If it is on the pipe on the ground, then the pipe will hold it back in the air, not letting it rev much higher than what the pipe is set at. If the pipe is way too short, then it may never get on the pipe even in the air though. A smaller prop is sometimes used to get the air rpm matched on the ground and then the larger flying prop put on to fly. A higher pitch prop can unload 3,000 rpm in the air . .which would make the pipe want to be shorter than if it was peaked on the ground..If the pipe is shorter yet, then a dive would bring it on to the pipe, maybe getting much over the 3,000 rpm. Of course if throttled down, it would have to start over. Experimenting is a good thing, and the only way.Trimming prop tips etc. Isn't F3B winch gliders?
Last edited by aspeed; 09-12-2016 at 04:26 PM.