ORIGINAL: hsukaria
just don't be too upset if your son ends up going electric. My sons want electric only[&o]
I won't be upset, he may not like RC at all and want to quilt with momma bear. Who knows.
Earl: I agree with your break-in routine, though the subtle difference for me is not flying the engine (yet). I use extra oil and keep the engine 1000rpm rich or so, and go "play". My SuperTigres are ready for mixture-lean (300-400rpm rich) operation at about 1-1.5 gallons using Bowman rings and 1.5-2.5 gallons on stock ST rings. I guess I didn't feel I was rushing it, but perhaps I was a little hasty. Because I don't fly yet, I have to do things differently.
I don't know if anyone is interested, but I have one of the early high compression head buttons for a fox .40 small frame engine (1983). I've heard heard these were sought after by some. If anyone wants it and has a junk button to swap me, one can just have it. .840" bore I think. This engine will get traded in on the Fox .60.