Thought some of you guys here that perhaps don't visit the Gas Engine forum would be interested in this:

http://www.rcuniverse.com/forum/gas-...ng-flight.html <--- Click here.

AV8TOR

Hi av8tor1977,

I like that split lock on your prop mount. How does that work for you? I've got a high compression conversion that I can't seem to keep the prop mount on, that might just do the trick.

That "split lock" is really not a split lock, it is the timing collar ring that holds the magnet that triggers the ignition. You can rotate it to set the timing. However, underneath that collar, I have three radially placed set screws that help with prop hub retention and to prevent any possible rotation of the prop hub itself. Then blue Loctite on the prop hub threads, let it dry over night, and it is on there until you take the radial set screws out and heat the prop hub to get it to come loose.

AV8TOR

I haven't tried three set screws plus Loctite. I thought I had the retention thing licked when I turned down the original fly wheel with the keyway, but it cracked in use.
Must not have left enough material on the hub.

I only seem to have trouble with aluminum hubs, my steel ones Loctite on just fine.

Like the idea of an adjustable magnet ring for the timing, and it might help keep the next flywheel hub together.

Thanks for the idea!