Today's Message Index:
----------------------
1. 05:56 AM - Re: Re: Air Leak Advice (Rico Jaeger)
2. 05:59 AM - Yak 52 Down In Indiana (Rico Jaeger)
3. 08:02 AM - Re: Re: Air Leak Advice (Bitterlich, Mark G CIV NAVAIR, WD)
4. 08:28 AM - Re: Yak 52 Down In Indiana ()
5. 08:33 AM - Re: Yak 52 Down In Indiana (Jon Blake)
6. 11:47 AM - DIFFICULT START -52 (Bill1200)
7. 04:27 PM - CJ covers for sale (Elmar & Manuela)
8. 04:37 PM - Brand-new CJ Amp/Volt gauge for sale (Elmar & Manuela)
9. 04:40 PM - YAK 52 airspeed indicator for sale (Elmar & Manuela)
10. 08:17 PM - Re: DIFFICULT START -52 (Walter Lannon)
11. 08:38 PM - Re: Air Leak Advice (AcroGimp)
Message 1
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| Subject: | Re: Air Leak Advice |
Guessing quite a few of you have heard about this already=2C but....a Yak 5
2TW went down in Indiana recently. The only video of the crash site would l
ikely indicate a very vertical=2C nose-first descent. Internet posting copi
ed below...
Search dogs have detected the body of a missing Indiana pilot in the wrecka
ge of his small airplane=2C which was found Sunday morning =97 more than a
week after the plane dropped off of radar=2C according to authorities.The Y
ak-52 airplane belonging to Glenn Foy=2C 59=2C was found in Boone County at
8:40 a.m. ET by crews with the Indiana wing of the Civil Air Patrol in Boo
ne County=2C said Civil Air Patrol Lt. Col. Tim Turner. The site of the wre
ckage is about 100 miles from Eagle Creek Airport in Indianapolis=2C where
Foy was last seen on April 3=2C Turner said.The aircraft was "impacted into
the ground=2C" and recovery crews have not been able to gain access=2C but
"we were just out there with cadaver dogs and they gave an indication that
there is likely a body in the wreckage" Turner told NBC News from the site
of the crash.Foy was not reported missing until April 6=2C Turner said. Hi
s girlfriend told authorities that it was "not uncommon for him to get in h
is plane and go flying and be gone for a day or two=2C" Turner said. At tha
t point=2C the FAA determined that the "very unique aircraft" dropped off r
adar on April 3=2C the same day he took flight=2C Turner said.The National
Transportation Safety Board is investigating the cause of the crash. "There
's nothing here that would give us any indication of what happened or why
=2C" Turner said.
Rico Jaeger
915 S. 11th Ave.
Wausau=2C WI. 54401
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //Hangar #35 / AUW
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //Hangar #21 / AUW
Message 2
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| Subject: | Yak 52 Down In Indiana |
Sorry - just re-posting this because I inadvertently sent out the original
w/ an old subject heading...
Guessing quite a few of you have heard about this already=2C but....a Yak 5
2TW went down in Indiana recently. The only video of the crash site would l
ikely indicate a very vertical=2C nose-first descent. Internet posting copi
ed below...
Search dogs have detected the body of a missing Indiana pilot in the wrecka
ge of his small airplane=2C which was found Sunday morning =97 more than a
week after the plane dropped off of radar=2C according to authorities.The Y
ak-52 airplane belonging to Glenn Foy=2C 59=2C was found in Boone County at
8:40 a.m. ET by crews with the Indiana wing of the Civil Air Patrol in Boo
ne County=2C said Civil Air Patrol Lt. Col. Tim Turner. The site of the wre
ckage is about 100 miles from Eagle Creek Airport in Indianapolis=2C where
Foy was last seen on April 3=2C Turner said.The aircraft was "impacted into
the ground=2C" and recovery crews have not been able to gain access=2C but
"we were just out there with cadaver dogs and they gave an indication that
there is likely a body in the wreckage" Turner told NBC News from the site
of the crash.Foy was not reported missing until April 6=2C Turner said. Hi
s girlfriend told authorities that it was "not uncommon for him to get in h
is plane and go flying and be gone for a day or two=2C" Turner said. At tha
t point=2C the FAA determined that the "very unique aircraft" dropped off r
adar on April 3=2C the same day he took flight=2C Turner said.The National
Transportation Safety Board is investigating the cause of the crash. "There
's nothing here that would give us any indication of what happened or why
=2C" Turner said.
Rico Jaeger
915 S. 11th Ave.
Wausau=2C WI. 54401
715.529.7426
//
1966 Cessna 150F ^/---//-X
N8558G //Hangar #35 / AUW
//
1992 Yakovlev Yak 52 ^/---//-X
N21YK //Hangar #21 / AUW
Message 3
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| Subject: | Re: Air Leak Advice |
I hope your mechanic understands how the pneumatic system works, because if he
does not .... it is going to be pretty much up to you to teach him, or hire someone
who does. It is a "mind set" that when someone hears air hissing from a
gear lever in the cockpit that they immediately assume it must be bad. This
happens a lot ...
Unless a fitting is loose, you will normally never hear air coming out of the actuators.
There is a ring seal in there that can cause that, but by and large
it is the chevron seals that go first and when they do go, they cause an internal
leak and not an external leak that you can hear. Evidence of an internal
leak is air leaking out of the gear handle with the gear either fully up, or
fully down. If there is no air leaking out the gear handle (this being done
on the deck with the aircraft on jacks) then there are no internal leaks. If
you hear air coming out of the handle, read Dennis's instructions on how to narrow
it down to exactly where.
If the crush washers are missing, the system will not pressurize.
If they are the wrong size, they could be leaking.
There are many ways to skin this cat. My PERSONAL way is to take the line off
the snot valve going to the check valves on the firewall, and then with a homemade
adapter fitting, I connect a line from a regulated tank back to the snot
valve. I am now blowing air BACKWARDS towards the compressor. Listen for leaks.
Be aware that there is a check valve in the compressor itself that can get
all gummed up that can also cause leaks. In any case, I inject air backwards
and if I hear a leak, or see "airflow" then I take the Banjo fitting off and
look everything over. Before you do that, order a few sets of new banjo fitting
aluminum crush washers. Also be aware that it is very common for the line
from the compressor to the banjo to crack. I doubt that is the case here.
ANYWAY.... before you do ALL OF THAT, do this. After you finish flying, walk away
from the aircraft for about 15-20 minutes and come back and THEN open the
snot valve. If you get no WHOOSH, then you probably have something leaking in
the above area.
Be careful not to chase Ghosts. If I run my air down to 25 Atmos's or so, it takes
about 10 min or MORE at 85% power to pump it back up, and that is with no
leaks and a new compressor. Add some age to the compressor, and those numbers
increase even further.
But if you can't REACH 50 Atmos with the gear handle up, and putting it in the
center ALLOWS it to reach 50, then yes... you've got a leak. Again, use Dennis
Savarese's procedures.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of AcroGimp
Sent: Sunday, April 12, 2015 1:42 AM
Subject: Yak-List: Re: Air Leak Advice
Update 3 - Flew a form training sortie today after the check valve overhaul, with
gear handle UP it was pumping up super slow in the air, setting gear neutral
and it pumped up to and regulated at 50 but it seemed to take maybe 15 minutes
(took off at about 30-35 Atm after a bunch of taxiing).
Mechanic suspects fwd gear handle (we had no noise from the actuators or a perceptible
leak at the gear handles in the UP position on our gear swings yesterday).
But, looking at the compressor banjo fitting he thought the crush washers
might either be missing or not right size - looked at a spare compressor with
a banjo fitting on it and definitely looks different.
When I pull the snot valve release after shutdown I get a good blow down through
the valve, sounds like other Yak's I have heard - so it seems the compressor
is putting air out, just not sure how much.
Issue seems to be engine running and gear UP - ideas?
'Gimp
--------
Owner/Pilot N6209F 1987 Yak-52
COMM/ASEL/IFR/HP-Complex/TW
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=440695#440695
Message 4
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| Subject: | Re: Yak 52 Down In Indiana |
He was Glenn Foy. I announced Ryan Patterson, Glenn, and Sean Morrey as the Red
Thunder Formation team on numerous occasions in the Ohio/Indiana region; a great
act. Glenn was a easy going, all-around super guy and first rate pilot. It
looks like he went straight in from the photo. Donna and I are saddened by the
loss of another great friend and fellow pilot.
Steve and Donna Hanshew
---- Rico Jaeger <rocknpilot@hotmail.com> wrote:
> Sorry - just re-posting this because I inadvertently sent out the original w/
an old subject heading...
> Guessing quite a few of you have heard about this already, but....a Yak 52TW
went down in Indiana recently. The only video of the crash site would likely indicate
a very vertical, nose-first descent. Internet posting copied below...
> Search dogs have detected the body of a missing Indiana pilot in the wreckage
of his small airplane, which was found Sunday morning more than a week after
the plane dropped off of radar, according to authorities.The Yak-52 airplane
belonging to Glenn Foy, 59, was found in Boone County at 8:40 a.m. ET by crews
with the Indiana wing of the Civil Air Patrol in Boone County, said Civil Air
Patrol Lt. Col. Tim Turner. The site of the wreckage is about 100 miles from
Eagle Creek Airport in Indianapolis, where Foy was last seen on April 3, Turner
said.The aircraft was "impacted into the ground," and recovery crews have not
been able to gain access, but "we were just out there with cadaver dogs and
they gave an indication that there is likely a body in the wreckage" Turner told
NBC News from the site of the crash.Foy was not reported missing until April
6, Turner said. His girlfriend told authorities that it was "not uncommon for
him to get in his plane and go flying and be gone for a day or two," Turner
said. At that point, the FAA determined that the "very unique aircraft" dropped
off radar on April 3, the same day he took flight, Turner said.The National
Transportation Safety Board is investigating the cause of the crash. "There's
nothing here that would give us any indication of what happened or why," Turner
said.
>
> Rico Jaeger
> 915 S. 11th Ave.
> Wausau, WI. 54401
> 715.529.7426
> //
> 1966 Cessna 150F ^/---//-X
> N8558G //Hangar #35 / AUW
> //
> 1992 Yakovlev Yak 52 ^/---//-X
> N21YK //Hangar #21 / AUW
>
>
>
Message 5
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| Subject: | Re: Yak 52 Down In Indiana |
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Message 6
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| Subject: | DIFFICULT START -52 |
Background:
Just replaced engine with, as far as we can tell from the Russian logs, an IRAN
engine that has been sitting for 10 years. Initially, very difficult to start,
requiring essentially constant priming to keep it turning. Replaced carburetor
with old one off prior engine I was using. Now runs well but still requires
lots of priming once it fires, for a few seconds.
Have noticed when primer knob turned to left to pressurize system, nothing is showing
on fuel pressure gage. Once started, fuel pressure normal
Thoughts?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=440793#440793
Message 7
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| Subject: | CJ covers for sale |
Hi all,
I have a set of new wing covers, a new prop
cover (no spinner) and an used empennage
cover for sale.
Asking US$805 plus shipping for the lot.
If interested, please contact me off list.
cheers
Elmar
Message 8
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| Subject: | Brand-new CJ Amp/Volt gauge for sale |
Hi again,
I also have a brand-new (very hard to
find) VA-ZAV-2 Instrument volt/amp
for sale, asking US$180 plus shipping.
If interested, please contact me off list.
cheers
Elmar
Message 9
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| Subject: | YAK 52 airspeed indicator for sale |
cleaning the house.
I have an used but in good working condition
YAK 52 (fits also the CJ) airspeed indicator for
sale, asking US$35 plus shipping.
If interested, please contact me off list.
cheers
Elmar
Message 10
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| Subject: | Re: DIFFICULT START -52 |
Chances are there is nothing wrong with your carburettor. If the engine
was inhibited for storage it is quite likely the carb. was done as well.
There is a specific process in the manual (at least for the Huosai so I
assume also in the M14 manual) to clean the oil out of it. It could take a
very long time to get it operational if that is not done.
Also check the small tube in the throat of the carb. As part of the
storage process it may be capped off with a rubber condom. If so the
diaphragm chamber does not sense atmospheric pressure and the carb. will not
function.
Not being familiar with the Yak 52 I don't know which way it turns for
priming (I would guess to the left). The CJ uses the same primer but is
plumbed to prime from either side since it has a separate emergency pump.
There would be no fuel pressure indication from priming since the fuel goes
directly into the induction system.
Walt
-----Original Message-----
From: Bill1200
Sent: Monday, April 13, 2015 11:47 AM
Subject: Yak-List: DIFFICULT START -52
Background:
Just replaced engine with, as far as we can tell from the Russian logs, an
IRAN engine that has been sitting for 10 years. Initially, very difficult to
start, requiring essentially constant priming to keep it turning. Replaced
carburetor with old one off prior engine I was using. Now runs well but
still requires lots of priming once it fires, for a few seconds.
Have noticed when primer knob turned to left to pressurize system, nothing
is showing on fuel pressure gage. Once started, fuel pressure normal
Thoughts?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=440793#440793
Message 11
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| Subject: | Re: Air Leak Advice |
Thanks again Mark. My mechanic is quite versed in the Yak, the confusion is me
a new operator.
Taking your advice today I merely set UP on the handle and left it during my formation
sortie, it pumped up to 50 and regulated just fine (I didn't time it and
it was a long flight but I noticed it was at 50 during maybe 2nd ops check
so about 20-30 minutes in) - I figure there probably was a leak with the check
valve to snot valve (with compressor going) and I was impatient last time I flew.
Thanks all for the inputs. I am sure there will be other things but I think this
issue may be closed.
'Gimp
--------
Owner/Pilot N6209F 1987 Yak-52
COMM/ASEL/IFR/HP-Complex/TW
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http://forums.matronics.com/viewtopic.php?p=440827#440827
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