Today's Message Index:
----------------------
1. 03:05 AM - Re: AvMAP Ultra EFIS (Etienne Verhellen)
2. 03:20 AM - Re: AvMAP Ultra EFIS (Etienne Verhellen)
3. 11:21 AM - Re: Re: Reverse Rotation On Shutdown (Bitterlich, Mark G CIV NAVAIR, WD)
4. 11:39 AM - Re: Re: Reverse Rotation On Shutdown (Rico Jaeger)
5. 02:39 PM - Re: Re: Reverse Rotation On Shutdown (A. Dennis Savarese)
6. 06:43 PM - Re: Re: AvMAP Ultra EFIS (Roger Kemp)
Message 1
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| Subject: | Re: AvMAP Ultra EFIS |
Roger that Jan. Take care buddy.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430663#430663
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| Subject: | Re: AvMAP Ultra EFIS |
Hi Doc,
using the RMU gyro for the DYNON EFIS -D10A.
And an extra pitot tube. Static from the main.
KR, Etienne.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430664#430664
Attachments:
http://forums.matronics.com//files/image_218.jpg
Message 3
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| Subject: | Re: Reverse Rotation On Shutdown |
I believe you might have had something wrong with your carb or your engine Steve.
For you to have a fire in the carb intake as you have described, you would need
a source of ignition for the fuel. That would require a backfire through the
blower to the carb. Lots of reasons that could happen, but none them normal.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Steven A. Dalton
Sent: Tuesday, September 16, 2014 7:04 PM
Subject: Yak-List: Re: Reverse Rotation On Shutdown
As I recently sold my Yak-52TW it may be inappropriate of me to comment, but:
I owned my Yak with an M-14PF for 13 years. Without fail, EVERY time I moved the
throttle full forward at shutdown I experienced a fire in the carb intake. After
emptying a Halon bottle to stop the paint on the bottom of the cowling from
burning any further I quickly decided this was a bad idea. I NEVER had such
an experience with leaving the throttle at idle. YMMV, Batteries not included,
past performance is no guarantee of future returns....
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430643#430643
Message 4
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| Subject: | Re: Reverse Rotation On Shutdown |
As long as this thread has extended into this area...I have gone into this
Yak business acutely alert for fire issues=2C since - some of you may recal
l - the reason I got into a Yak at all was that I bought mine AFTER a catas
trophic engine fire. While I never learned the details 1st hand=2C it would
appear that it happened at start up since I had to siphon what seemed to b
e full tanks. I was told the working theory was that the flexible fuel line
going to the carb had split open=2C and with a thoroughly oil-soaked engin
e compartment=2C the blaze and burn-duration were both impressive to behold
.
As it is=2C my fuel pressure runs slightly high at higher power settings. S
hould I be worried about slightly higher pressure fatiguing a line or fitti
ng? I would hate to think this may be deja vu...
Rico Jaeger
915 S. 11th Ave.
Wausau=2C WI. 54401
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
> From: mark.bitterlich@navy.mil
> To: yak-list@matronics.com
> Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
> Date: Wed=2C 17 Sep 2014 18:20:24 +0000
>
mark.bitterlich@navy.mil>
>
> I believe you might have had something wrong with your carb or your engi
ne Steve.
>
> For you to have a fire in the carb intake as you have described=2C you wo
uld need a source of ignition for the fuel. That would require a backfir
e through the blower to the carb. Lots of reasons that could happen=2C but
none them normal.
>
> Mark
>
>
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@m
atronics.com] On Behalf Of Steven A. Dalton
> Sent: Tuesday=2C September 16=2C 2014 7:04 PM
> To: yak-list@matronics.com
> Subject: Yak-List: Re: Reverse Rotation On Shutdown
>
>
> As I recently sold my Yak-52TW it may be inappropriate of me to comment
=2C but:
>
> I owned my Yak with an M-14PF for 13 years. Without fail=2C EVERY time I
moved the throttle full forward at shutdown I experienced a fire in the car
b intake. After emptying a Halon bottle to stop the paint on the bottom of
the cowling from burning any further I quickly decided this was a bad idea.
I NEVER had such an experience with leaving the throttle at idle. YMMV=2C
Batteries not included=2C past performance is no guarantee of future return
s....
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430643#430643
>
>
>
>
>
>
>
>
>
>
>
>
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>
>
>
Message 5
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| Subject: | Re: Reverse Rotation On Shutdown |
Rico,
If you do the math on what the fuel pressure is on the fuel hoses, based on what
the fuel pressure gauge reads, you'll find the fuel pressure to be extremely
low compared to the "working" pressure of the fuel hoses.
To do the conversion, multiply whatever the instrument reading is times 14.22 to
get PSI. So if your instrument is reading "5" (which is 5 KG/Sq.CM), the fuel
pressure is approximately 71 PSI. In no way is this or even a "6" or "10"
on the fuel pressure instrument going to cause a flexible fuel hose to burst UNLESS
the hose is already deteriorated.
Over the years I have seen many, many fuel hoses deteriorated to the point where
if one were to bend or flex the hose, it would literally crack. Folks need
to understand there really was a method to the Russian madness about replacing
flexible lines every 5 (or 7) years. Just the same way they should be replaced
on our Cessnas, Pipers and Beechcraft standard category airplanes. If one
pushes the life limit of these hoses, you can be assured they will deteriorate
and ultimately fail, possibly causing serious damage or even life-threatening
situations. One of the most susceptible hoses to deterioration on the 52 is
the primer hose which is mounted on upper right side (cockpit right) of the firewall.
The hose goes all the way over to the left side of the engine and is
affixed to a fitting mounted on a bracket on the #2 intake manifold. This hose
for some reason, seems to deteriorate much faster than some of the other hoses
under the cowling at a
point just forward of the firewall. I believe this is due to there being a "heat
pocket" up in that corner of the cowling. My recommendation is every time
you open the cowl, run your hand over the primer flexible hose. If it is rough
and like sandpaper, it probably is a good idea to replace it. How do I know
this? Because it happened to me. Luckily I caught it before it became a catastrophy.
I had the cowl open and was pushing the primer when I saw fuel spraying
out of the top of this hose. Luckily I caught it before it became a disaster.
Speaking of fuel hoses deteriorating, how many folks on the List actually check
and VERIFY the fuel shut off is doing what it is suppose to do at least once
a year? Other than testing it with the engine running, do you know how to test
it without the engine running? You certainly don't want to find out you can't
shut off the fuel AFTER the fire starts.
Dennis
________________________________
From: Rico Jaeger <rocknpilot@hotmail.com>
Sent: Wednesday, September 17, 2014 1:39 PM
Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
As long as this thread has extended into this area...I have gone into this Yak
business acutely alert for fire issues, since - some of you may recall - the reason
I got into a Yak at all was that I bought mine AFTER a catastrophic engine
fire. While I never learned the details 1st hand, it would appear that it happened
at start up since I had to siphon what seemed to be full tanks. I was
told the working theory was that the flexible fuel line going to the carb had
split open, and with a thoroughly oil-soaked engine compartment, the blaze and
burn-duration were both impressive to behold.
As it is, my fuel pressure runs slightly high at higher power settings. Should
I be worried about slightly higher pressure fatiguing a line or fitting? I would
hate to think this may be deja vu...
Rico Jaeger
915 S. 11th Ave.
Wausau, WI. 54401
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //
> From: mark.bitterlich@navy.mil
> To: yak-list@matronics.com
> Subject: RE: Yak-List: Re: Reverse Rotation On Shutdown
> Date: Wed, 17 Sep 2014 18:20:24 +0000
>
>
> I believe you might have had something wrong with your carb or your engine Steve.
>
> For you to have a fire in the carb intake as you have described, you would need
a source of ignition for the fuel. That would require a backfire through
the blower to the carb. Lots of reasons that could happen, but none them normal.
>
> Mark
>
>
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Steven A. Dalton
> Sent: Tuesday, September 16, 2014 7:04 PM
> To: yak-list@matronics.com
> Subject: Yak-List: Re: Reverse Rotation On Shutdown
>
>
> As I recently sold my Yak-52TW it may be inappropriate of me to comment, but:
>
> I owned my Yak with an M-14PF for 13 years. Without fail, EVERY time I moved
the throttle full forward at shutdown I experienced a fire in the carb intake.
After emptying a Halon bottle to stop the paint on the bottom of the cowling
from burning any further I quickly decided this was a bad idea. I NEVER had such
an experience with leaving the throttle at idle. YMMV, Batteries not included,
past performance is no guarantee of future returns....
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430643#430643
>
>
>
>
>
>
>
>
>
>
Message 6
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| Subject: | Re: AvMAP Ultra EFIS |
Copy Etienne. I'm using a splitter off the original Pitot.
Do
Sent from my iPad
> On Sep 17, 2014, at 5:19 AM, Etienne Verhellen <janie@yak52.fr> wrote:
>
>
> Hi Doc,
> using the RMU gyro for the DYNON EFIS -D10A.
> And an extra pitot tube. Static from the main.
> KR, Etienne.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430664#430664
>
>
>
>
> Attachments:
>
> http://forums.matronics.com//files/image_218.jpg
>
>
>
>
>
>
>
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