---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Sun 12/26/10: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 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 _____________________________________ Time: 06:39:01 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: 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 _____________________________________ Time: 06:45:24 AM PST US From: "George Coy" Subject: RE: Yak-List: 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 _____________________________________ Time: 07:43:56 AM PST US From: Cpayne Subject: Yak-List: 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 _____________________________________ Time: 12:28:53 PM PST US From: Thomas Smith Subject: Yak-List: 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 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/yak-list Browse Digests http://www.matronics.com/digest/yak-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.