ORIGINAL: scratchbildr
HELP!
This engine (26EI) runs great when it runs FORWARD! It loves to run backward! In fact when it pops, it throws the prop backwards and starts right up. Several HARD flips to get to go the right way. When it runs forward, I get great response, good idle, good transition to full. No problem there.
When it pops backward though, to breaks loose the prop bolt from the shaft and spins it off, prop, spinner and all, in one piece!
Any corrections for the backwards pop? Timing? Anything?
And the prop shaft unscrewing? 10 lbs./sq.ft. torque right?
Prop hub. (gold anodized) is fine. no cracks.
Any help would be appreciated.
Hello, and welcome to RCU. My engine does the exact thing, and no matter what I changed, it would still kick back. I tried retarding the timing, and made sure I wasn't over choking. It will kick reguardless, so what I did was just put another nut on the prop shaft to keep things from spinning off. You'll feel the engine try to go back a little but it's still easy to flip it through compression.
I know how annoying it is to re-tighten the prop and spinner only to have it spin off on the next flip.[:@] Good luck.