Today's Message Index:
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1. 06:39 AM - Re: CJ6 gear doors (A. Dennis Savarese)
2. 06:45 AM - Re: Cylinder Base Torque (George Coy)
3. 07:43 AM - Re:CJ6 gear doors (Cpayne)
4. 12:28 PM - Aerobatic Training (Thomas Smith)
Message 1
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| Subject: | Re: CJ6 gear doors |
I think the only practical way to fully cover the wheel/tire in the
wheel well would be to add an additional gear door to the inboard side
of the wheel well which closes over the open end of the tire when the
wheel is seated in the well. Extending the gear door on the gear leg
would require the lower section to move with the compression of the
strut.....a somewhat similar concept used on the Yak 52TW which have had
their own problems with the lower gear doors and also does not fully
cover the wheel/tire assembly when in the well. I would think (and
this is only my ultra conservative opinion and only worth what the
reader is paying for it :-)) a redesign of the gear door mechanism to
close over the wheel/tire assembly would be cost prohibitive for any
resulting benefit in speed or cosmetics.
Extending the lower gear door would definitely cause problems upon hard
landings as the strut compresses or on grass which has not been cut to
the level of a golf course green.
Dennis
----- Original Message -----
From: Okanogan Lew
To: yak-list@matronics.com
Sent: Saturday, December 25, 2010 11:30 PM
Subject: Yak-List: CJ6 gear doors
Guys, has anyone tried extending the lower gear door on a CJ6, so that
it totally covers the gear when closed? If so, please share your
results. Thanks in advance.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=324525#324525
Message 2
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| Subject: | Cylinder Base Torque |
I do not have experience with the CJ engines, but the M14P torques are as
follows:
TABLE WITH TORQUE REQUIREMENTS AT M-14P ENGINE
Nomenclature
Thread size
Torque
Kgfm
In. Lbs.
Propeller governor hold nuts
M8
1.3-1.7
113-147
Drain tank hold nuts and bolts
M7
.95-1.2
82-104
Signaler filter hold nuts
M5
.45-.6
39-52
Cylinder hold down nuts
M10
3.5-3.8
304-330
Magnetos hold nuts
M8
1.3-1.7
113-147
Generator adapter hold nuts
M10
2-2.5
174-217
AK-50A air compressor hold nuts
M6
.7-.9
61-78
Oil pump hold nuts
M7
.95-1.2
82-104
Fuel pump hold nuts
M7
.95-1.2
82-104
Vacuum pump drive hold nuts
M8
1.3-1.7
113-147
Air distributor hold nuts
M5
.45-.6
39-52
Air start valves
M14
2.5-3
217-260
Carburetor hold nuts
M8
1.3-1.7
113-147
Spark plugs
M14
2.5-3
217-260
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Roger Bieberdorf
Sent: Saturday, December 25, 2010 4:23 PM
Subject: Yak-List: Cylinder Base Torque
Gotta learn how to "send a message"....sorry
What is the torque for the cylinder base nut/stud combination
Does anyone have advice on how to keep them tight.....anyone using Loctite?
Which One?
Are any particular cylinders prone to leak at the base?
Thanks in advance
Roger B.
Message 3
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| Subject: | Re:CJ6 gear doors |
For what purpose would someone cover the main gear wells? If you are thinking drag
reduction I would say that there are several other spots on the CJ-6 that
would yield a better result for the time/money spent on development.
I say this because I tried it; after a couple of mangled doors that got jammed
I gave up before I broke something serious. Later I found that careful fitting
of the existing gear door covers yielded a bigger gain than I expected from covering
the well. Now I'm not saying that a gear well "slipper" such as the LoPresti
product would not help. A Reno-style "gasket" sealing around the wheel
in the well, such as on the T-6 may benefit some too.
Tuft testing I did revealed no significant turbulence downstream of the well. I
think this is due to high pressure. However there is a problem that gear doors
might help with: CO reduction by sealing the gear well against the intrusion
of exhaust gases.
Craig Payne
Message 4
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| Subject: | Aerobatic Training |
Have been half owner in a Yak 52 for about a year now, and done just a few loops
and rolls in it. Have done all the basic figures in my Citabria, as well as
flying it in two IAC contests.
Want to find someone fairly close by who can teach me the figures, especially spins,
in the Yak done to competition (IAC) standards. I live at Crossville, TN
(home of Trade-a-Plane).
I know there are the two Russian guys in Florida and Virginia, but wanted to find
someone closer. Any suggestions?
Tom Smith
thomas_csmith@yahoo.com
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