Dwayne,
I'd always flown Fox 35's after I moved up from half A airplanes, but needed an engine for a Goldberg Shoestring stunter I was building. The price was right, so I bought one of those McCoy 35 Red Head engines instead. I didn't know enough then to run it on only high Castor oil content fuel, and think I wore it out on the first day of flying! It absolutely refused to start when hot, after that first weekend! Unfortunately, I figure nined it into the concrete not long after, and that put it out of it's misery.
The Fox 35's that I flew before and after the McCoy RH took forever to break-in, using standard (read cheap) LHS fuel. They would not hold a two cycle setting without sagging, until many hours of run time were accumulated. The slow careful break-in was probably what saved my Fox engines, because they seemed to last forever (or until the next figure nine), even on that low oil content fuel.
Still love the great looks of those old square case McCoy Red Heads, and eventually found one in nice condition to replace my original. It's just as great looking as my original, so I satisfy myself just admiring it, but have no intention of running it even though it has great compression.
Now I'm told that using 29 percent Castor oil fuel from the very first start, usually produces a great running Stunt engine. Wish I'd known that back then.
Anyway, enjoy yours, and hopefully it will give you many happy hours of flying time!
Bill (Admiring my beautiful McCoy 35 Red Head)
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