HI,

The McCoy .35 is indeed a stunt engine but you'll hear allot of mixed opinions about it. They were very inexpensive engines and Testors (who manufactured them) wasn't the best at quality control. Every now and then I guess there were some that wouldn't run but I never had one that didn't. In fact I have 6 .35s that are all nice runners. Make sure you run all castor oil fuel in it minimum 22% oil, I run 29% myself. Low nitro 5-15% is where they're happy and a 10-6 prop is usually what you'll find works well on it. All this is assuming you have a Red Head as pictured. If you have the Black Head series 21 you have quite a boat anchor. They run well but are so heavy they make a poor choice for flying.

They've (Red Heads) been out of production since the late 60's but there seems to be a never ending supply of them on the swap forums and Ebay.