Today's Message Index:
----------------------
1. 06:05 AM - Whiskey Compass Fix (Aubrey Price)
2. 07:38 AM - louvers (Barry Hancock)
3. 09:05 AM - Louvers for Yak 52's and CJ6's "To have or not to have" that is the question (Mark Schrick)
4. 11:46 PM - Re: Louvers for Yak 52's and CJ6's "To have or not to have" that is the question (Stuart Mackereth)
Message 1
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| Subject: | Whiskey Compass Fix |
--> Yak-List message posted by: Aubrey Price <aprice@vartec.net>
I thought some of you might find this of interest. The whiskey compass in
our YAK52 was unusable. Most of the fluid had leaked out and it was
difficult to see the compass card. I removed the compass, removed the small
screw in the back, drained what little fluid was left and unscrewed the back
of the case. It was so tight I had to use a heat shrink gun to heat the ring
before I could loosen it. The glass was yellowed so I started on a mission
to make it usable. I tried using fine buffing compound to polish the inside,
in doing that I broke the plastic partition inside. Don't worry. It is
easier to work on without the partition. Home Deport and Lowe's sale a
Plexiglas repair kit that will fix it in seconds. Even better is the glue
from places that specialize in Plexiglas. After polishing the inside I
started on the outside. The Russians used black paint on everything except a
small window. Light doesn't't penetrate black paint well. I used a mild
paint remover to loosen the paint on the Plexiglas housing. Then I used my
high-speed buffer with extra fine polishing compound to buff the outside of
the compass Plexiglas housing. I put everything back together and used warm
clear lamp oil to fill the compass. It gives better damping that kerosene or
some other liquids. I left a small bubble of air in the housing. Most
American compasses use a rubber diaphragm on the back that expands with
temperature. The Russians must not have seen a need for this. Warm oil and
the bubble should take care of expansion in the summer. I reinstalled the
compass and did a compass swing. The clear Plexiglas lets light pass
through, so I can finally see the compass card. It looks like a new one now
and works just as well.
Aubrey Price
N288Y
Message 2
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--> Yak-List message posted by: Barry Hancock <radialpower@cox.net>
On Saturday, December 13, 2003, at 11:58 PM, Yak-List Digest Server
wrote:
> PSS, I'm not flying right now due to lack of gill louvers.
I've seen 3 or 4 Yak/CJ's without the louvers and just scratched my
head. There's usually sound engineering principals behind major systems
in an airplane...right? The Russians might be, well, Russian, but they
ain't dumb. If they weren't necessary then I would think
some newer aircraft (Yak-52TW) would go without a way to control CHT.
But hey, if you only want to fly when it's warm......
Barry Hancock
Director of Operations
Red Stars, Inc.
949.300.5510
www.allredstar.com
"Communism - Lousy Politics, Great Airplanes"
Message 3
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| Subject: | Louvers for Yak 52's and CJ6's "To have or not to have" that |
is the question
--> Yak-List message posted by: "Mark Schrick" <schrick@pacbell.net>
The new Yak 52TW DOES NOT have louvers mostly due for the WWII look of the
airframe. What it does have is gills in the back of the cowling exits to act
as cowl flaps. This has worked for the 52TW and for other Russian radial
engines. The standard louvers of a Yak 52 still work better than even the
cowl flaps on a Yak 52TW. The key idea is if you have louvers....KEEP THEM
ON and maintain them often. They are important both in cold and warm
conditions.
Maintain your friction control also, if it were to loosen in flight, the
control can creep back and close the gills causing the oil temp to reach
dangerous conditions. I have seen this happen. The friction lock is critical
to precise engine temp control.
Good luck,
Mark "SHREK" Schrick
Aerostar Western Region Dealer of Yak 52TW &
Fully overhauled Yak's, "We help you meet your budget"
YAK Driver, Inc
966 Wallace Drive
San Jose, Ca 95120-1848
Hm/Fax (408) 323-5150
Cell (408) 391-6664
Email schrick@pacbell.net
Website www.YAKDRIVER.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Barry Hancock
Subject: Yak-List: louvers
--> Yak-List message posted by: Barry Hancock <radialpower@cox.net>
On Saturday, December 13, 2003, at 11:58 PM, Yak-List Digest Server
wrote:
> PSS, I'm not flying right now due to lack of gill louvers.
I've seen 3 or 4 Yak/CJ's without the louvers and just scratched my
head. There's usually sound engineering principals behind major systems
in an airplane...right? The Russians might be, well, Russian, but they
ain't dumb. If they weren't necessary then I would think
some newer aircraft (Yak-52TW) would go without a way to control CHT.
But hey, if you only want to fly when it's warm......
Barry Hancock
Director of Operations
Red Stars, Inc.
949.300.5510
www.allredstar.com
"Communism - Lousy Politics, Great Airplanes"
Message 4
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| Subject: | Louvers for Yak 52's and CJ6's "To have or not to have" |
that is the question
--> Yak-List message posted by: "Stuart Mackereth" <stuart@bramptonyork.com>
Yep, this happened to me just the other day.. the gills blew closed in
the circuit, and interestingly I noticed the CHT's shoot up into deep
red before noticing any change in the Oil Temps? And they dropped back
very quickly when reopening the gills. Preflight, preflight,
preflight...
On another note, an acquaintence had a gear up on this last weekend in
his 52 .. and he's looking for paddles (without the hub), if anyone has
anyone has any old ones lying about (after your MT upgrade, of course)
or any good prices, plz contact me off list. Tks
[I was there at the scene, and was quite amazed at how well the gear up
landing system works! No loss of control at all - and a nice shower of
sparks from the flaps!]
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Mark Schrick
Subject: Yak-List: Louvers for Yak 52's and CJ6's "To have or not to
have" that is the question
--> Yak-List message posted by: "Mark Schrick" <schrick@pacbell.net>
The new Yak 52TW DOES NOT have louvers mostly due for the WWII look of
the airframe. What it does have is gills in the back of the cowling
exits to act as cowl flaps. This has worked for the 52TW and for other
Russian radial engines. The standard louvers of a Yak 52 still work
better than even the cowl flaps on a Yak 52TW. The key idea is if you
have louvers....KEEP THEM ON and maintain them often. They are important
both in cold and warm conditions.
Maintain your friction control also, if it were to loosen in flight, the
control can creep back and close the gills causing the oil temp to reach
dangerous conditions. I have seen this happen. The friction lock is
critical to precise engine temp control.
Good luck,
Mark "SHREK" Schrick
Aerostar Western Region Dealer of Yak 52TW &
Fully overhauled Yak's, "We help you meet your budget"
YAK Driver, Inc
966 Wallace Drive
San Jose, Ca 95120-1848
Hm/Fax (408) 323-5150
Cell (408) 391-6664
Email schrick@pacbell.net
Website www.YAKDRIVER.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Barry Hancock
Subject: Yak-List: louvers
--> Yak-List message posted by: Barry Hancock <radialpower@cox.net>
On Saturday, December 13, 2003, at 11:58 PM, Yak-List Digest Server
wrote:
> PSS, I'm not flying right now due to lack of gill louvers.
I've seen 3 or 4 Yak/CJ's without the louvers and just scratched my
head. There's usually sound engineering principals behind major systems
in an airplane...right? The Russians might be, well, Russian, but they
ain't dumb. If they weren't necessary then I would think
some newer aircraft (Yak-52TW) would go without a way to control CHT.
But hey, if you only want to fly when it's warm......
Barry Hancock
Director of Operations
Red Stars, Inc.
949.300.5510
www.allredstar.com
"Communism - Lousy Politics, Great Airplanes"
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