Today's Message Index:
----------------------
1. 07:31 AM - Re: yak 52 fuel instrument (Rob Rowe)
2. 09:47 AM - spark plug gapping (new questions) (skidmk)
3. 10:46 AM - Re: spark plug gapping (new questions) (doug sapp)
4. 10:46 AM - Re: spark plug gapping (new questions) (A. Dennis Savarese)
5. 11:44 AM - Re: spark plug gapping (new questions) (skidmk)
6. 12:11 PM - Re: Re: spark plug gapping (new questions) (doug sapp)
7. 03:38 PM - YAK 18 T with vibration (SRGraham)
8. 05:03 PM - Re: spark plug gapping (new questions) (skidmk)
9. 05:38 PM - 18T fabrivc (Joe Howse)
10. 05:38 PM - Re: Re: yak 52 fuel instrument (Yak Pilot)
11. 05:50 PM - Re: YAK 18 T with vibration (Yak Pilot)
12. 05:55 PM - Re: Re: yak 52 fuel instrument (Stephen Morrey)
13. 06:50 PM - Re: Re: yak 52 fuel instrument (Yak Pilot)
14. 08:37 PM - Re: Re: spark plug gapping (new questions) (Walter Lannon)
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| Subject: | Re: yak 52 fuel instrument |
Mark,
I'll email you a later version of my schematic with the (2006) error corrected.
You may have read too much into my last post. I didn't say it was a progressive
binary sequence, just that there could be a unique logic combination per discrete
fuel level.
To that end I've created a logic state table (PDF attached - I'll email you a copy
too) that weights the secondary coils by their individual in/anti-phase winding
ratios.
By arbitrarily multiplying this logic weighted ratio by 50 to make the numbers
easier to interpret, the result is a close approximation of the fuel display readings
(within +/- 4% until
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245255#245255
Attachments:
http://forums.matronics.com//files/fuel_display_logic_table_147.pdf
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| Subject: | spark plug gapping (new questions) |
HI all,,
changed my plugs at the annual this year (chinese to chinese) and we now have
a vibration at high rpms.
In keeping with the previous discussion of vibration, I'd like to check the gaps.
I know the gap specs (from the book), but what massive electrode tool would I use
to fix them if they are out?
I've looked at ATS and aircraft spruce for a gapper, but they are all 18mm?
thanks
Mike
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245274#245274
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| Subject: | Re: spark plug gapping (new questions) |
Mike,In every can of Chinese DZ5 plugs there are 10 plugs, copper
gasket/seals and a gapping tool, this is a go/no go "feeler gauge" type
tool. No need to buy any special tools.
Always Yakin,
Doug
On Mon, May 25, 2009 at 9:40 AM, skidmk <skidmk@gmail.com> wrote:
>
> HI all,,
>
> changed my plugs at the annual this year (chinese to chinese) and we now
> have a vibration at high rpms.
>
> In keeping with the previous discussion of vibration, I'd like to check the
> gaps.
>
> I know the gap specs (from the book), but what massive electrode tool would
> I use to fix them if they are out?
>
> I've looked at ATS and aircraft spruce for a gapper, but they are all 18mm?
>
> thanks
>
> Mike
>
> --------
> Mike "Skidmk" Bourget
> Ottawa, Ontario
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=245274#245274
>
>
--
Always Yakin,
Doug Sapp
Phone 509-826-4610
Fax 509-826-3644
Message 4
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| Subject: | Re: spark plug gapping (new questions) |
I'm pretty sure if you buy 20 Chinese spark plugs from Doug, the sealed
container with the plugs has a neat little gapping tool in it. Check
with Doug to see if this gapping tool is available separately.
Dennis
----- Original Message -----
From: skidmk
To: yak-list@matronics.com
Sent: Monday, May 25, 2009 11:40 AM
Subject: Yak-List: spark plug gapping (new questions)
HI all,,
changed my plugs at the annual this year (chinese to chinese) and we
now have a vibration at high rpms.
In keeping with the previous discussion of vibration, I'd like to
check the gaps.
I know the gap specs (from the book), but what massive electrode tool
would I use to fix them if they are out?
I've looked at ATS and aircraft spruce for a gapper, but they are all
18mm?
thanks
Mike
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245274#245274
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| Subject: | Re: spark plug gapping (new questions) |
Hi guys,,
yes the go no go tool is there. I'm not terribly familiar with its use (used to
gappers), and as such didn't want to risk bending/breaking an electrode/other.
I understand the gap tool slides down next to the electrode to test the gap,and
it should be tight, but easily slide up and down. However if there are instances
where the gap is too tight, can the tool be used to bend the plug back?
M
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245296#245296
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| Subject: | Re: spark plug gapping (new questions) |
If it is too tight just tap it in and it will set the correct gap.
Doug
On Mon, May 25, 2009 at 11:38 AM, skidmk <skidmk@gmail.com> wrote:
>
> Hi guys,,
>
> yes the go no go tool is there. I'm not terribly familiar with its use
> (used to gappers), and as such didn't want to risk bending/breaking an
> electrode/other.
>
> I understand the gap tool slides down next to the electrode to test the
> gap,and it should be tight, but easily slide up and down. However if there
> are instances where the gap is too tight, can the tool be used to bend the
> plug back?
>
> M
>
> --------
> Mike "Skidmk" Bourget
> Ottawa, Ontario
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=245296#245296
>
>
--
Always Yakin,
Doug Sapp
Phone 509-826-4610
Fax 509-826-3644
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| Subject: | YAK 18 T with vibration |
My 18 I understand had similar problems, until Denis and his magic ignition
system was installed. At the risk of offending the gods, my 18 purrs under
all conditions, our temperatures get down to about -5 and up as far as 35
centigrade. She has never turned a hair under any circumstances, the colder
it is the better she likes it. I spend a lot of time flying over Bass
Strait, loads of open water and when not overwater climb over mountains. The
only place that is flat is where we land. I cannot recommend Dennis's system
enough and the automotive champion plugs are cheap as chips
Cheers SG
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Yak-List Digest
Server
Sent: Saturday, 23 May 2009 4:59 PM
Subject: Yak-List Digest: 12 Msgs - 05/22/09
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Total Messages Posted Fri 05/22/09: 12
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Today's Message Index:
----------------------
1. 04:25 AM - Re: Still looking for a snot valve - help (Scott
Poehlmann)
2. 06:23 AM - Re: Install a GARMIN GPS 296 in a YAK 52 cockpit ?
(LawnDart)
3. 09:17 AM - Re: Interference of GPS on Becker VHF (Bitterlich, Mark
G CIV Det Cherry Point, MALS-14 64E)
4. 09:41 AM - Re: Still looking for a snot valve - help (doug sapp)
5. 09:41 AM - Re: Engine or prop judder on 18 T (Bitterlich, Mark G
CIV Det Cherry Point, MALS-14 64E)
6. 09:42 AM - Re: Still looking for a snot valve - help (Herb
Coussons)
7. 11:12 AM - Re: Still looking for a snot valve - help (Herb
Coussons)
8. 11:17 AM - Re: Engine or prop judder on 18 T (Roger Kemp M.D.)
9. 01:34 PM - Re: Still looking for a snot valve - help (doug sapp)
10. 05:37 PM - Re: Still looking for a snot valve - help (Scott
Poehlmann)
11. 05:50 PM - Re: Overhauled M14P engines available (Joe Howse)
12. 07:40 PM - Re: Still looking for a snot valve - help (Herb
Coussons)
________________________________ Message 1
_____________________________________
Time: 04:25:03 AM PST US
From: Scott Poehlmann <scott-p@texas.net>
Subject: Re: Yak-List: Still looking for a snot valve - help
Hi Anthony,
Since the volume of the bottle (and the whole system, in fact) on the 55
is so low, many do not have separate snot valves. Mine for example only
has the valve on the bottom of the tank. I dutifully open it slightly
and drain out the gunk about once a week or so (and you don't need to
completely drain the system, though until you get used to doing it
quickly, be prepared to refill the air system), and at each annual I use
that valve to drain the entire system. It is also the lowest point in
the system, so that's where the gunk ends up.
Scott
Yak 55M wrote:
> Hi,
>
> I have finally secured almost everything I need to add a compressor to
> my Yak55M, but I am missing one more item - a snot valve. It seems
> this little item is difficult to get. Any lines on where I can get a
> snot valve would be greatly appreciated.
>
> Thanks in advance,
>
> Anthony.
>
> BTW, thanks for all of the advice in finding the sheer coupling and
> gauge, this list made it happen.
> *
>
>
> *
________________________________ Message 2
_____________________________________
Time: 06:23:06 AM PST US
Subject: Yak-List: Re: Install a GARMIN GPS 296 in a YAK 52 cockpit ?
From: "LawnDart" <propwash@gmail.com>
I use RAM mounts. They have one that will mount to the glare shield and
hold the
296. It is very sturdy and does not vibrate in flight.
Mount: RAM-B-177-GA7U
http://tinyurl.com/pyojro
I mounted mine in the center. Does cover up the artificial horizon when
mounted.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=244958#244958
________________________________ Message 3
_____________________________________
Time: 09:17:48 AM PST US
Subject: RE: Yak-List: Interference of GPS on Becker VHF
From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E"
<mark.bitterlich@navy.mil>
I am not sure whether I told you this or not Hans, so I might be repeating
myself.
If you put in the filters, make sure you GROUND the SHIELD on the original
P lead wire that will then connect to the new filter.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Hans Oortman
Sent: Thursday, May 21, 2009 3:44 AM
Subject: RE: Yak-List: Interference of GPS on Becker VHF
Mark,
Thanks for the suggestions. I am going to do those in the next few days. We
have
a few bank holidays any way so, time to fly.
I ordered the filters, just in case, it certainly won't hurt to install
these and
at the same time I can check the shielding at the P-lead.
I'll keep you updated!
Hans
Tel: +31 653 286022
________________________________
Van: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] Namens Yak Pilot
Verzonden: donderdag 21 mei 2009 5:37
Aan: yak-list@matronics.com
Onderwerp: Re: Yak-List: Interference of GPS on Becker VHF
Hans, this is a much better explanation. Try this. Next time you go fly,
leave
the power lead connected for the GPS, but if possible unplug the GPS itself
while leaving the power cord connected to the aircraft. Hopefully there is
a
disconnect plug at the GPS itself that would allow you to keep the GPS power
cord
connected with the actual GPS removed. Also tell me what happens if you
TURN
THE GPS OFF in flight! Does this impact the noise in the radio with the
engine
running? If NOT, then for some reason your GPS power cable is either
radiating
noise "somehow" or is picking noise up and putting it back into wiring
where it should not be.
While unusual, this kind of thing is not unknown.
I suggest replacing your GPS power wire with dual conductor SHIELDED wire
and make
sure the shield is connected to ground at the power connector side only.
Also, reducing RF noise from the Mags by using filters is never a bad idea.
Before
you do that, PLEASE check the P lead shields right at the MAG P LEAD
CONNECTOR
and make sure they are not twisted off! That happens ALL the time, and
you need to physically check this yourself. When you unscrew the P lead
connector
on the mag, be SURE to hold the center of it still as you rotate the knurled
knob or you will twist the shield right off.
Best Regards,
Mark Bitterlich
________________________________
From: Hans Oortman <pa3arw@euronet.nl>
Sent: Monday, May 18, 2009 5:12:12 AM
Subject: RE: Yak-List: Interference of GPS on Becker VHF
Mark,
Thanks for all the good advise/suggestions. I'll have a look at the
shieldings.
When you mentioned this, I went back in history and tried to recall when
this
phenoma started to occur. It is only since the last year and a half or so
that
this has become a real problem.
I don't fly a lot with gps but when I do, I need it, if you know what I
mean.
As far as I can recall it happened after a 100hrs check up (done by our
Lithuanian
mechanic). At the same time, almost 2 years ago, I used the opportunity to
install an additional power connector of the Lemo type. These Swiss
connectors
are the best you can find and have a lock facility build in rather than the
normal cigarette lighter connectors which are big and have as good as no
locking
facility. I use those Lemo's in my company for equipment we design/produce
for cable companies. To make sure that this power lead does not pick up RF,
I
installed a RF-choke just before the connector.
When the engine is not running I hear no interference on any channel on the
Becker
Radio. The GPS is connected to the YAK52's power and there are no problems
what so ever.
It is only after I start the engine that the problem occurs as long as I
have the
GPS connected to the planes power. When I disconnect the power lead (a long
curled cable) from the planes power the problem is gone. The AvMap IV does
have
a RF choke in its power lead.
I was under the impression that the problem was caused by the gps but it is
the
combination of the set up, i.e. engine, radio, gps, which causes this
problem,
not an individual piece of equipment..I think...and only when the engine is
running.
I'll check the shields of the p-leads on both mags. The tacho generator has
already
been checked and the shielding of that device is OK.
Installing these filters won't hurt any way, so I'll order them, just in
case.
Thanks for your help and advise!
Hans Oortman, MBA, Ph.D.
CEO
STN BV
________________________________
Van: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] Namens Yak Pilot
Verzonden: maandag 18 mei 2009 7:53
Aan: yak-list@matronics.com
Onderwerp: Re: Yak-List: Interference of GPS on Becker VHF
Let me clarify a little here. There is a shielded P lead wire. The center
conductor
is soldered to a little device that fits into the mag itself and makes
an internal connection to the mag coil. You push this into the mag P lead
hole
and THEN screw on the outer shell per se.
The shield for this wire is soldered to a wire CUP that fits into the screw
on
portion of the mag P lead connector AKA "The Shell". When you screw in the
P
lead connector onto the mag, or OFF of the mag, it is very easy to turn the
threaded
portion and ALSO turn the little piece that is soldered to the shield.
If you DO turn this little piece as you screw off the threaded portion of
the
P lead connector, you will also twist the shield, and in so-doing will cause
the shield to rip off from the connector. Thus the shield is no longer
connected
and there is no ground for it.
It is like MASSIVELY EASY to do this! EVERY SINGLE AIRCRAFT USING AN M-14
ENGINE
I HAVE EVER SEEN HAS AT LEAST SOME DAMAGE IN THIS AREA! Every single one.
This WILL cause radio noise. Every time. (Hans, your problem is likely
something
else)
The only way to avoid doing it is to "somehow" carefully hold that cup piece
that
sticks out the back of the threaded portion of the connector (the NUT per
se)
still as you turn the piece that screws off with your hand. I have a
special
tool made to do this. You can use needle nose pliers if you are careful.
But if you ignore this advice and take off a P lead connector... you have
VERY
HIGH ODDS of damaging the shield.
Rest assured, if you didn't know this, it is even money that your P lead
shields
are at the very minimum "damaged" if not completely broken.
Mark
________________________________
From: Yak Pilot <yakplt@yahoo.com>
Sent: Monday, May 18, 2009 12:47:56 AM
Subject: Re: Yak-List: Interference of GPS on Becker VHF
One of the most common sources of interference to radios is from the P
leads.
One of the most common causes for that is the loss of a ground for the
shield.
The way this happens is when you unscrew the P lead connector on the mag
itself,
you do not also hold the shield cup on the back of the P lead connector
still
as you unscrew the P lead connector itself. The result of this is that you
end up twisting the shield right off the connector.
When you do this, the shield is no longer grounded. If the shield is not
grounded,
it will radiate noise just like there was no shield there to begin with and
your radios will be filled with static and noise.
So, before you go out and install any kind of filters, ALWAYS make sure that
your
P LEAD shields are indeed correctly soldered and attached to the P lead
connector
itself.
If everything is ok in that department and you still have noise and decide
to try
a P lead filter, install it any way you choose, but make certain that when
you are done, the P lead shield itself still has a proper ground on it, if
not
at the P lead connector itself, then in some other manner as you see fit.
Do
not allow the P lead wire shield "float", and keep the amount of unshielded
P
lead wire as short as possible when installing a filter and keep the length
of
the wire from the P lead shield to ground as short as possible as well.
Another terrific source of noise is the Tach Gen, and if the shield on that
wire
bundle breaks, the noise can be so strong it will burn out the receiver on a
Balkan 5.
Mark Bitterlich
________________________________
From: Roger Kemp M.D. <viperdoc@mindspring.com>
Sent: Monday, May 18, 2009 11:10:52 AM
Subject: RE: Yak-List: Interference of GPS on Becker VHF
Two magneto filters are required.
Doc
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of A. Dennis Savarese
Sent: Sunday, May 17, 2009 8:26 AM
Subject: Re: Yak-List: Interference of GPS on Becker VHF
Yes, we installed both filters.
Dennis
----- Original Message -----
From: Hans Oortman <mailto:pa3arw@euronet.nl>
To: yak-list@matronics.com
Sent: Sunday, May 17, 2009 8:22 AM
Subject: RE: Yak-List: Interference of GPS on Becker VHF
Dennis,
Did you install the in-line filter as well as the magneto filter??
Hans
________________________________
Van: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] Namens A. Dennis Savarese
Verzonden: zondag 17 mei 2009 15:03
Aan: yak-list@matronics.com
Onderwerp: Re: Yak-List: Interference of GPS on Becker VHF
We recently had a problem with Doc's Yak 50 with noise on the Becker
VHF. First we installed a nice inline filter on the DC buss;
http://www.lonestaraviation.com/product_details.asp?Product_Name=The%20Elimi
nator. It removed much of the noise, but not all. Then we installed the
magneto filters directly on the P leads going into the magnetos.
http://www.lonestaraviation.com/product_details.asp?Product_Name=Magneto%20F
ilter. Bingo.....noise eliminated. I mounted the ground strap to the studs
on the accessory case back plate.
Dennis
----- Original Message -----
From: Hans Oortman <mailto:pa3arw@euronet.nl>
To: yak-list@matronics.com
Sent: Sunday, May 17, 2009 7:42 AM
Subject: Yak-List: Interference of GPS on Becker VHF
Guys,
May be some of you on the yak net has some idea how to
resolve the following
problem. Mark any suggestions??
I own a Avmap IV GPS, great tool but it is getting a
nuisance in the 52.
The following happens: when on the ground GPS switched on,
VHF on, engine NOT
running, no interference on VHF at all!
when on the ground GPS
switched on, VHF on,
engine running (or in the air for that matter), huge interference on VHF, S5
to 6 noise level, i.e. very difficult comms. When switching over on battery
(i.e.
pulling the plug out...) the problem is as good as gone.
Has any body had this experience also and what have you done
about it? I am
thinking on a LPF or a separate DC-DC convertor for the AvMap GPS.
In principle the AvMap swallows any voltage between 10 and
36v. I assume that
the 28v generator is not producing a nice DC which causes something to start
generating a noise, in my case the GPS but I do not have an explanation for
that
at all....
Any help is appreciated!
Hans
RA3326K / EHSE
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________________________________ Message 4
_____________________________________
Time: 09:41:40 AM PST US
Subject: Re: Yak-List: Still looking for a snot valve - help
From: doug sapp <dougsappllc@gmail.com>
As always your mileage may vary but the thought of a rusted or corroded air
bottle exploding in a aircraft really chills my crap!, in my mind it is
simply is not worth the chance. Add to this the fact that your pushing all
the moisture and gunk into your expensive start valve and check valves which
is just not a good deal even if you have replaced all the springs with
stainless steel. IMHO the added cost of a snot valve AND a dessicant filter
will save you a bunch of money and trouble down the road.
Always Yakin,
Doug
On Fri, May 22, 2009 at 4:23 AM, Scott Poehlmann <scott-p@texas.net> wrote:
>
> Hi Anthony,
>
> Since the volume of the bottle (and the whole system, in fact) on the 55
is
> so low, many do not have separate snot valves. Mine for example only has
the
> valve on the bottom of the tank. I dutifully open it slightly and drain
out
> the gunk about once a week or so (and you don't need to completely drain
the
> system, though until you get used to doing it quickly, be prepared to
refill
> the air system), and at each annual I use that valve to drain the entire
> system. It is also the lowest point in the system, so that's where the
gunk
> ends up.
>
> Scott
>
>
> Yak 55M wrote:
>
>> Hi,
>>
>> I have finally secured almost everything I need to add a compressor to my
>> Yak55M, but I am missing one more item - a snot valve. It seems this
little
>> item is difficult to get. Any lines on where I can get a snot valve
would
>> be greatly appreciated.
>>
>> Thanks in advance,
>>
>> Anthony.
>>
>> BTW, thanks for all of the advice in finding the sheer coupling and
gauge,
>> this list made it happen.
>> *
>>
>>
>> *
>>
>
>
--
Always Yakin,
Doug Sapp
Phone 509-826-4610
Fax 509-826-3644
________________________________ Message 5
_____________________________________
Time: 09:41:43 AM PST US
Subject: RE: Yak-List: Engine or prop judder on 18 T
From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E"
<mark.bitterlich@navy.mil>
This might sound especially stupid and I hesitate to even mention it,
but.....
I recently had a very interesting problem in my YAK-50. Along with it
becoming
very difficult to start when hot, it also developed a very noticeable shake
at high speeds. Pretty much exactly as you described which is why I am
about
to go out on a limb and just mention what happened to me.
Anyway, after a full year of problems with the M-14 not wanting to start
when hot,
and after replacing every single piece of the starter ignition system, the
only thing left was the spark plugs. I am using automotive plugs via
Dennis's
kit, which by the way is the best thing since sliced bread.
So, I replaced the plugs. The starting problem went away and all is now
well.
I really had a hard time believing it was the plugs. Still do in fact, but
the
fact is.... The problem is GONE!
ANYWAY ~ Funny thing. The high speed vibration went away too. Mag checks
during
all of this were always good. No indication of plug problems at all. Upon
inspection, found that the plug gap was set too wide ... My fault for not
double
checking the A&P that was helping me put in the kit way back when. The
plugs
were at .032 or so. Dennis recommends .025 I have talked to other folks
who claim .018 is about right, and that wider than .018 can cause "starting
problems".
I have mine now gapped at .025 per Dennis's recommendation and everything
is working perfectly, so I will avoid .018, but it is worth keeping in
the back of your head.
Anyway... To get to the point... It's a real long shot, but you might have a
spark
plug problem, or some other sort of ignition problem, especially if you are
using the original ignition wiring and ring.
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Vic
Sent: Tuesday, May 19, 2009 5:26 PM
Subject: Yak-List: Engine or prop judder on 18 T
Hello everybody,
our 18 T has developed an engine or prop judder since last year that can be
noticed
mainly in high speed low passes at , say, 70 % engine speed and over 250
kph . We replaced all engine mounting rubbers, did a dynamic prop balancing
on
the ground with up to 90 % engine speed and the engine felt real smooth. But
in the air at high speed dives the shaking of the engine/prop was still
there
- at a very reduced rate, but still noticeable . The setting of the blades
was
checked and seemed to be allright in the dynamic balancing . Could we have a
problem with the prop hub in case the prop goes to fully coarse in the dive
and
the blade angles in this condition might be different for each blade ? We
suspect
some sort of backlash in the hub different for each side ? Has anybody an
idea on that one ? Or could it be an aerodynamic effect specific for the 18
T ? We will dig deeper next weekend but any ideas would be appreciated.
Regards
Helga and Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=244696#244696
________________________________ Message 6
_____________________________________
Time: 09:42:52 AM PST US
From: Herb Coussons <drc@wscare.com>
Subject: Re: Yak-List: Still looking for a snot valve - help
Exact same for me, the low point drain for the bottom of the air tank
is mounted just on the Left of the oil cooler doghouse. Although it
would be nice to have a separate valve to relaesa without dumping the
air.
Herb
On May 22, 2009, at 6:23 AM, Scott Poehlmann wrote:
>
> Hi Anthony,
>
> Since the volume of the bottle (and the whole system, in fact) on
> the 55 is so low, many do not have separate snot valves. Mine for
> example only has the valve on the bottom of the tank. I dutifully
> open it slightly and drain out the gunk about once a week or so (and
> you don't need to completely drain the system, though until you get
> used to doing it quickly, be prepared to refill the air system), and
> at each annual I use that valve to drain the entire system. It is
> also the lowest point in the system, so that's where the gunk ends up.
>
> Scott
>
> Yak 55M wrote:
>> Hi,
>>
>> I have finally secured almost everything I need to add a compressor
>> to my Yak55M, but I am missing one more item - a snot valve. It
>> seems this little item is difficult to get. Any lines on where I
>> can get a snot valve would be greatly appreciated.
>>
>> Thanks in advance,
>>
>> Anthony.
>>
>> BTW, thanks for all of the advice in finding the sheer coupling and
>> gauge, this list made it happen.
>> *
>>
>>
>> *
>
>
________________________________ Message 7
_____________________________________
Time: 11:12:04 AM PST US
From: Herb Coussons <drc@wscare.com>
Subject: Re: Yak-List: Still looking for a snot valve - help
Doug,
If you are familiar with the yak 55 system (maybe they are all unique
as they are each a retrofit), please describe the plumbing to add the
snot valve.
Has any body thought of adding a valve like the Wilga. My Yak 52 TW
has the pull handle is in the cockpit to release the valve. On the
Wilga it was up front behind the right cowl cheek - a screw type valve
that released right there. Which of these types is more like the CJ
or standard Yak?
I would think the Wilga type would be the easiest to plumb for the 55
since the whole air system is in front of the firewall except the fill
port and guage.
Thanks,
Herb
On May 22, 2009, at 11:29 AM, doug sapp wrote:
> As always your mileage may vary but the thought of a rusted or
> corroded air bottle exploding in a aircraft really chills my crap!,
> in my mind it is simply is not worth the chance. Add to this the
> fact that your pushing all the moisture and gunk into your expensive
> start valve and check valves which is just not a good deal even if
> you have replaced all the springs with stainless steel. IMHO the
> added cost of a snot valve AND a dessicant filter will save you a
> bunch of money and trouble down the road.
>
> Always Yakin,
> Doug
>
> On Fri, May 22, 2009 at 4:23 AM, Scott Poehlmann <scott-p@texas.net>
> wrote:
>
> Hi Anthony,
>
> Since the volume of the bottle (and the whole system, in fact) on
> the 55 is so low, many do not have separate snot valves. Mine for
> example only has the valve on the bottom of the tank. I dutifully
> open it slightly and drain out the gunk about once a week or so (and
> you don't need to completely drain the system, though until you get
> used to doing it quickly, be prepared to refill the air system), and
> at each annual I use that valve to drain the entire system. It is
> also the lowest point in the system, so that's where the gunk ends up.
>
> Scott
>
>
> Yak 55M wrote:
> Hi,
>
> I have finally secured almost everything I need to add a compressor
> to my Yak55M, but I am missing one more item - a snot valve. It
> seems this little item is difficult to get. Any lines on where I
> can get a snot valve would be greatly appreciated.
>
> Thanks in advance,
>
> Anthony.
>
> BTW, thanks for all of the advice in finding the sheer coupling and
> gauge, this list made it happen.
> *
>
>
> *
>
> =========
> rget="_blank">http://www.matronics.com/Navigator?Yak-List
> =========
> http://forums.matronics.com
> =========
> le, List Admin.
> ="_blank">http://www.matronics.com/contribution
> =========
>
>
> --
> Always Yakin,
> Doug Sapp
> Phone 509-826-4610
> Fax 509-826-3644
>
>
________________________________ Message 8
_____________________________________
Time: 11:17:24 AM PST US
From: "Roger Kemp M.D." <viperdoc@mindspring.com>
Subject: RE: Yak-List: Engine or prop judder on 18 T
A glow plug. Quite possible...did not think of that one. The exact way a
diesel engine or R/C model airplane engine runs...well used to before
turbines and 4 stroke chainsaw engines were introduced the modeling
communities.
Doc
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G
CIV Det Cherry Point, MALS-14 64E
Sent: Friday, May 22, 2009 11:30 AM
Subject: RE: Yak-List: Engine or prop judder on 18 T
This might sound especially stupid and I hesitate to even mention it,
but..... I recently had a very interesting problem in my YAK-50. Along
with it becoming very difficult to start when hot, it also developed a very
noticeable shake at high speeds. Pretty much exactly as you described which
is why I am about to go out on a limb and just mention what happened to me.
Anyway, after a full year of problems with the M-14 not wanting to start
when hot, and after replacing every single piece of the starter ignition
system, the only thing left was the spark plugs. I am using automotive
plugs via Dennis's kit, which by the way is the best thing since sliced
bread.
So, I replaced the plugs. The starting problem went away and all is now
well. I really had a hard time believing it was the plugs. Still do in
fact, but the fact is.... The problem is GONE!
ANYWAY ~ Funny thing. The high speed vibration went away too. Mag checks
during all of this were always good. No indication of plug problems at all.
Upon inspection, found that the plug gap was set too wide ... My fault for
not double checking the A&P that was helping me put in the kit way back
when. The plugs were at .032 or so. Dennis recommends .025 I have talked
to other folks who claim .018 is about right, and that wider than .018 can
cause "starting problems". I have mine now gapped at .025 per Dennis's
recommendation and everything is working perfectly, so I will avoid .018,
but it is worth keeping in the back of your head.
Anyway... To get to the point... It's a real long shot, but you might have a
spark plug problem, or some other sort of ignition problem, especially if
you are using the original ignition wiring and ring.
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Vic
Sent: Tuesday, May 19, 2009 5:26 PM
Subject: Yak-List: Engine or prop judder on 18 T
Hello everybody,
our 18 T has developed an engine or prop judder since last year that can be
noticed mainly in high speed low passes at , say, 70 % engine speed and over
250 kph . We replaced all engine mounting rubbers, did a dynamic prop
balancing on the ground with up to 90 % engine speed and the engine felt
real smooth. But in the air at high speed dives the shaking of the
engine/prop was still there - at a very reduced rate, but still noticeable .
The setting of the blades was checked and seemed to be allright in the
dynamic balancing . Could we have a problem with the prop hub in case the
prop goes to fully coarse in the dive and the blade angles in this condition
might be different for each blade ? We suspect some sort of backlash in the
hub different for each side ? Has anybody an idea on that one ? Or could it
be an aerodynamic effect specific for the 18 T ? We will dig deeper next
weekend but any ideas would be appreciated.
Regards
Helga and Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=244696#244696
________________________________ Message 9
_____________________________________
Time: 01:34:43 PM PST US
Subject: Re: Yak-List: Still looking for a snot valve - help
From: doug sapp <dougsappllc@gmail.com>
Herb,Am really not sure of the plumbing on the 55 or the 52 for that matter.
From your description the Wilga snot valve sounds like the one used on a CJ
wherein you reach inside the cowl and turn the knob/wheel and depending on
which way the wind is blowing it blows crap all over your right leg or foot.
To add a snot valve to any system is not difficult and I have the valves
and most if not all the fitting here in my stock. Give me a call if I can
be of help. 509-826-4610
I will be at Red Star 24th--the 1st.
Always Yakin,
Doug
On Fri, May 22, 2009 at 11:09 AM, Herb Coussons <drc@wscare.com> wrote:
> Doug,If you are familiar with the yak 55 system (maybe they are all unique
> as they are each a retrofit), please describe the plumbing to add the
snot
> valve.
> Has any body thought of adding a valve like the Wilga. My Yak 52 TW has
> the pull handle is in the cockpit to release the valve. On the Wilga it
was
> up front behind the right cowl cheek - a screw type valve that released
> right there. Which of these types is more like the CJ or standard Yak?
>
> I would think the Wilga type would be the easiest to plumb for the 55
since
> the whole air system is in front of the firewall except the fill port and
> guage.
>
>
> Thanks,
>
> Herb
>
>
> On May 22, 2009, at 11:29 AM, doug sapp wrote:
>
> As always your mileage may vary but the thought of a rusted or corroded
air
> bottle exploding in a aircraft really chills my crap!, in my mind it is
> simply is not worth the chance. Add to this the fact that your pushing
all
> the moisture and gunk into your expensive start valve and check valves
which
> is just not a good deal even if you have replaced all the springs with
> stainless steel. IMHO the added cost of a snot valve AND a dessicant
filter
> will save you a bunch of money and trouble down the road.
> Always Yakin,
> Doug
>
> On Fri, May 22, 2009 at 4:23 AM, Scott Poehlmann <scott-p@texas.net>wrote:
>
>>
>> Hi Anthony,
>>
>> Since the volume of the bottle (and the whole system, in fact) on the 55
>> is so low, many do not have separate snot valves. Mine for example only
has
>> the valve on the bottom of the tank. I dutifully open it slightly and
drain
>> out the gunk about once a week or so (and you don't need to completely
drain
>> the system, though until you get used to doing it quickly, be prepared to
>> refill the air system), and at each annual I use that valve to drain the
>> entire system. It is also the lowest point in the system, so that's where
>> the gunk ends up.
>>
>> Scott
>>
>>
>> Yak 55M wrote:
>>
>>> Hi,
>>>
>>> I have finally secured almost everything I need to add a compressor to
my
>>> Yak55M, but I am missing one more item - a snot valve. It seems this
little
>>> item is difficult to get. Any lines on where I can get a snot valve
would
>>> be greatly appreciated.
>>>
>>> Thanks in advance,
>>>
>>> Anthony.
>>>
>>> BTW, thanks for all of the advice in finding the sheer coupling and
>>> gauge, this list made it happen.
>>> *
>>>
>>>
>>> *
>>>
>>
>> =========
>> rget="_blank">http://www.matronics.com/Navigator?Yak-List
>> =========
>> http://forums.matronics.com
>> =========
>> le, List Admin.
>> ="_blank">http://www.matronics.com/contribution
>> =========
>>
>>
>>
>>
>
>
> --
> Always Yakin,
> Doug Sapp
> Phone 509-826-4610
> Fax 509-826-3644
>
>
*href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com
/Navigator?Yak-List
> href="http://forums.matronics.com">http://forums.matronics.com
>
href="http://www.matronics.com/contribution">http://www.matronics.com/contri
bution
> *
>
>
> *
>
>
--
Always Yakin,
Doug Sapp
Phone 509-826-4610
Fax 509-826-3644
________________________________ Message 10
____________________________________
Time: 05:37:41 PM PST US
From: Scott Poehlmann <scott-p@texas.net>
Subject: Re: Yak-List: Still looking for a snot valve - help
Hi Dennis,
I agree with your concern, but the system in a most 55's is different
than that in the 52 (or even the 50). First off, I (and most others)
have an overboard dump line--99% of the time the compressor is pumping
air overboard and NOT through the system, thus most of the time the
system is sealed. I dutifully check for "snot" but essentially NEVER get
anything out. Second, the system ONLY operates the starter--thus the
lines are short and relatively straight--in fact my entire air system is
on the engine side of the firewall except for the line to the cockpit
pressure guage. Third, I at least have my tank visually inspected every
other annual or so, so I know it isn't corroded (as a gynecologist, I
find it fascinating that the exact same instrument I call a "diagnostic
hysteroscope" and which costs over $15,000 can be had by an A&P for <
$500 when it is called a "flexible boroscope"... but that's another
discussion...). Given these things, I don't think that using the tank
bottom drain valve as the snot valve is unreasonable--adding such a
valve would just give me another point from which the system could leak.
But the concern about corrosion is very real--just one look at the 52
from England that had the bottle explode is enough to convince me!
Best,
Scott
doug sapp wrote:
> As always your mileage may vary but the thought of a rusted or
> corroded air bottle exploding in a aircraft really chills my crap!, in
> my mind it is simply is not worth the chance. Add to this the fact
> that your pushing all the moisture and gunk into your expensive start
> valve and check valves which is just not a good deal even if you have
> replaced all the springs with stainless steel. IMHO the added cost of
> a snot valve AND a dessicant filter will save you a bunch of money and
> trouble down the road.
>
> Always Yakin,
> Doug
>
> On Fri, May 22, 2009 at 4:23 AM, Scott Poehlmann <scott-p@texas.net
> <mailto:scott-p@texas.net>> wrote:
>
> <mailto:scott-p@texas.net>>
>
> Hi Anthony,
>
> Since the volume of the bottle (and the whole system, in fact) on
> the 55 is so low, many do not have separate snot valves. Mine for
> example only has the valve on the bottom of the tank. I dutifully
> open it slightly and drain out the gunk about once a week or so
> (and you don't need to completely drain the system, though until
> you get used to doing it quickly, be prepared to refill the air
> system), and at each annual I use that valve to drain the entire
> system. It is also the lowest point in the system, so that's where
> the gunk ends up.
>
> Scott
>
>
> Yak 55M wrote:
>
> Hi,
>
> I have finally secured almost everything I need to add a
> compressor to my Yak55M, but I am missing one more item - a
> snot valve. It seems this little item is difficult to get.
> Any lines on where I can get a snot valve would be greatly
> appreciated.
>
> Thanks in advance,
>
> Anthony.
>
> BTW, thanks for all of the advice in finding the sheer
> coupling and gauge, this list made it happen.
> *
>
>
> *
>
>
> =========
> rget="_blank">http://www.matronics.com/Navigator?Yak-List
> =========
> http://forums.matronics.com
> =========
> le, List Admin.
> ="_blank">http://www.matronics.com/contribution
> =========
>
>
> --
> Always Yakin,
> Doug Sapp
> Phone 509-826-4610
> Fax 509-826-3644
> *
>
>
> *
________________________________ Message 11
____________________________________
Time: 05:50:33 PM PST US
From: "Joe Howse" <joeh@shaw.ca>
Subject: Re: Yak-List: Overhauled M14P engines available
Denni
How much?
Joe
----- Original Message -----
From: A. Dennis Savarese
To: yak-list@matronics.com ; m14pengines-list@matronics.com
Sent: Tuesday, May 19, 2009 5:50 AM
Subject: Yak-List: Overhauled M14P engines available
If anyone is interested in an overhauled M14P engine with prop flange
for V530 or MTV 9 propeller, overhauled by SC Motorstar in 2008 with
overhaul paperwork, please contact me off-list. I have 3 engines
available. They are here in the US and presently stored in a climate
controlled storage facility in Alabama.
I will be happy to discuss a serviceable core exchange with you as
well.
Dennis
________________________________ Message 12
____________________________________
Time: 07:40:39 PM PST US
From: Herb Coussons <drc@wscare.com>
Subject: Re: Yak-List: Still looking for a snot valve - help
Are you kidding - a gynecologist?
Me too! And I actually have used a flexible hysteroscope on an
airplane.
I have the same experience with the 55, I get hardly any return when I
use the valve connected to the bottom of the tank. Whereas the CJ
description that Doug gave, turning the knob behind the cowl on the
Wilga dumped the biggest mess you can imagine.
Herb Coussons
On May 22, 2009, at 7:35 PM, Scott Poehlmann wrote:
>
> Hi Dennis,
>
> I agree with your concern, but the system in a most 55's is
> different than that in the 52 (or even the 50). First off, I (and
> most others) have an overboard dump line--99% of the time the
> compressor is pumping air overboard and NOT through the system, thus
> most of the time the system is sealed. I dutifully check for "snot"
> but essentially NEVER get anything out. Second, the system ONLY
> operates the starter--thus the lines are short and relatively
> straight--in fact my entire air system is on the engine side of the
> firewall except for the line to the cockpit pressure guage. Third, I
> at least have my tank visually inspected every other annual or so,
> so I know it isn't corroded (as a gynecologist, I find it
> fascinating that the exact same instrument I call a "diagnostic
> hysteroscope" and which costs over $15,000 can be had by an A&P for
> < $500 when it is called a "flexible boroscope"... but that's
> another discussion...). Given these things, I don't think that using
> the tank bottom drain valve as the snot valve is unreasonable--
> adding such a valve would just give me another point from which the
> system could leak. But the concern about corrosion is very real--
> just one look at the 52 from England that had the bottle explode is
> enough to convince me!
>
> Best,
>
> Scott
>
> doug sapp wrote:
>> As always your mileage may vary but the thought of a rusted or
>> corroded air bottle exploding in a aircraft really chills my crap!,
>> in my mind it is simply is not worth the chance. Add to this the
>> fact that your pushing all the moisture and gunk into your
>> expensive start valve and check valves which is just not a good
>> deal even if you have replaced all the springs with stainless
>> steel. IMHO the added cost of a snot valve AND a dessicant filter
>> will save you a bunch of money and trouble down the road.
>> Always Yakin,
>> Doug
>>
>> On Fri, May 22, 2009 at 4:23 AM, Scott Poehlmann <scott-p@texas.net
>> <mailto:scott-p@texas.net>> wrote:
>>
>> <mailto:scott-p@texas.net>>
>>
>> Hi Anthony,
>>
>> Since the volume of the bottle (and the whole system, in fact) on
>> the 55 is so low, many do not have separate snot valves. Mine for
>> example only has the valve on the bottom of the tank. I dutifully
>> open it slightly and drain out the gunk about once a week or so
>> (and you don't need to completely drain the system, though until
>> you get used to doing it quickly, be prepared to refill the air
>> system), and at each annual I use that valve to drain the entire
>> system. It is also the lowest point in the system, so that's where
>> the gunk ends up.
>>
>> Scott
>>
>>
>> Yak 55M wrote:
>>
>> Hi,
>>
>> I have finally secured almost everything I need to add a
>> compressor to my Yak55M, but I am missing one more item - a
>> snot valve. It seems this little item is difficult to get.
>> Any lines on where I can get a snot valve would be greatly
>> appreciated.
>>
>> Thanks in advance,
>>
>> Anthony.
>>
>> BTW, thanks for all of the advice in finding the sheer
>> coupling and gauge, this list made it happen.
>> *
>>
>>
>> *
>>
>>
>> =========
>> rget="_blank">http://www.matronics.com/Navigator?Yak-List
>> =========
>> http://forums.matronics.com
>> =========
>> le, List Admin.
>> ="_blank">http://www.matronics.com/contribution
>> =========
>>
>>
>>
>>
>>
>>
>> --
>> Always Yakin,
>> Doug Sapp
>> Phone 509-826-4610
>> Fax 509-826-3644
>> *
>>
>>
>> *
>
>
Checked by AVG - www.avg.com
18:14:00
Message 8
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| Subject: | Re: spark plug gapping (new questions) |
yep did that, what if its too loose?
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245328#245328
Message 9
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|
I am refabricing our 18T and found a strange thing on the ailerons,
looks like a 2.5 inch leathet pad cemented over the leading edge skins
at a gap midway between the hangewr bearings., both left and
right.ailerons.
Anyone seen this before or know the purpose?
Joe
Message 10
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| Subject: | Re: yak 52 fuel instrument |
For anyone following this string.. =0A=C2-=0AI=99ve looked
at Rob=99s diagrams and schematics and think that he is absolutely o
n the right sheet of music on how this system works.=C2- I thought it was
all phase related (I.E. Analog in nature) =C2-and not any kind of binary
counter, in sequence or otherwise.=C2-=C2- After looking at Rob
=99s work I have to conclude that I am totally wrong with my assumptions an
d Rob=99s theory of operation is exactly right.=C2- Nice work Rob.
=C2- Really first class. =0A=C2-=0AMark Bitterlich=0A=0A=0A=0A=0A______
__________________________=0AFrom: Rob Rowe <yak-list@robrowe.plus.com>=0AT
o: yak-list@matronics.com=0ASent: Monday, May 25, 2009 10:30:32 AM=0ASubjec
t: Yak-List: Re: yak 52 fuel instrument=0A=0A--> Yak-List message posted by
: "Rob Rowe" <yak-list@robrowe.plus.com>=0A=0AMark,=0A=0AI'll email you a l
ater version of my schematic with the (2006) error corrected.=0A=0AYou may
have read too much into my last post. I didn't say it was a progressive bin
ary sequence, just that there could be a unique logic combination per discr
ete fuel level.=0A=0ATo that end I've created a logic state table (PDF atta
ched - I'll email you a copy too) that weights the secondary coils by their
individual in/anti-phase winding ratios. =0A=0ABy arbitrarily multiplying
this logic weighted ratio by 50 to make the numbers easier to interpret, th
e result is a close approximation of the fuel display readings (within +/-
4% until =0A=0A=0A=0A=0ARead this topic online here:=0A=0Ahttp://forums.mat
ronics.com/viewtopic.php?p=245255#245255=0A=0A=0A=0A=0AAttachments: =0A
=0Ahttp://forums.matronics.com//files/fuel_display_logic_table_147.pdf=0A
=
Message 11
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| Subject: | Re: YAK 18 T with vibration |
I have put Dennis Savarese's automotive plug and ignition wire kit in not o
nly my own aircraft but have worked with and helped install it in 5 other M
-14 equipped aircraft, some of them highly modified airshow engines.- The
list of well known names that use it is off the chart.- IAC Unlimited co
mpetitors, Airshow pilots, and just "good ole boys".- It is without a sha
dow of a doubt the very best modification I have ever seen made on this eng
ine, using price for performance as the determining factor.- I went for y
ears and failed to put it on my own aircraft because I never "got a round-2
-it".- Stupid.- Once I put it in I cursed myself for not doing it soone
r.- What more can anyone say?- Failing to take the time to put this kit
in is a mistake.- It is the BEST $400 or so dollars that I have ever spe
nt on my aircraft.- Period. =0A=0AMark Bitterlich=0A=0A-=0A=0A=0A=0A___
_____________________________=0AFrom: SRGraham <sgyak18t@bigpond.com>=0ATo:
yak-list@matronics.com=0ASent: Monday, May 25, 2009 6:37:36 PM=0ASubject:
raham" <sgyak18t@bigpond.com>=0A=0AMy 18 I understand had similar problems,
until Denis and his magic ignition=0Asystem was installed. At the risk of
offending the gods, my 18 purrs under=0Aall conditions, our temperatures ge
t down to about -5 and up as far as 35=0Acentigrade. She has never turned a
hair under any circumstances, the colder=0Ait is the better she likes it.
I spend a lot of time flying over Bass=0AStrait, loads of open water and wh
en not overwater climb over mountains. The=0Aonly place that is flat is whe
re we land. I cannot recommend Dennis's system=0Aenough and the automotive
champion plugs are cheap as chips=0A=0ACheers SG=0A=0A-----Original Message
-----=0AFrom: owner-yak-list-server@matronics.com=0A[mailto:owner-yak-list-
server@matronics.com] On Behalf Of Yak-List Digest=0AServer=0ASent: Saturda
y, 23 May 2009 4:59 PM=0ATo: Yak-List Digest List=0ASubject: Yak-List Diges
t: 12 Msgs - 05/22/09=0A=0A*=0A=0A=============
=============0A- Online Versions of Today's List
Digest Archive=0A===================
=======0A=0AToday's complete Yak-List Digest can also be found
in either of the =0Atwo Web Links listed below.- The .html file includes
the Digest formatted =0Ain HTML for viewing with a web browser and features
Hyperlinked Indexes =0Aand Message Navigation.- The .txt file includes t
he plain ASCII version =0Aof the Yak-List Digest and can be viewed with a g
eneric text editor =0Asuch as Notepad or with a web browser. =0A=0AHTML Ver
sion:=0A=0A=0Ahttp://www.matronics.com/digest/digestview.php?Style=82701&
View=html&Chapter=0A 09-05-22&Archive=Yak=0A=0AText Version:=0A=0A
=0Ahttp://www.matronics.com/digest/digestview.php?Style=82701&View=txt&
Chapter==0A2009-05-22&Archive=Yak=0A=0A=0A=========
===============0A- EMail Version of Today's L
ist Digest Archive=0A==================
======0A=0A=0A- - - - - -------------------------------
---------------------------=0A- - - - - - - - - - -
- - Yak-List Digest Archive=0A- - - - - - - - - -
- - - - - - - - - ---=0A- - - - - - - -
- - Total Messages Posted Fri 05/22/09: 12=0A- - - - - ------
----------------------------------------------------=0A=0A=0AToday's Messag
e Index:=0A----------------------=0A=0A- - 1. 04:25 AM - Re: Still look
ing for a snot valve - help- (Scott=0APoehlmann)=0A- - 2. 06:23 AM -
Re: Install a GARMIN GPS 296 in a YAK 52 cockpit ?=0A(LawnDart)=0A- - 3
. 09:17 AM - Re: Interference of GPS on Becker VHF- (Bitterlich, Mark=0AG
CIV Det Cherry Point, MALS-14 64E)=0A- - 4. 09:41 AM - Re: Still looki
ng for a snot valve - help- (doug sapp)=0A- - 5. 09:41 AM - Re: Engin
e or prop judder on 18 T- (Bitterlich, Mark G=0ACIV Det Cherry Point, MAL
S-14 64E)=0A- - 6. 09:42 AM - Re: Still looking for a snot valve - help
- (Herb=0ACoussons)=0A- - 7. 11:12 AM - Re: Still looking for a snot
valve - help- (Herb=0ACoussons)=0A- - 8. 11:17 AM - Re: Engine or pro
p judder on 18 T- (Roger Kemp M.D.)=0A- - 9. 01:34 PM - Re: Still loo
king for a snot valve - help- (doug sapp)=0A- - 10. 05:37 PM - Re: St
ill looking for a snot valve - help- (Scott=0APoehlmann)=0A- - 11. 05
:50 PM - Re: Overhauled M14P engines available- (Joe Howse)=0A- - 12.
07:40 PM - Re: Still looking for a snot valve - help- (Herb=0ACoussons)
=0A=0A=0A=0A________________________________- Message 1=0A_______________
______________________=0A=0A=0ATime: 04:25:03 AM PST US=0AFrom: Scott Poehl
mann <scott-p@texas.net>=0ASubject: Re: Yak-List: Still looking for a snot
valve - help=0A=0A=0AHi Anthony,=0A=0ASince the volume of the bottle (and t
he whole system, in fact) on the 55 =0Ais so low, many do not have separate
snot valves. Mine for example only =0Ahas the valve on the bottom of the t
ank. I dutifully open it slightly =0Aand drain out the gunk about once a we
ek or so (and you don't need to =0Acompletely drain the system, though unti
l you get used to doing it =0Aquickly, be prepared to refill the air system
), and at each annual I use =0Athat valve to drain the entire system. It is
also the lowest point in =0Athe system, so that's where the gunk ends up.
=0A=0AScott=0A=0AYak 55M wrote:=0A> Hi,=0A>=0A> I have finally secured almo
st everything I need to add a compressor to =0A> my Yak55M, but I am missin
g one more item - a snot valve.- It seems =0A> this little item is diffic
ult to get.- Any lines on where I can get a =0A> snot valve would be grea
tly appreciated.=0A>=0A> Thanks in advance,=0A>=0A> Anthony.=0A>=0A> BTW, t
hanks for all of the advice in finding the sheer coupling and =0A> gauge, t
his list made it happen.=0A> *=0A>=0A>=0A> *=0A=0A=0A______________________
__________- Message 2=0A_____________________________________=0A=0A=0ATim
e: 06:23:06 AM PST US=0ASubject: Yak-List: Re: Install a GARMIN GPS 296 in
a YAK 52 cockpit ?=0AFrom: "LawnDart" <propwash@gmail.com>=0A=0A=0AI use RA
M mounts.- They have one that will mount to the glare shield and=0Ahold t
he=0A296.- It is very sturdy and does not vibrate in flight.=0AMount: RAM
-B-177-GA7U=0Ahttp://tinyurl.com/pyojro=0A=0AI mounted mine in the center.
- Does cover up the artificial horizon when=0Amounted.=0A=0A=0ARead this
topic online here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=24495
8#244958=0A=0A=0A________________________________- Message 3=0A__________
___________________________=0A=0A=0ATime: 09:17:48 AM PST US=0ASubject: RE:
Yak-List: Interference of GPS on Becker VHF=0AFrom: "Bitterlich, Mark G CI
V Det Cherry Point, MALS-14 64E"=0A<mark.bitterlich@navy.mil>=0A=0AI am not
sure whether I told you this or not Hans, so I might be repeating=0Amyself
.=0AIf you put in the filters, make sure you GROUND the SHIELD on the origi
nal=0AP lead wire that will then connect to the new filter. =0A=0AMark=0A
=0A=0A-----Original Message-----=0AFrom: owner-yak-list-server@matronics.co
m=0A[mailto:owner-yak-list-server@matronics.com] On Behalf Of Hans Oortman
=0ASent: Thursday, May 21, 2009 3:44 AM=0ASubject: RE: Yak-List: Interferen
ce of GPS on Becker VHF=0A=0AMark,=0A=0AThanks for the suggestions. I am go
ing to do those in the next few days. We=0Ahave=0Aa few bank holidays any w
ay so, time to fly.=0AI ordered the filters, just in case, it certainly won
't hurt to install=0Athese and=0Aat the same time I can check the shielding
at the P-lead.=0AI'll keep you updated!=0A=0AHans=0ATel: +31 653 286022=0A
=0A=0A________________________________=0A=0AVan: owner-yak-list-server@matr
onics.com=0A[mailto:owner-yak-list-server@matronics.com] Namens Yak Pilot
=0AVerzonden: donderdag 21 mei 2009 5:37=0AAan: yak-list@matronics.com=0AOn
derwerp: Re: Yak-List: Interference of GPS on Becker VHF=0A=0A=0AHans, this
is a much better explanation.- Try this.- Next time you go fly,=0Aleav
e=0Athe power lead connected for the GPS, but if possible unplug the GPS it
self=0Awhile leaving the power cord connected to the aircraft.- Hopefully
there is=0Aa=0Adisconnect plug at the GPS itself that would allow you to k
eep the GPS power=0Acord=0Aconnected with the actual GPS removed.- Also t
ell me what happens if you=0ATURN=0ATHE GPS OFF in flight!- Does this imp
act the noise in the radio with the=0Aengine=0Arunning?- If NOT, then for
some reason your GPS power cable is either=0Aradiating=0Anoise "somehow" o
r is picking noise up and putting it back into wiring=0Awhere it should not
be.- =0A=0AWhile unusual, this kind of thing is not unknown.- =0A=0AI
suggest replacing your GPS power wire with dual conductor SHIELDED wire=0Aa
nd make=0Asure the shield is connected to ground at the power connector sid
e only. =0A=0A=0AAlso, reducing RF noise from the Mags by using filters is
never a bad idea.=0ABefore=0Ayou do that, PLEASE check the P lead shields r
ight at the MAG P LEAD=0ACONNECTOR=0Aand make sure they are not twisted off
!- That happens ALL the time, and=0Ayou need to physically check this you
rself.- When you unscrew the P lead=0Aconnector=0Aon the mag, be SURE to
hold the center of it still as you rotate the knurled=0Aknob or you will tw
ist the shield right off.- =0A=0ABest Regards, =0A=0AMark Bitterlich=0A
=0A=0A________________________________=0A=0AFrom: Hans Oortman <pa3arw@euro
net.nl>=0ASent: Monday, May 18, 2009 5:12:12 AM=0ASubject: RE: Yak-List: In
terference of GPS on Becker VHF=0A=0A=0AMark,=0A=0A=0AThanks for all the go
od advise/suggestions. I'll have a look at the=0Ashieldings.=0AWhen you men
tioned this, I went back in history and tried to recall when=0Athis=0Apheno
ma started to occur. It is only since the last year and a half or so=0Athat
=0Athis has become a real problem.=0A=0AI don't fly a lot with gps but when
I do, I need it, if you know what I=0Amean.=0A=0AAs far as I can recall it
happened after a 100hrs check up (done by our=0ALithuanian=0Amechanic). At
the same time, almost 2 years ago, I used the opportunity to=0Ainstall an
additional power connector of the Lemo type. These Swiss=0Aconnectors=0Aare
the best you can find and have a lock facility build in rather than the=0A
normal cigarette lighter connectors which are big and have as good as no=0A
locking=0Afacility. I use those Lemo's in my company for equipment we desig
n/produce=0Afor cable companies. To make sure that this power lead does not
pick up RF,=0AI=0Ainstalled a RF-choke just before the connector.=0A=0AWhe
n the engine is not running I hear no interference on any channel on the=0A
Becker=0ARadio. The GPS is connected to the YAK52's power and there are no
problems=0Awhat so ever.=0A=0AIt is only after I start the engine that the
problem occurs as long as I=0Ahave the=0AGPS connected to the planes power.
When I disconnect the power lead (a long=0Acurled cable) from the planes p
ower the problem is gone. The AvMap IV does=0Ahave=0Aa RF choke in its powe
r lead.=0A=0AI was under the impression that the problem was caused by the
gps but it is=0Athe=0Acombination of the set up, i.e. engine, radio, gps, w
hich causes this=0Aproblem,=0Anot an individual piece of equipment..I think
...and only when the engine is=0Arunning.=0A=0A=0AI'll check the shields of
the p-leads on both mags. The tacho generator has=0Aalready=0Abeen checked
and the shielding of that device is OK. =0A=0AInstalling these filters won
't hurt any way, so I'll order them, just in=0Acase.=0A=0A=0AThanks for you
r help and advise!=0A=0A=0AHans Oortman, MBA, Ph.D.=0A=0ACEO=0A=0ASTN BV=0A
=0A________________________________=0A=0AVan: owner-yak-list-server@matroni
cs.com=0A[mailto:owner-yak-list-server@matronics.com] Namens Yak Pilot=0AVe
rzonden: maandag 18 mei 2009 7:53=0AAan: yak-list@matronics.com=0AOnderwerp
: Re: Yak-List: Interference of GPS on Becker VHF=0A=0A=0ALet me clarify a
little here.- There is a shielded P lead wire.- The center=0Aconductor
=0Ais soldered to a little device that fits into the mag itself and makes
=0Aan internal connection to the mag coil.- You push this into the mag P
lead=0Ahole=0Aand THEN screw on the outer shell per se.- =0A=0A=0AThe shi
eld for this wire is soldered to a wire CUP that fits into the screw=0Aon
=0Aportion of the mag P lead connector AKA "The Shell".- When you screw i
n the=0AP=0Alead connector onto the mag, or OFF of the mag, it is very easy
to turn the=0Athreaded=0Aportion and ALSO turn the little piece that is so
ldered to the shield.=0AIf you DO turn this little piece as you screw off t
he threaded portion of=0Athe=0AP lead connector, you will also twist the sh
ield, and in so-doing will cause=0Athe shield to rip off from the connector
.- Thus the shield is no longer=0Aconnected=0Aand there is no ground for
it.- =0A=0A=0AIt is like MASSIVELY EASY to do this!- EVERY SINGLE AIRCR
AFT USING AN M-14=0AENGINE=0AI HAVE EVER SEEN HAS AT LEAST SOME DAMAGE IN T
HIS AREA!- Every single one.=0AThis WILL cause radio noise.- Every time
.- (Hans, your problem is likely=0Asomething=0Aelse) =0A=0A=0AThe only wa
y to avoid doing it is to "somehow" carefully hold that cup piece=0Athat=0A
sticks out the back of the threaded portion of the connector (the NUT per
=0Ase)=0Astill as you turn the piece that screws off with your hand.- I h
ave a=0Aspecial=0Atool made to do this.- You can use needle nose pliers i
f you are careful. =0ABut if you ignore this advice and take off a P lead c
onnector... you have=0AVERY=0AHIGH ODDS of damaging the shield.- =0A=0A
=0ARest assured, if you didn't know this, it is even money that your P lead
=0Ashields=0Aare at the very minimum "damaged" if not completely broken.
=0A=0A=0AMark=0A=0A=0A________________________________=0A=0AFrom: Yak Pilot
<yakplt@yahoo.com>=0ASent: Monday, May 18, 2009 12:47:56 AM=0ASubject: Re:
Yak-List: Interference of GPS on Becker VHF=0A=0AOne of the most common so
urces of interference to radios is from the P=0Aleads. =0AOne of the most c
ommon causes for that is the loss of a ground for the=0Ashield.=0AThe way t
his happens is when you unscrew the P lead connector on the mag=0Aitself,
=0Ayou do not also hold the shield cup on the back of the P lead connector
=0Astill=0Aas you unscrew the P lead connector itself.- The result of thi
s is that you=0Aend up twisting the shield right off the connector. =0A=0A
=0AWhen you do this, the shield is no longer grounded.- If the shield is
not=0Agrounded,=0Ait will radiate noise just like there was no shield there
to begin with and=0Ayour radios will be filled with static and noise.-
=0A=0A=0ASo, before you go out and install any kind of filters, ALWAYS make
sure that=0Ayour=0AP LEAD shields are indeed correctly soldered and attach
ed to the P lead=0Aconnector=0Aitself.- =0A=0A=0AIf everything is ok in t
hat department and you still have noise and decide=0Ato try=0Aa P lead filt
er, install it any way you choose, but make certain that when=0Ayou are don
e, the P lead shield itself still has a proper ground on it, if=0Anot=0Aat
the P lead connector itself, then in some other manner as you see fit.=0ADo
=0Anot allow the P lead wire shield "float", and keep the amount of unshiel
ded=0AP=0Alead wire as short as possible when installing a filter and keep
the length=0Aof=0Athe wire from the P lead shield to ground as short as pos
sible as well.- =0A=0A=0AAnother terrific source of noise is the Tach Gen
, and if the shield on that=0Awire=0Abundle breaks, the noise can be so str
ong it will burn out the receiver on a=0ABalkan 5.- =0A=0A=0AMark Bitterl
ich=0A=0A=0A________________________________=0A=0AFrom: Roger Kemp M.D. <vi
perdoc@mindspring.com>=0ASent: Monday, May 18, 2009 11:10:52 AM=0ASubject:
RE: Yak-List: Interference of GPS on Becker VHF=0A=0ATwo magneto filters ar
e required.=0A=0ADoc=0A=0A=0AFrom: owner-yak-list-server@matronics.com=0A[m
ailto:owner-yak-list-server@matronics.com] On Behalf Of A. Dennis Savarese
=0ASent: Sunday, May 17, 2009 8:26 AM=0ASubject: Re: Yak-List: Interference
of GPS on Becker VHF=0A=0A=0AYes, we installed both filters.=0A=0ADennis
=0A=0A--- ----- Original Message ----- =0A=0A--- From: Hans Oor
tman <mailto:pa3arw@euronet.nl>- =0A=0A--- To: yak-list@matronics.c
om =0A=0A--- Sent: Sunday, May 17, 2009 8:22 AM=0A=0A--- Subjec
t: RE: Yak-List: Interference of GPS on Becker VHF=0A=0A--- =0A=0A-
-- Dennis,=0A=0A--- =0A=0A--- Did you install the in-line f
ilter as well as the magneto filter??=0A=0A--- =0A=0A--- Hans
=0A=0A--- =0A=0A--- =0A________________________________=0A=0A
=0A--- Van: owner-yak-list-server@matronics.com=0A[mailto:owner-yak-l
ist-server@matronics.com] Namens A. Dennis Savarese=0A--- Verzonden:
zondag 17 mei 2009 15:03=0A--- Aan: yak-list@matronics.com=0A--
- Onderwerp: Re: Yak-List: Interference of GPS on Becker VHF=0A=0A--
- We recently had a problem with Doc's Yak 50 with noise on the Becker=0A
VHF.- First we installed a nice inline filter on the DC buss;=0Ahttp://ww
w.lonestaraviation.com/product_details.asp?Product_Name=The%20Elimi=0Anat
or.- It removed much of the noise, but not all.- Then we installed the
=0Amagneto filters directly on the P leads going into the magnetos.=0Ahttp:
//www.lonestaraviation.com/product_details.asp?Product_Name=Magneto%20F
=0Ailter.- Bingo.....noise eliminated.- I mounted the ground strap to t
he studs=0Aon the accessory case back plate.=0A=0A--- Dennis=0A=0A-
-- =0A=0A--- --- ----- Original Message ----- =0A=0A--
- --- From: Hans Oortman <mailto:pa3arw@euronet.nl>- =0A=0A--
- --- To: yak-list@matronics.com =0A=0A--- --- Sent: Su
nday, May 17, 2009 7:42 AM=0A=0A--- --- Subject: Yak-List: Inte
rference of GPS on Becker VHF=0A=0A--- --- =0A=0A--- -
-- Guys,=0A=0A--- --- =0A=0A--- --- May be some
of you on the yak net has some idea how to=0Aresolve the following=0Aprobl
em. Mark any suggestions??=0A=0A--- --- =0A=0A--- --
- I own a Avmap IV GPS, great tool but it is getting a=0Anuisance in the
52.=0A=0A--- --- =0A=0A--- --- The following happen
s: when on the ground GPS switched on,=0AVHF on, engine NOT=0Arunning, no i
nterference on VHF at all!=0A=0A--- --- - - - - - -
- - - - - - - - - - - when on the ground GPS=0Aswitc
hed on, VHF on,=0Aengine running (or in the air for that matter), huge inte
rference on VHF, S5=0Ato 6 noise level, i.e. very difficult comms. When swi
tching over on battery=0A(i.e.=0Apulling the plug out...) the problem is as
good as gone.=0A=0A--- --- =0A=0A--- --- Has any b
ody had this experience also and what have you done=0Aabout it?- I am=0At
hinking on a LPF or a separate DC-DC convertor for the AvMap GPS.=0A=0A-
-- --- In principle the AvMap swallows any voltage between 10 and
=0A36v. I assume that=0Athe 28v generator is not producing a nice DC which
causes something to start=0Agenerating a noise, in my case the GPS but I do
not have an explanation for=0Athat=0Aat all....=0A=0A--- ---
=0A=0A--- --- Any help is appreciated!=0A=0A--- ---
=0A=0A--- --- Hans =0A=0A--- --- RA3326K / EHSE=0A
=0A--- --- - =0A--- --- - =0A--- =0Ahref
="http://www.matronics.com/Navigator?Yak-List">http://www.matronhref="h
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ics.com/Navigator?Yak-List">http://www.matronhref="ht=0Atp://forums.matro
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st">http://www.matronics.com/=0ANavigator?Yak-List=0Ahref="http://forums.
matronics.com">http://forums.matronics.com=0Ahref="http://www.matronics.c
om/contribution">http://www.matronics.com/c=0A=0A=0A_______________________
_________- Message 4=0A_____________________________________=0A=0A=0ATime
: 09:41:40 AM PST US=0ASubject: Re: Yak-List: Still looking for a snot valv
e - help=0AFrom: doug sapp <dougsappllc@gmail.com>=0A=0AAs always your mile
age may vary but the thought of a rusted or corroded air=0Abottle exploding
in a aircraft really chills my crap!, in my mind it is=0Asimply is not wor
th the chance.- Add to this the fact that your pushing all=0Athe moisture
and gunk into your expensive start valve and check valves which=0Ais just
not a good deal even if you have replaced all the springs with=0Astainless
steel.- IMHO the added cost of a snot valve AND a dessicant filter=0Awill
save you a bunch of money and trouble down the road.=0AAlways Yakin,=0ADou
g=0A=0AOn Fri, May 22, 2009 at 4:23 AM, Scott Poehlmann <scott-p@texas.net>
wrote:=0A=0A>=0A> Hi Anthony,=0A>=0A> Since the volume of the bottle (and
the whole system, in fact) on the 55=0Ais=0A> so low, many do not have sepa
rate snot valves. Mine for example only has=0Athe=0A> valve on the bottom o
f the tank. I dutifully open it slightly and drain=0Aout=0A> the gunk about
once a week or so (and you don't need to completely drain=0Athe=0A> system
, though until you get used to doing it quickly, be prepared to=0Arefill=0A
> the air system), and at each annual I use that valve to drain the entire
=0A> system. It is also the lowest point in the system, so that's where the
=0Agunk=0A> ends up.=0A>=0A> Scott=0A>=0A>=0A> Yak 55M wrote:=0A>=0A>> Hi,
=0A>>=0A>> I have finally secured almost everything I need to add a compres
sor to my=0A>> Yak55M, but I am missing one more item - a snot valve.- It
seems this=0Alittle=0A>> item is difficult to get.- Any lines on where I
can get a snot valve=0Awould=0A>> be greatly appreciated.=0A>>=0A>> Thanks
in advance,=0A>>=0A>> Anthony.=0A>>=0A>> BTW, thanks for all of the advice
in finding the sheer coupling and=0Agauge,=0A>> this list made it happen.
=0A>> *=0A>>=0A>>=0A>> *=0A>>=0A>=0A>=0A=0A=0A-- =0AAlways Yakin,=0ADoug Sa
pp=0APhone 509-826-4610=0AFax 509-826-3644=0A=0A___________________________
_____- Message 5=0A_____________________________________=0A=0A=0ATime: 09
:41:43 AM PST US=0ASubject: RE: Yak-List: Engine or prop judder on 18 T=0AF
rom: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E"=0A<mark.bitterl
ich@navy.mil>=0A=0AThis might sound especially stupid and I hesitate to eve
n mention it,=0Abut.....=0AI recently had a very interesting problem in my
YAK-50.- Along with it=0Abecoming=0Avery difficult to start when hot, it
also developed a very noticeable shake=0Aat high speeds.- Pretty much exa
ctly as you described which is why I am=0Aabout=0Ato go out on a limb and j
ust mention what happened to me. =0A=0AAnyway, after a full year of problem
s with the M-14 not wanting to start=0Awhen hot,=0Aand after replacing ever
y single piece of the starter ignition system, the=0Aonly thing left was th
e spark plugs.- I am using automotive plugs via=0ADennis's=0Akit, which b
y the way is the best thing since sliced bread.- =0A=0ASo, I replaced the
plugs.- The starting problem went away and all is now=0Awell.=0AI really
had a hard time believing it was the plugs.- Still do in fact, but=0Athe
=0Afact is.... The problem is GONE!- =0A=0AANYWAY ~ Funny thing.- The h
igh speed vibration went away too.- Mag checks=0Aduring=0Aall of this wer
e always good.- No indication of plug problems at all.- Upon=0Ainspecti
on, found that the plug gap was set too wide ... My fault for not=0Adouble
=0Achecking the A&P that was helping me put in the kit way back when.- Th
e=0Aplugs=0Awere at .032 or so.- Dennis recommends .025- I have talked
to other folks=0Awho claim .018 is about right, and that wider than .018 ca
n cause "starting=0Aproblems".=0AI have mine now gapped at .025 per Dennis'
s recommendation and everything=0Ais working perfectly, so I will avoid .01
8, but it is worth keeping in=0Athe back of your head.- =0A=0AAnyway... T
o get to the point... It's a real long shot, but you might have a=0Aspark
=0Aplug problem, or some other sort of ignition problem, especially if you
are=0Ausing the original ignition wiring and ring.- =0A=0AMark Bitterlich
=0A=0A=0A-----Original Message-----=0AFrom: owner-yak-list-server@matronics
.com=0A[mailto:owner-yak-list-server@matronics.com] On Behalf Of Vic=0ASent
: Tuesday, May 19, 2009 5:26 PM=0ASubject: Yak-List: Engine or prop judder
on 18 T=0A=0A=0AHello everybody,=0A=0Aour 18 T has developed an engine or p
rop judder since last year that can be=0Anoticed=0Amainly in high speed low
passes at , say, 70 % engine speed and over 250=0Akph . We replaced all en
gine mounting rubbers, did a dynamic prop balancing=0Aon=0Athe ground with
up to 90 % engine speed and the engine felt real smooth. But=0Ain the air a
t high speed dives the shaking of the engine/prop was still=0Athere=0A- at
a very reduced rate, but still noticeable . The setting of the blades=0Awas
=0Achecked and seemed to be allright in the dynamic balancing . Could we ha
ve a=0Aproblem with the prop hub in case the prop goes to fully coarse in t
he dive=0Aand=0Athe blade angles in this condition might be different for e
ach blade ? We=0Asuspect=0Asome sort of backlash in the hub different for e
ach side ? Has anybody an=0Aidea on that one ? Or could it be an aerodynami
c effect specific for the 18=0AT ? We will dig deeper next weekend but any
ideas would be appreciated. =0A=0A- - - - - - - - - -
- - - - - - - - - - - Regards=0A- - - - -
- - - - - - - - - - - - - - - - - - -
- - - - - - - Helga and Vic=0A=0A=0ARead this topic online h
ere:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=244696#244696=0A=0A
=0A________________________________- Message 6=0A________________________
_____________=0A=0A=0ATime: 09:42:52 AM PST US=0AFrom: Herb Coussons <drc@w
scare.com>=0ASubject: Re: Yak-List: Still looking for a snot valve - help
=0A=0A=0AExact same for me, the low point drain for the bottom of the air t
ank- =0Ais mounted just on the Left of the oil cooler doghouse.- Althou
gh it- =0Awould be nice to have a separate valve to relaesa without dumpi
ng the- =0Aair.=0A=0A=0AHerb=0A=0A=0AOn May 22, 2009, at 6:23 AM, Scott P
oehlmann wrote:=0A=0A>=0A> Hi Anthony,=0A>=0A> Since the volume of the bott
le (and the whole system, in fact) on- =0A> the 55 is so low, many do not
have separate snot valves. Mine for- =0A> example only has the valve on
the bottom of the tank. I dutifully- =0A> open it slightly and drain out
the gunk about once a week or so (and- =0A> you don't need to completely
drain the system, though until you get- =0A> used to doing it quickly, be
prepared to refill the air system), and- =0A> at each annual I use that
valve to drain the entire system. It is- =0A> also the lowest point in th
e system, so that's where the gunk ends up.=0A>=0A> Scott=0A>=0A> Yak 55M w
rote:=0A>> Hi,=0A>>=0A>> I have finally secured almost everything I need to
add a compressor- =0A>> to my Yak55M, but I am missing one more item - a
snot valve.- It- =0A>> seems this little item is difficult to get.-
Any lines on where I- =0A>> can get a snot valve would be greatly appreci
ated.=0A>>=0A>> Thanks in advance,=0A>>=0A>> Anthony.=0A>>=0A>> BTW, thanks
for all of the advice in finding the sheer coupling and- =0A>> gauge, th
is list made it happen.=0A>> *=0A>>=0A>>=0A>> *=0A>=0A>=0A=0A=0A___________
_____________________- Message 7=0A_____________________________________
=0A=0A=0ATime: 11:12:04 AM PST US=0AFrom: Herb Coussons <drc@wscare.com>=0A
Subject: Re: Yak-List: Still looking for a snot valve - help=0A=0ADoug,=0AI
f you are familiar with the yak 55 system (maybe they are all unique- =0A
as they are each a retrofit), please describe the plumbing- to add the-
=0Asnot valve.=0AHas any body thought of adding a valve like the Wilga.-
My Yak 52 TW- =0Ahas the pull handle is in the cockpit to release the va
lve.- On the- =0AWilga it was up front behind the right cowl cheek - a
screw type valve- =0Athat released right there.- Which of these types i
s more like the CJ- =0Aor standard Yak?=0A=0AI would think the Wilga type
would be the easiest to plumb for the 55- =0Asince the whole air system
is in front of the firewall except the fill- =0Aport and guage.=0A=0A=0AT
hanks,=0A=0AHerb=0A=0A=0AOn May 22, 2009, at 11:29 AM, doug sapp wrote:=0A
=0A> As always your mileage may vary but the thought of a rusted or- =0A>
corroded air bottle exploding in a aircraft really chills my crap!,- =0A
> in my mind it is simply is not worth the chance.- Add to this the-
=0A> fact that your pushing all the moisture and gunk into your expensive
- =0A> start valve and check valves which is just not a good deal even if
- =0A> you have replaced all the springs with stainless steel.- IMHO th
e- =0A> added cost of a snot valve AND a dessicant filter will save you a
- =0A> bunch of money and trouble down the road.=0A>=0A> Always Yakin,=0A
> Doug=0A>=0A> On Fri, May 22, 2009 at 4:23 AM, Scott Poehlmann <scott-p@te
xas.net>- =0A> wrote:=0A>=0A> Hi Anthony,=0A>=0A> Since the volume of the
bottle (and the whole system, in fact) on- =0A> the 55 is so low, many d
o not have separate snot valves. Mine for- =0A> example only has the valv
e on the bottom of the tank. I dutifully- =0A> open it slightly and drain
out the gunk about once a week or so (and- =0A> you don't need to comple
tely drain the system, though until you get- =0A> used to doing it quickl
y, be prepared to refill the air system), and- =0A> at each annual I use
that valve to drain the entire system. It is- =0A> also the lowest point
in the system, so that's where the gunk ends up.=0A>=0A> Scott=0A>=0A>=0A>
Yak 55M wrote:=0A> Hi,=0A>=0A> I have finally secured almost everything I n
eed to add a compressor- =0A> to my Yak55M, but I am missing one more ite
m - a snot valve.- It- =0A> seems this little item is difficult to get.
- Any lines on where I- =0A> can get a snot valve would be greatly appr
eciated.=0A>=0A> Thanks in advance,=0A>=0A> Anthony.=0A>=0A> BTW, thanks fo
r all of the advice in finding the sheer coupling and- =0A> gauge, this l
ist made it happen.=0A> *=0A>=0A>=0A> *=0A>=0A> =========
==0A> rget="_blank">http://www.matronics.com/Navigator?Yak-List=0A> =
==========0A> http://forums.matronics.com=0A> ===
========0A> le, List Admin.=0A> ="_blank">http://www.matron
ics.com/contribution=0A> ===========0A>=0A>=0A> -- =0A>
Always Yakin,=0A> Doug Sapp=0A> Phone 509-826-4610=0A> Fax 509-826-3644=0A
>=0A>=0A=0A=0A________________________________- Message 8=0A_____________
________________________=0A=0A=0ATime: 11:17:24 AM PST US=0AFrom: "Roger Ke
mp M.D." <viperdoc@mindspring.com>=0ASubject: RE: Yak-List: Engine or prop
judder on 18 T=0A=0A=0AA glow plug. Quite possible...did not think of that
one. The exact way a=0Adiesel engine or R/C model airplane engine runs...we
ll used to before=0Aturbines and 4 stroke chainsaw engines were introduced
the modeling=0Acommunities. =0ADoc=0A=0A-----Original Message-----=0AFrom:
owner-yak-list-server@matronics.com=0A[mailto:owner-yak-list-server@matroni
cs.com] On Behalf Of Bitterlich, Mark G=0ACIV Det Cherry Point, MALS-14 64E
=0ASent: Friday, May 22, 2009 11:30 AM=0ASubject: RE: Yak-List: Engine or p
rop judder on 18 T=0A=0AThis might sound especially stupid and I hesitate t
o even mention it,=0Abut.....- I recently had a very interesting problem
in my YAK-50.- Along=0Awith it becoming very difficult to start when hot,
it also developed a very=0Anoticeable shake at high speeds.- Pretty much
exactly as you described which=0Ais why I am about to go out on a limb and
just mention what happened to me. =0A=0AAnyway, after a full year of probl
ems with the M-14 not wanting to start=0Awhen hot, and after replacing ever
y single piece of the starter ignition=0Asystem, the only thing left was th
e spark plugs.- I am using automotive=0Aplugs via Dennis's kit, which by
the way is the best thing since sliced=0Abread.- =0A=0ASo, I replaced the
plugs.- The starting problem went away and all is now=0Awell.- I reall
y had a hard time believing it was the plugs.- Still do in=0Afact, but th
e fact is.... The problem is GONE!- =0A=0AANYWAY ~ Funny thing.- The hi
gh speed vibration went away too.- Mag checks=0Aduring all of this were a
lways good.- No indication of plug problems at all.=0AUpon inspection, fo
und that the plug gap was set too wide ... My fault for=0Anot double checki
ng the A&P that was helping me put in the kit way back=0Awhen.- The plugs
were at .032 or so.- Dennis recommends .025- I have talked=0Ato other
folks who claim .018 is about right, and that wider than .018 can=0Acause "
starting problems".- I have mine now gapped at .025 per Dennis's=0Arecomm
endation and everything is working perfectly, so I will avoid .018,=0Abut i
t is worth keeping in the back of your head.- =0A=0AAnyway... To get to t
he point... It's a real long shot, but you might have a=0Aspark plug proble
m, or some other sort of ignition problem, especially if=0Ayou are using th
e original ignition wiring and ring.- =0A=0AMark Bitterlich=0A=0A=0A-----
Original Message-----=0AFrom: owner-yak-list-server@matronics.com=0A[mailto
:owner-yak-list-server@matronics.com] On Behalf Of Vic=0ASent: Tuesday, May
19, 2009 5:26 PM=0ASubject: Yak-List: Engine or prop judder on 18 T=0A=0A
=0AHello everybody,=0A=0Aour 18 T has developed an engine or prop judder si
nce last year that can be=0Anoticed mainly in high speed low passes at , sa
y, 70 % engine speed and over=0A250 kph . We replaced all engine mounting r
ubbers, did a dynamic prop=0Abalancing on the ground with up to 90 % engine
speed and the engine felt=0Areal smooth. But in the air at high speed dive
s the shaking of the=0Aengine/prop was still there - at a very reduced rate
, but still noticeable .=0AThe setting of the blades was checked and seemed
to be allright in the=0Adynamic balancing . Could we have a problem with t
he prop hub in case the=0Aprop goes to fully coarse in the dive and the bla
de angles in this condition=0Amight be different for each blade ? We suspec
t some sort of backlash in the=0Ahub different for each side ? Has anybody
an idea on that one ? Or could it=0Abe an aerodynamic effect specific for t
he 18 T ? We will dig deeper next=0Aweekend but any ideas would be apprecia
ted. =0A=0A- - - - - - - - - - - - - - - -
- - - - - Regards=0A- - - - - - - - - - -
- - - - - - - - - - - - - - - - - - -
- Helga and Vic=0A=0A=0ARead this topic online here:=0A=0Ahttp://forums.
matronics.com/viewtopic.php?p=244696#244696=0A=0A=0A_____________________
___________- Message 9=0A_____________________________________=0A=0A=0ATi
me: 01:34:43 PM PST US=0ASubject: Re: Yak-List: Still looking for a snot va
lve - help=0AFrom: doug sapp <dougsappllc@gmail.com>=0A=0AHerb,Am really no
t sure of the plumbing on the 55 or the 52 for that matter.=0AFrom your des
cription the Wilga snot valve sounds like the one used on a CJ=0Awherein yo
u reach inside the cowl and turn the knob/wheel and depending on=0Awhich wa
y the wind is blowing it blows crap all over your right leg or foot.=0ATo a
dd a snot valve to any system is not difficult and I have the valves=0Aand
most if not all the fitting here in my stock.- Give me a call if I can=0A
be of help. 509-826-4610=0A=0AI will be at Red Star 24th--the 1st.=0A=0AAlw
ays Yakin,=0ADoug=0A=0AOn Fri, May 22, 2009 at 11:09 AM, Herb Coussons <drc
@wscare.com> wrote:=0A=0A> Doug,If you are familiar with the yak 55 system
(maybe they are all unique=0A> as they are each a retrofit), please describ
e the plumbing- to add the=0Asnot=0A> valve.=0A> Has any body thought of
adding a valve like the Wilga.- My Yak 52 TW has=0A> the pull handle is i
n the cockpit to release the valve.- On the Wilga it=0Awas=0A> up front b
ehind the right cowl cheek - a screw type valve that released=0A> right the
re.- Which of these types is more like the CJ or standard Yak?=0A>=0A> I
would think the Wilga type would be the easiest to plumb for the 55=0Asince
=0A> the whole air system is in front of the firewall except the fill port
and=0A> guage.=0A>=0A>=0A> Thanks,=0A>=0A> Herb=0A>=0A>=0A> On May 22, 2009
, at 11:29 AM, doug sapp wrote:=0A>=0A> As always your mileage may vary but
the thought of a rusted or corroded=0Aair=0A> bottle exploding in a aircra
ft really chills my crap!, in my mind it is=0A> simply is not worth the cha
nce.- Add to this the fact that your pushing=0Aall=0A> the moisture and g
unk into your expensive start valve and check valves=0Awhich=0A> is just no
t a good deal even if you have replaced all the springs with=0A> stainless
steel.- IMHO the added cost of a snot valve AND a dessicant=0Afilter=0A>
will save you a bunch of money and trouble down the road.=0A> Always Yakin,
=0A> Doug=0A>=0A> On Fri, May 22, 2009 at 4:23 AM, Scott Poehlmann <scott-p
@texas.net>wrote:=0A>=0A>>=0A>> Hi Anthony,=0A>>=0A>> Since the volume of t
he bottle (and the whole system, in fact) on the 55=0A>> is so low, many do
not have separate snot valves. Mine for example only=0Ahas=0A>> the valve
on the bottom of the tank. I dutifully open it slightly and=0Adrain=0A>> ou
t the gunk about once a week or so (and you don't need to completely=0Adrai
n=0A>> the system, though until you get used to doing it quickly, be prepar
ed to=0A>> refill the air system), and at each annual I use that valve to d
rain the=0A>> entire system. It is also the lowest point in the system, so
that's where=0A>> the gunk ends up.=0A>>=0A>> Scott=0A>>=0A>>=0A>> Yak 55M
wrote:=0A>>=0A>>> Hi,=0A>>>=0A>>> I have finally secured almost everything
I need to add a compressor to=0Amy=0A>>> Yak55M, but I am missing one more
item - a snot valve.- It seems this=0Alittle=0A>>> item is difficult to g
et.- Any lines on where I can get a snot valve=0Awould=0A>>> be greatly a
ppreciated.=0A>>>=0A>>> Thanks in advance,=0A>>>=0A>>> Anthony.=0A>>>=0A>>>
BTW, thanks for all of the advice in finding the sheer coupling and=0A>>>
gauge, this list made it happen.=0A>>> *=0A>>>=0A>>>=0A>>> *=0A>>>=0A>>=0A>
> ===========0A>> rget="_blank">http://www.matronics.
com/Navigator?Yak-List=0A>> ===========0A>> http://foru
ms.matronics.com=0A>> ===========0A>> le, List Admin.
=0A>> ="_blank">http://www.matronics.com/contribution=0A>> ====
=======0A>>=0A>>=0A>>=0A>>=0A>=0A>=0A> --=0A> Always Yakin,=0A>
Doug Sapp=0A> Phone 509-826-4610=0A> Fax 509-826-3644=0A>=0A>=0A*href="h
ttp://www.matronics.com/Navigator?Yak-List">http://www.matronics.com=0A/Nav
igator?Yak-List=0A> href="http://forums.matronics.com">http://forums.matr
onics.com=0A>=0Ahref="http://www.matronics.com/contribution">http://www.m
atronics.com/contri=0Abution=0A> *=0A>=0A>=0A> *=0A>=0A>=0A=0A=0A-- =0AAlwa
ys Yakin,=0ADoug Sapp=0APhone 509-826-4610=0AFax 509-826-3644=0A=0A________
________________________- Message 10=0A__________________________________
__=0A=0A=0ATime: 05:37:41 PM PST US=0AFrom: Scott Poehlmann <scott-p@texas.
net>=0ASubject: Re: Yak-List: Still looking for a snot valve - help=0A=0A
=0AHi Dennis,=0A=0AI agree with your concern, but the system in a most 55's
is different =0Athan that in the 52 (or even the 50). First off, I (and mo
st others) =0Ahave an overboard dump line--99% of the time the compressor i
s pumping =0Aair overboard and NOT through the system, thus most of the tim
e the =0Asystem is sealed. I dutifully check for "snot" but essentially NEV
ER get =0Aanything out. Second, the system ONLY operates the starter--thus
the =0Alines are short and relatively straight--in fact my entire air syste
m is =0Aon the engine side of the firewall except for the line to the cockp
it =0Apressure guage. Third, I at least have my tank visually inspected eve
ry =0Aother annual or so, so I know it isn't corroded (as a gynecologist, I
=0Afind it fascinating that the exact same instrument I call a "diagnostic
=0Ahysteroscope" and which costs over $15,000 can be had by an A&P for <
=0A$500 when it is called a "flexible boroscope"... but that's another =0Ad
iscussion...). Given these things, I don't think that using the tank =0Abot
tom drain valve as the snot valve is unreasonable--adding such a =0Avalve w
ould just give me another point from which the system could leak. =0ABut th
e concern about corrosion is very real--just one look at the 52 =0Afrom Eng
land that had the bottle explode is enough to convince me!=0A=0ABest,=0A=0A
Scott=0A=0Adoug sapp wrote:=0A> As always your mileage may vary but the tho
ught of a rusted or =0A> corroded air bottle exploding in a aircraft really
chills my crap!, in =0A> my mind it is simply is not worth the chance.-
Add to this the fact =0A> that your pushing all the moisture and gunk into
your expensive start =0A> valve and check valves which is just not a good d
eal even if you have =0A> replaced all the springs with stainless steel.-
IMHO the added cost of =0A> a snot valve AND a dessicant filter will save
you a bunch of money and =0A> trouble down the road.- =0A>=0A> Always Yak
in,=0A> Doug=0A>=0A> On Fri, May 22, 2009 at 4:23 AM, Scott Poehlmann <scot
t-p@texas.net =0A> <mailto:scott-p@texas.net>> wrote:=0A>=0A>- - <mailt
o:scott-p@texas.net>>=0A>=0A>- - Hi Anthony,=0A>=0A>- - Since the v
olume of the bottle (and the whole system, in fact) on=0A>- - the 55 is
so low, many do not have separate snot valves. Mine for=0A>- - example
only has the valve on the bottom of the tank. I dutifully=0A>- - open
it slightly and drain out the gunk about once a week or so=0A>- - (and
you don't need to completely drain the system, though until=0A>- - you
get used to doing it quickly, be prepared to refill the air=0A>- - syst
em), and at each annual I use that valve to drain the entire=0A>- - sys
tem. It is also the lowest point in the system, so that's where=0A>- -
the gunk ends up.=0A>=0A>- - Scott=0A>=0A>=0A>- - Yak 55M wrote:=0A
>=0A>- - - - Hi,=0A>=0A>- - - - I have finally secured almo
st everything I need to add a=0A>- - - - compressor to my Yak55M, b
ut I am missing one more item - a=0A>- - - - snot valve.- It seem
s this little item is difficult to get.=0A>- - - - - Any lines on
where I can get a snot valve would be greatly=0A>- - - - appreciat
ed.=0A>=0A>- - - - Thanks in advance,=0A>=0A>- - - - Anthon
y.=0A>=0A>- - - - BTW, thanks for all of the advice in finding the
sheer=0A>- - - - coupling and gauge, this list made it happen.=0A>
- - - - *=0A>=0A>=0A>- - - - *=0A>=0A>=0A>- - ===
========0A>- - rget="_blank">http://www.matronics.com/N
avigator?Yak-List=0A>- - ===========0A>- - http
://forums.matronics.com=0A>- - ===========0A>-
- le, List Admin.=0A>- - ="_blank">http://www.matronics.com/contrib
ution=0A>- - ===========0A>=0A>=0A> -- =0A> Always
Yakin,=0A> Doug Sapp=0A> Phone 509-826-4610=0A> Fax 509-826-3644=0A> *=0A>
=0A>=0A> *=0A=0A=0A________________________________- Message 11=0A_______
_____________________________=0A=0A=0ATime: 05:50:33 PM PST US=0AFrom: "Joe
Howse" <joeh@shaw.ca>=0ASubject: Re: Yak-List: Overhauled M14P engines ava
ilable=0A=0ADenni=0A=0AHow much?=0A=0AJoe=0A- ----- Original Message ----
- =0A- From: A. Dennis Savarese =0A- To: yak-list@matronics.com ; m14pe
ngines-list@matronics.com =0A- Sent: Tuesday, May 19, 2009 5:50 AM=0A-
Subject: Yak-List: Overhauled M14P engines available=0A=0A=0A- If anyone
is interested in an overhauled M14P engine with prop flange =0Afor V530 or
MTV 9 propeller, overhauled by SC Motorstar in 2008 with =0Aoverhaul paperw
ork, please contact me off-list.- I have 3 engines =0Aavailable.- They
are here in the US and presently stored in a climate =0Acontrolled storage
facility in Alabama.=0A=0A- I will be happy to discuss a serviceable core
exchange with you as =0Awell.=0A- Dennis=0A=0A=0A_______________________
_________- Message 12=0A____________________________________=0A=0A=0ATime
: 07:40:39 PM PST US=0AFrom: Herb Coussons <drc@wscare.com>=0ASubject: Re:
Yak-List: Still looking for a snot valve - help=0A=0A=0AAre you kidding - a
gynecologist?=0AMe too!- And I actually have used a flexible hysteroscop
e on an- =0Aairplane.=0A=0A=0AI have the same experience with the 55, I g
et hardly any return when I- =0Ause the valve connected to the bottom of
the tank.- Whereas the CJ- =0Adescription that Doug gave, turning the k
nob behind the cowl on the- =0AWilga dumped the biggest mess you can imag
ine.=0A=0AHerb Coussons=0A=0A=0AOn May 22, 2009, at 7:35 PM, Scott Poehlman
n wrote:=0A=0A>=0A> Hi Dennis,=0A>=0A> I agree with your concern, but the s
ystem in a most 55's is- =0A> different than that in the 52 (or even the
50). First off, I (and- =0A> most others) have an overboard dump line--99
% of the time the- =0A> compressor is pumping air overboard and NOT throu
gh the system, thus- =0A> most of the time the system is sealed. I dutifu
lly check for "snot"- =0A> but essentially NEVER get anything out. Second
, the system ONLY- =0A> operates the starter--thus the lines are short an
d relatively- =0A> straight--in fact my entire air system is on the engin
e side of the- =0A> firewall except for the line to the cockpit pressure
guage. Third, I- =0A> at least have my tank visually inspected every othe
r annual or so,- =0A> so I know it isn't corroded (as a gynecologist, I f
ind it- =0A> fascinating that the exact same instrument I call a "diagnos
tic- =0A> hysteroscope" and which costs over $15,000 can be had by an A&P
for- =0A> < $500 when it is called a "flexible boroscope"... but that's
- =0A> another discussion...). Given these things, I don't think that usi
ng- =0A> the tank bottom drain valve as the snot valve is unreasonable--
=0A> adding such a valve would just give me another point from which the-
=0A> system could leak. But the concern about corrosion is very real-- =0A
> just one look at the 52 from England that had the bottle explode is-
=0A> enough to convince me!=0A>=0A> Best,=0A>=0A> Scott=0A>=0A> doug sapp w
rote:=0A>> As always your mileage may vary but the thought of a rusted or
- =0A>> corroded air bottle exploding in a aircraft really chills my crap
!,- =0A>> in my mind it is simply is not worth the chance.- Add to this
the- =0A>> fact that your pushing all the moisture and gunk into your-
=0A>> expensive start valve and check valves which is just not a good-
=0A>> deal even if you have replaced all the springs with stainless- =0A>
> steel.- IMHO the added cost of a snot valve AND a dessicant filter-
=0A>> will save you a bunch of money and trouble down the road.=0A>> Always
Yakin,=0A>> Doug=0A>>=0A>> On Fri, May 22, 2009 at 4:23 AM, Scott Poehlman
n <scott-p@texas.net- =0A>> <mailto:scott-p@texas.net>> wrote:=0A>>=0A>>
- - <mailto:scott-p@texas.net>>=0A>>=0A>>- - Hi Anthony,=0A>>=0A>>
- - Since the volume of the bottle (and the whole system, in fact) on
=0A>>- - the 55 is so low, many do not have separate snot valves. Mine
for=0A>>- - example only has the valve on the bottom of the tank. I dut
ifully=0A>>- - open it slightly and drain out the gunk about once a wee
k or so=0A>>- - (and you don't need to completely drain the system, tho
ugh until=0A>>- - you get used to doing it quickly, be prepared to refi
ll the air=0A>>- - system), and at each annual I use that valve to drai
n the entire=0A>>- - system. It is also the lowest point in the system,
so that's where=0A>>- - the gunk ends up.=0A>>=0A>>- - Scott=0A>>
=0A>>=0A>>- - Yak 55M wrote:=0A>>=0A>>- - - - Hi,=0A>>=0A>>-
- - - I have finally secured almost everything I need to add a=0A>>
- - - - compressor to my Yak55M, but I am missing one more item - a
=0A>>- - - - snot valve.- It seems this little item is difficult
to get.=0A>>- - - - Any lines on where I can get a snot valve would
be greatly=0A>>- - - - appreciated.=0A>>=0A>>- - - - Thank
s in advance,=0A>>=0A>>- - - - Anthony.=0A>>=0A>>- - - - BT
W, thanks for all of the advice in finding the sheer=0A>>- - - - co
upling and gauge, this list made it happen.=0A>>- - - - *=0A>>=0A>>
=0A>>- - - - *=0A>>=0A>>=0A>>- - ==========
=0A>>- - rget="_blank">http://www.matronics.com/Navigator?Yak-List=0A
>>- - ===========0A>>- - http://forums.matronic
s.com=0A>>- - ===========0A>>- - le, List Admin
.=0A>>- - ="_blank">http://www.matronics.com/contribution=0A>>- -
===========0A>>=0A>>=0A>>=0A>>=0A>>=0A>>=0A>> -- =0A>>
Always Yakin,=0A>> Doug Sapp=0A>> Phone 509-826-4610=0A>> Fax 509-826-3644
=0A>> *=0A>>=0A>>=0A>> *=0A>=0A>=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0AChecked by
=========================0A
=======================
Message 12
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| Subject: | Re: yak 52 fuel instrument |
Well I did some trouble shooting and now I have confirmed I have a
faulty instrument and the sending units are good. Does anyone have any
suggestions on trouble shooting the instrument (right side) or perhaps
someone knows where I can get a good instrument. Steve.
Sent from my iPhone
On May 25, 2009, at 8:29 PM, Yak Pilot <yakplt@yahoo.com> wrote:
> For anyone following this string..
>
> I=99ve looked at Rob=99s diagrams and schematics and think
that he is
> absolutely on the right sheet of music on how this system works. I
> thought it was all phase related (I.E. Analog in nature) and not an
> y kind of binary counter, in sequence or otherwise. After looking
> at Rob=99s work I have to conclude that I am totally wrong with
my ass
> umptions and Rob=99s theory of operation is exactly right. Nice
work
> Rob. Really first class.
>
> Mark Bitterlich
>
>
> From: Rob Rowe <yak-list@robrowe.plus.com>
> To: yak-list@matronics.com
> Sent: Monday, May 25, 2009 10:30:32 AM
> Subject: Yak-List: Re: yak 52 fuel instrument
>
>
> Mark,
>
> I'll email you a later version of my schematic with the (2006) error
> corrected.
>
> You may have read too much into my last post. I didn't say it was a
> progressive binary sequence, just that there could be a unique logic
> combination per discrete fuel level.
>
> To that end I've created a logic state table (PDF attached - I'll
> email you a copy too) that weights the secondary coils by their
> individual in/anti-phase winding ratios.
>
> By arbitrarily multiplying this logic weighted ratio by 50 to make
> the numbers easier to interpret, the result is a close approximation
> of the fuel display readings (within +/- 4% until
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=245255#245255
>
>
> Attachments:
>
> http://forums.matronics.com//files/fuel_display_logic_table_147.pdf
>
>
Message 13
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| Subject: | Re: yak 52 fuel instrument |
Stephen... WTF Over?=C2- =0A=0AYou said:=C2- " If this helps. I have tr
ied two instruments with the same results. " =0A=0ANow you say:=C2- "Well
I did some trouble shooting and now I have confirmed I have a faulty instr
ument and the sending units are good."=0A=0AI'm just curious as to what has
changed.=C2- =0A=0AI have not seen any of these parts yet... but accordi
ng to sources, the cockpit display is merely some switching diodes, and som
e lamp drivers.=C2- A good Avionics Tech might have some luck with it mer
ely by ringing out some components.=C2- Easy to say... I've never done it
.=C2- =0A=0AI'm not yet ready to tackle this project, but I am working to
wards it.=C2- Sorry to not be able to be of more help. =0A=0AMark Bitterl
ich=0A=0A=C2-=0A=0A=0A=0A________________________________=0AFrom: Stephen
Morrey <stephenmorrey@gmail.com>=0ATo: "yak-list@matronics.com" <yak-list@
matronics.com>=0ASent: Monday, May 25, 2009 8:54:22 PM=0ASubject: Re: Yak-L
ist: Re: yak 52 fuel instrument=0A=0A=0AWell I did some trouble shooting an
d now I have confirmed I have a faulty instrument and the sending units are
good. Does anyone have any suggestions on trouble shooting the instrument
(right side) or perhaps someone knows where I can get a good instrument. St
eve.=C2-=0A=0ASent from my iPhone=0A=0AOn May 25, 2009, at 8:29 PM, Yak P
ilot <yakplt@yahoo.com> wrote:=0A=0A=0AFor anyone following this string
.. =0A=C2-=0AI=99ve looked at Rob=99s diagrams and sche
matics and think that he is absolutely on the right sheet of music on how t
his system works.=C2- I thought it was all phase related (I.E. Analog in
nature) =C2-and not any kind of binary counter, in sequence or otherwise.
=C2-=C2- After looking at Rob=99s work I have to conclude that I
am totally wrong with my assumptions and Rob=99s theory of operation
is exactly right.=C2- Nice work Rob.=C2- Really first class. =0A=C2-
=0AMark Bitterlich=0A=0A=0A=0A=0A________________________________=0AFrom: R
ob Rowe <yak-list@robrowe.plus.com>=0ATo: yak-list@matronics.com=0ASent: Mo
nday, May 25, 2009 10:30:32 AM=0ASubject: Yak-List: Re: yak 52 fuel instrum
com>=0A=0AMark,=0A=0AI'll email you a later version of my schematic with th
e (2006) error corrected.=0A=0AYou may have read too much into my last post
. I didn't say it was a progressive binary sequence, just that there could
be a unique logic combination per discrete fuel level.=0A=0ATo that end I'v
e created a logic state table (PDF attached - I'll email you a copy too) th
at weights the secondary coils by their individual in/anti-phase winding ra
tios. =0A=0ABy arbitrarily multiplying this logic weighted ratio by 50 to m
ake the numbers easier to interpret, the result is a close approximation of
the fuel display readings (within +/- 4% until =0A=0A=0A=0A=0ARead this to
pic online here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=245255#
245255=0A=0A=0A=0A=0AAttachments: =0A=0Ahttp://forums.matronics.com//files/
fuel_display_logic_table_147.pdf=0A=0A=0A=0A href="http://www.matronics.
com/Navigator?Yak-List">http://www.matronics.com/Navigator?Yak-Listhref="
http://forums.matronics.com">http://forums.matronics.com href="http://ww
w.matronics.com/contribution">http://www.matronics.com/contribution =0A
=======
Message 14
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| Subject: | Re: spark plug gapping (new questions) |
Doug & Mike:
NO!!!
That is not a gapping tool. It is simply a gauge. Do not attempt to change
the gap by applying any pressure to the center electrode. This can crack the
porcelain insulator.
Walt
----- Original Message -----
From: "skidmk" <skidmk@gmail.com>
Sent: Monday, May 25, 2009 5:01 PM
Subject: Yak-List: Re: spark plug gapping (new questions)
>
> yep did that, what if its too loose?
>
> --------
> Mike "Skidmk" Bourget
> Ottawa, Ontario
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=245328#245328
>
>
>
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