Ok DesertPig,
I just had to chime in here. We ( club members) reciently purchased 5 WeedEater (poulan) brand 25cc leafblowers from Poulan's discount store at the factory ( 37.50 ea. plus shipping 9.00). Of these motors two have been at the field flying within a week. My Ultimate bipe flys great (no 3D but I am hoping, lol) as does a Robin Hood a fellow club member has. One more is waiting for a plane to be completed but is running very well on the test stand. One...well.....his wife wouldnt let him convert it until he had finished using it this fall on the front yard. Another did burn up...........kind of my fault. We removed the choke arm.....kind of forgot to remove the coil spring to.....sucked it right up and.....well.........sorry about that Mike.[:@] But it had been running very dependably on the test stand for several days. The conversion was very very easy. Another of our members is a retired machinist and he made the prop spacers in his basment. Even without the nicely made space just about any type of spacer would work, you just need to move the prop out, no threads to fiddle with. The treads for the prop are only at the end of the shaft and that is exactly the same length as most "Comercial" RC Gassers.The motor mounts for these engines are rediculasly simple (ok, so I can spell that word without a spellchecker)and the stock muffler works just fine if you bore out the outlet hole. The actual arm for the throttle on the leafblower works fine to hook your servo linkage to as it is swinging in the right direction and after filing it down on one side and drilling a hole it hooked right up. I took it up the other day along with a fellow club member who has a G26 on his bipe. The performace was the same. He was impressed ( ok, he was impressed by the engine, not my flying.......grrr) Ok, My point here? For 46.50 I have a wonderfly flying CG Ultimate bipe (Thanks again Mike for giving that to me, good thing you did before I blew up your engine) with a dependable gas motor. And I would like you to know, it starts easy, runs good, very dependable. Very good throttle range. No deadsticks. I have been flying it every day the last two weeks since we got them. ( took me two hours to convert, three tanks of gas to break it in on the ground and many many test and tune flights, but that was fun) I see your point DesterPig, I am not bashing you. But Just thought I would point out, there are many people who fly gassers and have had a great time with them. This forum is for those few that have had trouble and need help.