RE: McCoy engines
Hank:
You should have no trouble at all bringing the 60s back to life. Frank Bowman can make the rings for you if you don't want to make your own, the rod can be rebushed, and the bearings are standard. You might find the rotary valve a little loose, but a light tap on the pivot pin usually corrects that.
The 29 Red Head came in both a ringed and a lapped piston version. The lapped version was faster than the ringed engine, the one I still have is a lapped piston. At the time we called it a "Slug" piston.
I had several of the McCoy "Sportsman" engines also. Two rear rotary "S" engines powered my very first twin, or maybe I should say underpowered it. Not that the Macs were weak, the plane was supposed to have a pair of 29 engines. But I had two 19s.
One of the nicest sport engines I had back in the 50s was a Sportsman 29. It was rear rotary also, but the rear cover was cast in one piece with the case, and the carb angled up about 45 degrees, like the Dooling 61 did.
The only "Small" McCoy I had was an 0.09, and I had the Testor's "Senior 09" stunt plane for it. Never finished the plane, sold the engine a few years ago.
The later Testor's engines may well have been better than the early ones, I was buying and tossing them in 1960 and 61. I was also in the USAF at the time. Went back to SE Asia before the '62 summer season, so I was out of it for a while.
Bill.