Anybody Pin The Pinion?

[Robertwav1]

One time in the air started losing power. Lucky save, not too high. The grub screws came loose on the pinion. Yes, I used loctite. Re-did the screws, so far good. This past weekend the main gear screws loosened up... however, another lucky save with just a hard landing, this time I was was up 60 feet or so. Anyone have this happen? I'm thinkin' maybe I should pin this stuff. Thoughts? I'm not doin hard stuff only sport flying. The grub screws are about as tight as one can get a small allen...I really don't like them. Thanks! (It's a Gaui 425).

[torana74]

Robert, I can't say i've had a prob on the pinion. Make sure there is a flat surface on the shaft for them to sit on. Sometimes there might be a bit of oil etc on the threads and won't let the locitite work.

Have dont it on the main gear but was my fault as i hadn't perfectly lined up the shaft
notches with the grub screws.Tightened well but after a few punches,they slipped. Now when i put them in , i have one removed, look through hole, tighten the other, loctite and put the removed one in, remove other, double check,loctite,put in, happy flying

Vas

[mightymouse]

I never had this problem--what about vibration? l know loctite shouldnt slip at all. as stated before there must be some oil on there for it not to work. To be safe though I would ck for those every couple flights.

[9sec240]

I had this happen on my 425 once. I had not put a flat on the motor shaft yet. Luckily the crash was not too bad at all.


[ame]http://www.youtube.com/watch?v=d6wPOFd4Ruc[/ame]

[Robertwav1]

I guess oil could be the issue here. I hate when that happens. I'm ready to drill if it should happen again.

[mightymouse]

dude that looked ugly--I will be cking my Pin

[M.Huerta]

Just coat the shaft with red or green loctite AND use the set screws, if you ever need to take it off just heat it up with a soldering iron and it'll come right off