07-14-2018, 08:41 PM
(07-13-2018, 10:49 AM)ted johnson Wrote: Well, Dave, I know from experience that turbine aircraft engine oil is very good in clutch housings. It's expensive. When I was in Idaho, I was at the airport every weekend helping the builder's group build 13 Kitfox Series 7 airplanes. I met guys who flew jets and turboprops, and one of them gave me a couple quarts of the $30+/Qt. oil. I haven't got that connection any more. A number of guys run compressor oil with good success. Terry said to run the gear oil. I haven't heard anyone tell of experience with synthetic ATF, but I know better than to run petroleum based ATF in the clutch housing. I may well decide to run the same lube in clutch housing AND gear case. It'd be easier just to have a single oil on hand. If the humidity ever lets up, I will go out and do some trial assembly for final fitup. So far, so good. Brad Emery kindly made me a seal installation bullet so I can get the output shaft through the big ball bearing and the seal. It'll get passed around to the other guys who use the Cubel/Johnson/Bennett gear drive setup. I gave the bullet it's trial last night, and POP! right through like a champ. Now, if all the tolerances stack up right, we'll be golden. Ron Cubel did a great job of machining to my CAD output. Ted
ted, do a write up of your new clutch housing Ron made.
it would be interesting reading.
2nd
don't know if this info helps or not.
i use the synthetic in a hartman oil clutch and abuse it pretty bad.
don't change it as much as others have gone as much as two full week ends with same oil.
gets dark brown but haven't even gotten it to smell burned.
eventually when i get to using a gear box i'll try it myself.
d
Dave L.