Today's Message Index:
----------------------
1. 06:05 AM - Prop not turning (hammerhead)
2. 06:21 AM - Re: Prop not turning (Eric Wobschall)
3. 07:04 AM - Re: Prop not turning (T A LEWIS)
4. 07:25 AM - FW: Prop not turning (Hans Oortman)
5. 07:42 AM - Re: Prop not turning (Yak Pilot)
6. 09:02 AM - Re: Prop not turning (Hans Oortman)
7. 09:14 AM - Re: Prop not turning (A. Dennis Savarese)
8. 09:17 AM - Re: Prop not turning (A. Dennis Savarese)
9. 09:36 AM - CJ Gear mishap prevention (Elmar Hegenauer)
10. 09:44 AM - Re: Prop not turning (Hans Oortman)
11. 10:21 AM - Re: Prop not turning (Yak Pilot)
12. 10:25 AM - Re: Pre Heaters (Roger Kemp M.D.)
13. 01:11 PM - Re: Prop not turning (Eric Wobschall)
14. 01:11 PM - Re: Prop not turning (Eric Wobschall)
15. 05:36 PM - Re: Pre Heaters (Richard.Goode)
16. 05:41 PM - Re: Pre Heaters (Eric Wobschall)
17. 07:08 PM - Re: CJ6 gear collapse in Ontario (Vic)
Message 1
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| Subject: | Prop not turning |
Hello all. I am a fairly new owner of a Yak-52 and I don't have much experience
with the internals of it yet. This is my first winter season. My plan was to
fly regularly during the winter so I haven't done anything to conserve the engine
during the cold, below 0 C, winter we get here in Scandinavia. Anyway, since
the cold weather arrived I just can't get the starter to turn the prop. With
the air on I push the starter, but all I hear is a humming, hizzing noise. I
have heard this noise before once when I forgot to turn the main air valve on.
Nothing happens except for that sound. Does anybody have a suggestion as to
what I could try or look for to get the starter to work? I will try leaving the
heater on for more than a few hours the next time, but in the meantime it would
be interesting to find out the steps that happens (or should happen) internally
when the start button is pushed? I have looked at the schematics over the
air system, but it is a static view that doesn't seem to help me right now.
Regards, Henrik
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327870#327870
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| Subject: | Re: Prop not turning |
Henrik:
First, I'm assuming the engine is pre-heated to above 5 degrees C (preferably more
like 12), and you've pulled the prop through, etc.
The buzzing is the shower of sparks. If you're not getting a "pop" noise before
the hissing, then the air valve isn't opening for some reason. If you're not
clearing out the snot valve after each flight, the mixture of glycerine, oil blow-by
and condensate can freeze things in the air system. If the plane can be
warmed in a hangar, I think I'd try that first.
-Eric
On Jan 22, 2011, at 9:01 AM, hammerhead wrote:
>
> Hello all. I am a fairly new owner of a Yak-52 and I don't have much experience
with the internals of it yet. This is my first winter season. My plan was to
fly regularly during the winter so I haven't done anything to conserve the engine
during the cold, below 0 C, winter we get here in Scandinavia. Anyway, since
the cold weather arrived I just can't get the starter to turn the prop. With
the air on I push the starter, but all I hear is a humming, hizzing noise.
I have heard this noise before once when I forgot to turn the main air valve
on. Nothing happens except for that sound. Does anybody have a suggestion as to
what I could try or look for to get the starter to work? I will try leaving
the heater on for more than a few hours the next time, but in the meantime it
would be interesting to find out the steps that happens (or should happen) internally
when the start button is pushed? I have looked at the schematics over
the air system, but it is a static view that doesn't s!
> eem to help me right now.
>
> Regards, Henrik
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=327870#327870
>
>
>
>
>
>
>
>
>
>
Message 3
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| Subject: | Re: Prop not turning |
Hi Henrik,
The very first thing You should check is the condition
of the batteries . The start valve needs a lot if current to open .
The spark vibrator is on the same circuit . This means you must
have good batteries for both of these to work properly at the same time .
Terry
----- Original Message ----
From: hammerhead <henrik.andoff@had.se>
Sent: Sat, January 22, 2011 9:01:51 AM
Subject: Yak-List: Prop not turning
Hello all. I am a fairly new owner of a Yak-52 and I don't have much experience
with the internals of it yet. This is my first winter season. My plan was to fly
regularly during the winter so I haven't done anything to conserve the engine
during the cold, below 0 C, winter we get here in Scandinavia. Anyway, since the
cold weather arrived I just can't get the starter to turn the prop. With the air
on I push the starter, but all I hear is a humming, hizzing noise. I have heard
this noise before once when I forgot to turn the main air valve on. Nothing
happens except for that sound. Does anybody have a suggestion as to what I could
try or look for to get the starter to work? I will try leaving the heater on for
more than a few hours the next time, but in the meantime it would be interesting
to find out the steps that happens (or should happen) internally when the start
button is pushed? I have looked at the schematics over the air system, but it is
a static view that doesn't s!
eem to help me right now.
Regards, Henrik
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=327870#327870
Message 4
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| Subject: | FW: Prop not turning |
Henrik,
This is not a big problem. Assuming the following is ok:
Outside airtemp 5 degrees C or higher, otherwise I advise to pre warm the
engine one way or the other.
Battery voltage is OK, i.e. 24v. If you push the button and you don=B9t see
the control lights go out one may assume that that is OK.
Ait bottle filled at 45 bars min and air valve open.
If the things above are all OK I suggest the following:
Close the air valve.
Make sure electrical power is shut off and brakes are on.
Check both mag switches are OFF.
Now do the following:
Make sure nobody comes in the area of the propellor.
On the left side of the ruddercontrol, inside the cockpit against the fire
wall, you will notice a valve.
This valve controls the air to the air distributor which makes the prop
turn.
On the right side of the valve you will notice a small spoon like nipple.
Use a stick or something, or if you lucky and small enought you can touch i
t
with you hands, to move this little spoon up and down.
This will manually activate the air to the airdistributor, that is why you
have to make sure there is nobody in the prop area, beause the prop will
turn,just a little, but it will turn.
If it has done that, start the engine with the normal procedure.
Sometimes, when it is cold, it may happen that this valve gets a bit stuck.
Please do me favour: makes sure both mag switches and the power are switche
d
of....otherwise...wll you know what may happen....
Let me know how it went.
Hans
RA3326K
Netherlands
------ Einde van doorgestuurd bericht
Message 5
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| Subject: | Re: Prop not turning |
If you hear buzzing then you have a battery that is at least alive. Next time
you try to start, look at your voltmeter/ammeter gage. When you push in the button
it reads volts. Push the button in and read the voltage. It should be
close to 24 volts. While holding the button in, hit the starter. If the voltage
drops down to 19 volts or so, your batteries need charge, or replacment. If
you replace them, always replace both at the same time, assuming you have already
replaced the stock battery.
Next. I assume you have pulled the prop through a WHOLE bunch on a cold engine
and that you have gotten every bit of oil out of it while doing so. If this
has been done and the engine still does not rotate, then you are either not getting
air or water is frozen in a line.
The electrical starter valve on a YAK 52 is ... as I remember it (I own a YAK-50
and not a 52) down by your left foot. Get your head down in there and find
it. It will be a round cylinder about 6-8 inches long almost gold in color and
it will have an air line hooked to the top and the bottom of it. Also an electrical
cannon plug in the top or bottom third of it. FIND THIS. Now see if
it has a small little metal tab/lever sticking out of it. This is the MANUAL
LEVEL to actuate this valve.
Open your main air valve, make sure your main air pressure is 40-50 bars, and then
clear the prop. Leave the mags OFF. Now push on this lever. If the prop
suddenly starts turning, you have found your problem.
If the valve works manually but not electrically, you can try cleaning it by taking
off the top air line and spraying WD-40 down in there to clean it out, but
this is typically only a temp. fix. Better to replace it. Be aware that a
CJ-6 uses the exact same valve. Not ALMOST the same, it uses the EXACT same valve.
See Doug Sapp.
If THIS does not work... I.E. the engine still does not turn, now you really have
a headache on your hands. Let's not go there. The first thing is to really
get that airplane in a heated hangar and see if it will then work. If it STILL
fails, then you need to start finding out why air is not getting to your starter
distributor on the engine. This kind of detail is not necessary unless
you really get to that point.
The most likely thing is that the starter valve is not opening. By using the manual
lever on the side of it to manually open it, you will be able to prove that
quickly.
Mark Bitterlich
--- On Sat, 1/22/11, hammerhead <henrik.andoff@had.se> wrote:
> From: hammerhead <henrik.andoff@had.se>
> Subject: Yak-List: Prop not turning
> To: yak-list@matronics.com
> Date: Saturday, January 22, 2011, 9:01 AM
> "hammerhead" <henrik.andoff@had.se>
>
> Hello all. I am a fairly new owner of a Yak-52 and I don't
> have much experience with the internals of it yet. This is
> my first winter season. My plan was to fly regularly during
> the winter so I haven't done anything to conserve the engine
> during the cold, below 0 C, winter we get here in
> Scandinavia. Anyway, since the cold weather arrived I just
> can't get the starter to turn the prop. With the air on I
> push the starter, but all I hear is a humming, hizzing
> noise. I have heard this noise before once when I forgot to
> turn the main air valve on. Nothing happens except for that
> sound. Does anybody have a suggestion as to what I could try
> or look for to get the starter to work? I will try leaving
> the heater on for more than a few hours the next time, but
> in the meantime it would be interesting to find out the
> steps that happens (or should happen) internally when the
> start button is pushed? I have looked at the schematics over
> the air system, but it is a static view that doesn't s!
> eem to help me right now.
>
> Regards, Henrik
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=327870#327870
>
>
>
>
>
>
>
> Forum -
> FAQ,
> - MATRONICS WEB FORUMS -
> List Contribution Web Site -
> -Matt
> Dralle, List Admin.
>
>
>
>
Message 6
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| Subject: | Re: Prop not turning |
Mark,
I have given him the same procedure....quite frankly I had exactly the same
problem yesterday when I wanted to fly my Yak52 even at +6 degrees C.
Hans
RA3326K
Op 22-01-11 16:33, Yak Pilot <yakplt@yahoo.com> schreef:
>
> If you hear buzzing then you have a battery that is at least alive. Next time
> you try to start, look at your voltmeter/ammeter gage. When you push in the
> button it reads volts. Push the button in and read the voltage. It should be
> close to 24 volts. While holding the button in, hit the starter. If the
> voltage drops down to 19 volts or so, your batteries need charge, or
> replacment. If you replace them, always replace both at the same time,
> assuming you have already replaced the stock battery.
>
> Next. I assume you have pulled the prop through a WHOLE bunch on a cold
> engine and that you have gotten every bit of oil out of it while doing so. If
> this has been done and the engine still does not rotate, then you are either
> not getting air or water is frozen in a line.
>
> The electrical starter valve on a YAK 52 is ... as I remember it (I own a
> YAK-50 and not a 52) down by your left foot. Get your head down in there and
> find it. It will be a round cylinder about 6-8 inches long almost gold in
> color and it will have an air line hooked to the top and the bottom of it.
> Also an electrical cannon plug in the top or bottom third of it. FIND THIS.
> Now see if it has a small little metal tab/lever sticking out of it. This is
> the MANUAL LEVEL to actuate this valve.
>
> Open your main air valve, make sure your main air pressure is 40-50 bars, and
> then clear the prop. Leave the mags OFF. Now push on this lever. If the
> prop suddenly starts turning, you have found your problem.
>
> If the valve works manually but not electrically, you can try cleaning it by
> taking off the top air line and spraying WD-40 down in there to clean it out,
> but this is typically only a temp. fix. Better to replace it. Be aware that
> a CJ-6 uses the exact same valve. Not ALMOST the same, it uses the EXACT same
> valve. See Doug Sapp.
>
> If THIS does not work... I.E. the engine still does not turn, now you really
> have a headache on your hands. Let's not go there. The first thing is to
> really get that airplane in a heated hangar and see if it will then work. If
> it STILL fails, then you need to start finding out why air is not getting to
> your starter distributor on the engine. This kind of detail is not necessary
> unless you really get to that point.
>
> The most likely thing is that the starter valve is not opening. By using the
> manual lever on the side of it to manually open it, you will be able to prove
> that quickly.
>
> Mark Bitterlich
>
>
> --- On Sat, 1/22/11, hammerhead <henrik.andoff@had.se> wrote:
>
>> From: hammerhead <henrik.andoff@had.se>
>> Subject: Yak-List: Prop not turning
>> To: yak-list@matronics.com
>> Date: Saturday, January 22, 2011, 9:01 AM
>> "hammerhead" <henrik.andoff@had.se>
>>
>> Hello all. I am a fairly new owner of a Yak-52 and I don't
>> have much experience with the internals of it yet. This is
>> my first winter season. My plan was to fly regularly during
>> the winter so I haven't done anything to conserve the engine
>> during the cold, below 0 C, winter we get here in
>> Scandinavia. Anyway, since the cold weather arrived I just
>> can't get the starter to turn the prop. With the air on I
>> push the starter, but all I hear is a humming, hizzing
>> noise. I have heard this noise before once when I forgot to
>> turn the main air valve on. Nothing happens except for that
>> sound. Does anybody have a suggestion as to what I could try
>> or look for to get the starter to work? I will try leaving
>> the heater on for more than a few hours the next time, but
>> in the meantime it would be interesting to find out the
>> steps that happens (or should happen) internally when the
>> start button is pushed? I have looked at the schematics over
>> the air system, but it is a static view that doesn't s!
>> eem to help me right now.
>>
>> Regards, Henrik
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=327870#327870
>>
>>
>>
>>
>>
>>
>>
>> Forum -
>> FAQ,
>> - MATRONICS WEB FORUMS -
>> List Contribution Web Site -
>> -Matt
>> Dralle, List Admin.
>>
>>
>>
>>
>
>
>
>
>
Message 7
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| Subject: | Re: Prop not turning |
Henrik,
The problem is the air start valve in front of your left foot on the
back side of the firewall is sticking. You may try energizing the air
start valve manually with the small tab on the right side of the valve.
When you lift it, the air start valve is opened manually instead of
electrically as is done when you press the start button. The only way
to fix this problem is to remove the air start valve from the back side
of the firewall and either replace it or possibly clean out the junk
that has accumulated inside the plunger section.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (cell)
Skype: Yakguy1
www.yak-52.com
On 1/22/2011 8:01 AM, hammerhead wrote:
> --> Yak-List message posted by: "hammerhead"<henrik.andoff@had.se>
>
> Hello all. I am a fairly new owner of a Yak-52 and I don't have much experience
with the internals of it yet. This is my first winter season. My plan was to
fly regularly during the winter so I haven't done anything to conserve the engine
during the cold, below 0 C, winter we get here in Scandinavia. Anyway, since
the cold weather arrived I just can't get the starter to turn the prop. With
the air on I push the starter, but all I hear is a humming, hizzing noise.
I have heard this noise before once when I forgot to turn the main air valve
on. Nothing happens except for that sound. Does anybody have a suggestion as to
what I could try or look for to get the starter to work? I will try leaving
the heater on for more than a few hours the next time, but in the meantime it
would be interesting to find out the steps that happens (or should happen) internally
when the start button is pushed? I have looked at the schematics over
the air system, but it is a static view that doesn't
s!
> eem to help me right now.
>
> Regards, Henrik
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=327870#327870
>
>
Message 8
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| Subject: | Re: Prop not turning |
Eric,
You're correct about the buzzing. But the air start valve is hanging
up. Easy to figure out by moving the little tab on the side of the air
start valve to open the valve manually. Most likely this is the culprit
and happens frequently in cold weather due to the gunk inside the valve
the builds up over the years.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (cell)
Skype: Yakguy1
www.yak-52.com
On 1/22/2011 8:18 AM, Eric Wobschall wrote:
> --> Yak-List message posted by: Eric Wobschall<eric@buffaloskyline.com>
>
> Henrik:
>
> First, I'm assuming the engine is pre-heated to above 5 degrees C (preferably
more like 12), and you've pulled the prop through, etc.
>
> The buzzing is the shower of sparks. If you're not getting a "pop" noise before
the hissing, then the air valve isn't opening for some reason. If you're not
clearing out the snot valve after each flight, the mixture of glycerine, oil
blow-by and condensate can freeze things in the air system. If the plane can
be warmed in a hangar, I think I'd try that first.
>
> -Eric
>
>
> On Jan 22, 2011, at 9:01 AM, hammerhead wrote:
>
>> --> Yak-List message posted by: "hammerhead"<henrik.andoff@had.se>
>>
>> Hello all. I am a fairly new owner of a Yak-52 and I don't have much experience
with the internals of it yet. This is my first winter season. My plan was
to fly regularly during the winter so I haven't done anything to conserve the
engine during the cold, below 0 C, winter we get here in Scandinavia. Anyway,
since the cold weather arrived I just can't get the starter to turn the prop.
With the air on I push the starter, but all I hear is a humming, hizzing noise.
I have heard this noise before once when I forgot to turn the main air valve
on. Nothing happens except for that sound. Does anybody have a suggestion as
to what I could try or look for to get the starter to work? I will try leaving
the heater on for more than a few hours the next time, but in the meantime it
would be interesting to find out the steps that happens (or should happen) internally
when the start button is pushed? I have looked at the schematics over
the air system, but it is a static view that doesn'
t!
> s!
>> eem to help me right now.
>>
>> Regards, Henrik
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=327870#327870
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
Message 9
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| Subject: | CJ Gear mishap prevention |
Hi again,
since years I am working on ideas
to make the gear on my CJ safer
and more reliable.
Since appr. 6 years I have a
radar induced gear up warning system
http://www.magnalabs.com/gearalert/aci.php
installed and now I am working on a
Squat-Switch system, what would prevent
inadvertent gear retraction on the ground.
Terry thank you very much for your input
today. The next time I have my actuators
apart I will send you some pictures of my
ball-lock modification.
cheers
Elmar
Message 10
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| Subject: | Re: Prop not turning |
Mark,
I have given him the same procedure....quite frankly I had exactly the same
problem yesterday when I wanted to fly my Yak52 even at +6 degrees C.
Hans
RA3326K
Op 22-01-11 16:33, Yak Pilot <yakplt@yahoo.com> schreef:
>
> If you hear buzzing then you have a battery that is at least alive. Next time
> you try to start, look at your voltmeter/ammeter gage. When you push in the
> button it reads volts. Push the button in and read the voltage. It should be
> close to 24 volts. While holding the button in, hit the starter. If the
> voltage drops down to 19 volts or so, your batteries need charge, or
> replacment. If you replace them, always replace both at the same time,
> assuming you have already replaced the stock battery.
>
> Next. I assume you have pulled the prop through a WHOLE bunch on a cold
> engine and that you have gotten every bit of oil out of it while doing so. If
> this has been done and the engine still does not rotate, then you are either
> not getting air or water is frozen in a line.
>
> The electrical starter valve on a YAK 52 is ... as I remember it (I own a
> YAK-50 and not a 52) down by your left foot. Get your head down in there and
> find it. It will be a round cylinder about 6-8 inches long almost gold in
> color and it will have an air line hooked to the top and the bottom of it.
> Also an electrical cannon plug in the top or bottom third of it. FIND THIS.
> Now see if it has a small little metal tab/lever sticking out of it. This is
> the MANUAL LEVEL to actuate this valve.
>
> Open your main air valve, make sure your main air pressure is 40-50 bars, and
> then clear the prop. Leave the mags OFF. Now push on this lever. If the
> prop suddenly starts turning, you have found your problem.
>
> If the valve works manually but not electrically, you can try cleaning it by
> taking off the top air line and spraying WD-40 down in there to clean it out,
> but this is typically only a temp. fix. Better to replace it. Be aware that
> a CJ-6 uses the exact same valve. Not ALMOST the same, it uses the EXACT same
> valve. See Doug Sapp.
>
> If THIS does not work... I.E. the engine still does not turn, now you really
> have a headache on your hands. Let's not go there. The first thing is to
> really get that airplane in a heated hangar and see if it will then work. If
> it STILL fails, then you need to start finding out why air is not getting to
> your starter distributor on the engine. This kind of detail is not necessary
> unless you really get to that point.
>
> The most likely thing is that the starter valve is not opening. By using the
> manual lever on the side of it to manually open it, you will be able to prove
> that quickly.
>
> Mark Bitterlich
>
>
> --- On Sat, 1/22/11, hammerhead <henrik.andoff@had.se> wrote:
>
>> From: hammerhead <henrik.andoff@had.se>
>> Subject: Yak-List: Prop not turning
>> To: yak-list@matronics.com
>> Date: Saturday, January 22, 2011, 9:01 AM
>> "hammerhead" <henrik.andoff@had.se>
>>
>> Hello all. I am a fairly new owner of a Yak-52 and I don't
>> have much experience with the internals of it yet. This is
>> my first winter season. My plan was to fly regularly during
>> the winter so I haven't done anything to conserve the engine
>> during the cold, below 0 C, winter we get here in
>> Scandinavia. Anyway, since the cold weather arrived I just
>> can't get the starter to turn the prop. With the air on I
>> push the starter, but all I hear is a humming, hizzing
>> noise. I have heard this noise before once when I forgot to
>> turn the main air valve on. Nothing happens except for that
>> sound. Does anybody have a suggestion as to what I could try
>> or look for to get the starter to work? I will try leaving
>> the heater on for more than a few hours the next time, but
>> in the meantime it would be interesting to find out the
>> steps that happens (or should happen) internally when the
>> start button is pushed? I have looked at the schematics over
>> the air system, but it is a static view that doesn't s!
>> eem to help me right now.
>>
>> Regards, Henrik
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=327870#327870
>>
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Message 11
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| Subject: | Re: Prop not turning |
Hans, I wrote mine before I read yours. :-)
The actual starter valve probably has just a small amount of moisture in it that
froze.
Thanks,
Mark
--- On Sat, 1/22/11, Hans Oortman <pa3arw@euronet.nl> wrote:
> From: Hans Oortman <pa3arw@euronet.nl>
> Subject: Re: Yak-List: Prop not turning
> To: yak-list@matronics.com
> Date: Saturday, January 22, 2011, 12:00 PM
> Hans Oortman <pa3arw@euronet.nl>
>
> Mark,
>
> I have given him the same procedure....quite frankly I had
> exactly the same
> problem yesterday when I wanted to fly my Yak52 even at +6
> degrees C.
>
> Hans
> RA3326K
>
>
>
>
> Op 22-01-11 16:33, Yak Pilot <yakplt@yahoo.com>
> schreef:
>
> >
> > If you hear buzzing then you have a battery that is at
> least alive. Next time
> > you try to start, look at your voltmeter/ammeter
> gage. When you push in the
> > button it reads volts. Push the button in and
> read the voltage. It should be
> > close to 24 volts. While holding the button in, hit
> the starter. If the
> > voltage drops down to 19 volts or so, your batteries
> need charge, or
> > replacment. If you replace them, always replace
> both at the same time,
> > assuming you have already replaced the stock battery.
> >
> > Next. I assume you have pulled the prop through
> a WHOLE bunch on a cold
> > engine and that you have gotten every bit of oil out
> of it while doing so. If
> > this has been done and the engine still does not
> rotate, then you are either
> > not getting air or water is frozen in a line.
> >
> > The electrical starter valve on a YAK 52 is ... as I
> remember it (I own a
> > YAK-50 and not a 52) down by your left foot. Get
> your head down in there and
> > find it. It will be a round cylinder about 6-8
> inches long almost gold in
> > color and it will have an air line hooked to the top
> and the bottom of it.
> > Also an electrical cannon plug in the top or bottom
> third of it. FIND THIS.
> > Now see if it has a small little metal tab/lever
> sticking out of it. This is
> > the MANUAL LEVEL to actuate this valve.
> >
> > Open your main air valve, make sure your main air
> pressure is 40-50 bars, and
> > then clear the prop. Leave the mags OFF.
> Now push on this lever. If the
> > prop suddenly starts turning, you have found your
> problem.
> >
> > If the valve works manually but not electrically, you
> can try cleaning it by
> > taking off the top air line and spraying WD-40 down in
> there to clean it out,
> > but this is typically only a temp. fix. Better
> to replace it. Be aware that
> > a CJ-6 uses the exact same valve. Not ALMOST the same,
> it uses the EXACT same
> > valve. See Doug Sapp.
> >
> > If THIS does not work... I.E. the engine still does
> not turn, now you really
> > have a headache on your hands. Let's not go
> there. The first thing is to
> > really get that airplane in a heated hangar and see if
> it will then work. If
> > it STILL fails, then you need to start finding out why
> air is not getting to
> > your starter distributor on the engine. This
> kind of detail is not necessary
> > unless you really get to that point.
> >
> > The most likely thing is that the starter valve is not
> opening. By using the
> > manual lever on the side of it to manually open it,
> you will be able to prove
> > that quickly.
> >
> > Mark Bitterlich
> >
> >
> > --- On Sat, 1/22/11, hammerhead <henrik.andoff@had.se>
> wrote:
> >
> >> From: hammerhead <henrik.andoff@had.se>
> >> Subject: Yak-List: Prop not turning
> >> To: yak-list@matronics.com
> >> Date: Saturday, January 22, 2011, 9:01 AM
> >> "hammerhead" <henrik.andoff@had.se>
> >>
> >> Hello all. I am a fairly new owner of a Yak-52 and
> I don't
> >> have much experience with the internals of it yet.
> This is
> >> my first winter season. My plan was to fly
> regularly during
> >> the winter so I haven't done anything to conserve
> the engine
> >> during the cold, below 0 C, winter we get here in
> >> Scandinavia. Anyway, since the cold weather
> arrived I just
> >> can't get the starter to turn the prop. With the
> air on I
> >> push the starter, but all I hear is a humming,
> hizzing
> >> noise. I have heard this noise before once when I
> forgot to
> >> turn the main air valve on. Nothing happens except
> for that
> >> sound. Does anybody have a suggestion as to what I
> could try
> >> or look for to get the starter to work? I will try
> leaving
> >> the heater on for more than a few hours the next
> time, but
> >> in the meantime it would be interesting to find
> out the
> >> steps that happens (or should happen) internally
> when the
> >> start button is pushed? I have looked at the
> schematics over
> >> the air system, but it is a static view that
> doesn't s!
> >> eem to help me right now.
> >>
> >> Regards, Henrik
> >>
> >>
> >>
> >>
> >> Read this topic online here:
> >>
> >> http://forums.matronics.com/viewtopic.php?p=327870#327870
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> Forum -
> >> FAQ,
> >> - MATRONICS WEB FORUMS -
> >> List Contribution Web Site -
> >> -Matt
> >> Dralle, List Admin.
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
>
>
>
>
> Forum -
> FAQ,
> - MATRONICS WEB FORUMS -
> List Contribution Web Site -
> -Matt
> Dralle, List Admin.
>
>
>
>
Message 12
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No you can not retract the gear according to the RU pilot's manual.
Doc
Sent from my iPad
On Jan 21, 2011, at 8:54 AM, "ssssskippy" <ssssskippy@gmail.com> wrote:
> Just a question:
>
> When you put this kind of skis, is the gear still retractable yes or not?
>
> Thanks
>
> In France it looked like Lithuania 2 weeks ago :-)
>
> -----Message d'origine-----
> De : owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] De la part de Eric Wobschall
> Envoy : vendredi 21 janvier 2011 14:00
> : yak-list@matronics.com
> Objet : Re: Yak-List: Pre Heaters
>
> I was hoping to get one of these rigs, including the skis:
>
>
> <Photo 967.jpg>
> <Photo 944.jpg>
Message 13
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| Subject: | Re: Prop not turning |
Or it's frozen, right, Dennis?
On Jan 22, 2011, at 12:12 PM, A. Dennis Savarese wrote:
>
> Henrik,
> The problem is the air start valve in front of your left foot on the back side
of the firewall is sticking. You may try energizing the air start valve manually
with the small tab on the right side of the valve. When you lift it, the
air start valve is opened manually instead of electrically as is done when you
press the start button. The only way to fix this problem is to remove the
air start valve from the back side of the firewall and either replace it or possibly
clean out the junk that has accumulated inside the plunger section.
> Dennis
>
> A. Dennis Savarese
> 334-285-6263
> 334-546-8182 (cell)
> Skype: Yakguy1
> www.yak-52.com
>
> On 1/22/2011 8:01 AM, hammerhead wrote:
>> --> Yak-List message posted by: "hammerhead"<henrik.andoff@had.se>
>>
>> Hello all. I am a fairly new owner of a Yak-52 and I don't have much experience
with the internals of it yet. This is my first winter season. My plan was
to fly regularly during the winter so I haven't done anything to conserve the
engine during the cold, below 0 C, winter we get here in Scandinavia. Anyway,
since the cold weather arrived I just can't get the starter to turn the prop.
With the air on I push the starter, but all I hear is a humming, hizzing noise.
I have heard this noise before once when I forgot to turn the main air valve
on. Nothing happens except for that sound. Does anybody have a suggestion as
to what I could try or look for to get the starter to work? I will try leaving
the heater on for more than a few hours the next time, but in the meantime it
would be interesting to find out the steps that happens (or should happen) internally
when the start button is pushed? I have looked at the schematics over
the air system, but it is a static view that doesn't
> s!
>> eem to help me right now.
>>
>> Regards, Henrik
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=327870#327870
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
Message 14
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| Subject: | Re: Prop not turning |
Ah... makes sense.
On Jan 22, 2011, at 12:14 PM, A. Dennis Savarese wrote:
>
> Eric,
> You're correct about the buzzing. But the air start valve is hanging up. Easy
to figure out by moving the little tab on the side of the air start valve to
open the valve manually. Most likely this is the culprit and happens frequently
in cold weather due to the gunk inside the valve the builds up over the years.
> Dennis
>
> A. Dennis Savarese
> 334-285-6263
> 334-546-8182 (cell)
> Skype: Yakguy1
> www.yak-52.com
>
> On 1/22/2011 8:18 AM, Eric Wobschall wrote:
>> --> Yak-List message posted by: Eric Wobschall<eric@buffaloskyline.com>
>>
>> Henrik:
>>
>> First, I'm assuming the engine is pre-heated to above 5 degrees C (preferably
more like 12), and you've pulled the prop through, etc.
>>
>> The buzzing is the shower of sparks. If you're not getting a "pop" noise before
the hissing, then the air valve isn't opening for some reason. If you're not
clearing out the snot valve after each flight, the mixture of glycerine, oil
blow-by and condensate can freeze things in the air system. If the plane can
be warmed in a hangar, I think I'd try that first.
>>
>> -Eric
>>
>>
>> On Jan 22, 2011, at 9:01 AM, hammerhead wrote:
>>
>>> --> Yak-List message posted by: "hammerhead"<henrik.andoff@had.se>
>>>
>>> Hello all. I am a fairly new owner of a Yak-52 and I don't have much experience
with the internals of it yet. This is my first winter season. My plan was
to fly regularly during the winter so I haven't done anything to conserve the
engine during the cold, below 0 C, winter we get here in Scandinavia. Anyway,
since the cold weather arrived I just can't get the starter to turn the prop.
With the air on I push the starter, but all I hear is a humming, hizzing noise.
I have heard this noise before once when I forgot to turn the main air valve
on. Nothing happens except for that sound. Does anybody have a suggestion as
to what I could try or look for to get the starter to work? I will try leaving
the heater on for more than a few hours the next time, but in the meantime it
would be interesting to find out the steps that happens (or should happen) internally
when the start button is pushed? I have looked at the schematics over
the air system, but it is a static view that doesn'
> t!
>> s!
>>> eem to help me right now.
>>>
>>> Regards, Henrik
>>>
>>>
>>>
>>>
>>> Read this topic online here:
>>>
>>> http://forums.matronics.com/viewtopic.php?p=327870#327870
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
Message 15
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Russian Engineering at White Waltham used to have a complete set of the ski
conversion for the 52 which came as part of a job lot to me many years
ago,but I've no idea if they have sold them-but worth contacting them if
anyone is interested in a set!!
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
Im currently in Sri Lanka but this Mail is working,and my local phone is
+94 779 132 160.
----- Original Message -----
From: "Roger Kemp M.D." <viperdoc@mindspring.com>
Sent: Saturday, January 22, 2011 11:53 PM
Subject: Re: Yak-List: Pre Heaters
No you can not retract the gear according to the RU pilot's manual.
Doc
Sent from my iPad
On Jan 21, 2011, at 8:54 AM, "ssssskippy" <ssssskippy@gmail.com> wrote:
> Just a question:
>
> When you put this kind of skis, is the gear still retractable yes or not?
>
> Thanks
>
> In France it looked like Lithuania 2 weeks ago :-)
>
> -----Message d'origine-----
> De : owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] De la part de Eric Wobschall
> Envoy : vendredi 21 janvier 2011 14:00
> : yak-list@matronics.com
> Objet : Re: Yak-List: Pre Heaters
>
> I was hoping to get one of these rigs, including the skis:
>
>
> <Photo 967.jpg>
> <Photo 944.jpg>
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Message 16
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Yup.. there's also a set here in New York State.
On Jan 22, 2011, at 8:41 PM, Richard.Goode wrote:
>
> Russian Engineering at White Waltham used to have a complete set of the ski conversion
for the 52 which came as part of a job lot to me many years ago,but
I've no idea if they have sold them-but worth contacting them if anyone is interested
in a set!!
> Richard Goode Aerobatics
> Rhodds Farm
> Lyonshall
> Hereford
> HR5 3LW
> United Kingdom
>
> Tel: +44 (0) 1544 340120
> Fax: +44 (0) 1544 340129
> www.russianaeros.com
> Im currently in Sri Lanka but this Mail is working,and my local phone is +94
779 132 160.
>
>
> ----- Original Message ----- From: "Roger Kemp M.D." <viperdoc@mindspring.com>
> To: <yak-list@matronics.com>
> Sent: Saturday, January 22, 2011 11:53 PM
> Subject: Re: Yak-List: Pre Heaters
>
>
>
> No you can not retract the gear according to the RU pilot's manual.
> Doc
>
> Sent from my iPad
>
> On Jan 21, 2011, at 8:54 AM, "ssssskippy" <ssssskippy@gmail.com> wrote:
>
>> Just a question:
>>
>> When you put this kind of skis, is the gear still retractable yes or not?
>>
>> Thanks
>>
>> In France it looked like Lithuania 2 weeks ago :-)
>>
>> -----Message d'origine-----
>> De : owner-yak-list-server@matronics.com
>> [mailto:owner-yak-list-server@matronics.com] De la part de Eric Wobschall
>> Envoy : vendredi 21 janvier 2011 14:00
>> : yak-list@matronics.com
>> Objet : Re: Yak-List: Pre Heaters
>>
>> I was hoping to get one of these rigs, including the skis:
>>
>>
>> <Photo 967.jpg>
>> <Photo 944.jpg>
>
>
>
>
>
>
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> dangerous content by the Invictawiz MailScanner
> and is believed to be clean.
> http://www.invictawiz.com
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> This message has been scanned for viruses and
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> believed to be clean.
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Message 17
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| Subject: | Re: CJ6 gear collapse in Ontario |
Servus Elmar,
judging from the pictures I guess this was a full-bore gears-up landing and I believe
youve come to the same idea shown in your next posting on this forum. A
real landing gear collapse is unlikely to inflict all three legs so damage would
show either on the nose section or on one side of the plane.
There is a photo of an 18 T on the web with one main gear collapsed after landing.
The published cause was a broken or loose screw on the piston in the gear
actuator as seen in my photo on the left end. I took this photo last week after
4 years of use. During this period I never added any liquid into the pneumatic
system but certainly drained it in the first minutes after each flight. Some
effect from water condensation can be seen on the grease but there is definitely
no other corrosion on the locking balls or the sturdy spring etc. which
might endanger the function. I do believe - as some more do in this forum - that
a good grease with max. viscosity base oil in it is the best bet for safe
corrrosion protection. Any other thin oil or solvent for servicing the lines will
wash the protection away. A type of clear grease used for motorcycle chains
could be applied for rust protection and heavy grease for the locking mechanism.
If you could find a grease which is very , very hard to wipe off your fingers
- well, thats the best for the job, NLGI class 4-5 .
The pneumatic seals were lubricated with silicone grease and that was that for
4 years. Please take this warning : Dont use WD 40 on sliding surfaces - after
some time of drying this stuff forms a very sticky residue blocking any motion.
Just apply some of it on a piece of tin and test it after some weeks, it
will have transformed from oil to resin.
Now there remains the question how to protect the lines ? I am tempted to separate
all actuators and use chain spray for the lines. This leaves a sticky oily
film great for rust protection.
Sorry for posting this last topic now, it should have been in a thread some time
ago but I did not have hard facts then. But in some ways this is not quite
off-topic regarding landing gear collapses.
Cheers
Vic
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