Spent all day helping a good friend (fellow racer) drop the pan and rebearing the engine in his racecar instead of going to the flying field. As I was preparing to leave he handed me a model engine. It says McCoy 36 (not 35) on the left side and has a champion glow plug in the head . I checked to be sure it wasn't a spark plug. It is definately a glow plug. It has a threaded boss on the rear of the crankcase, but not drilled all the way thru. the venturi in front has what looks like a removeable insert, and I checked the piston at TDC and there is definately some subpiston induction going on(there is a gap). Might this be a good running engine suitable for  OTS and would a muffler work on it even though it has SPI? It looks in Great shape. Only missing the needle. Thanks in advance. What have I got here?

Hi Gordon,

Those were the forerunners to the Red Head McCoys of the late '50s and on, and were actually made by Dick McCoy.

IIRC, there were two 36s.  A Sportsman and a Super Stunt.  I have never run either one.  A frien has a .19 of that vintage (it's ringed) and it runs ina 2 cycle.  Don't know if the .36 will 4-2, I kinda doubt it, but I know it will run the wet 2 really good.  it would power a smaller OTS ship perwtty good, and they were of much better quality than the later Red Heads.

Bill <><

I guess I will find a needle , mount it to the test stand and run some Fox type fuel thru it and see what happens. It looks kinda kool with that Champion plug in it . Sorta like the spark ign engines but with out the points. Are the champions still available?

The Champion glow plugs were the "hot" ticket at one time.  They haven't been made in years.

The old McCoys were well made engines.

You didn't memtion whether it had rings, or not. The Super Stunt .36 (with rings) was a pretty good-running engine. I have two, and am thinking about a light Magician for one of them.  The Sportsman (w/o rings) was a lower-performance version, but still a decent engine.

Thanks, Ralph. 

I mentioned both engines, but didn't/couldn't remember if BOTH were ringed or not.

I knew the Super Stunt was (at least at one time!). 

Post a picture of it! It's my understanding that the Sportsman was a plain bearing version of the rear rotor racing McCoy's. The Super Stunts were front intake engines, configured about like the Enyas of that vintage (front end removeable, no backplate).

I seem to recall that the McCoy NV assembies were the same for the Super Stunt, Redhead cheapos, and the Series 21 (style-ized squarish case with fins). Also, that they were very easy to break, and generally not worth fooling around with, unless you are after authenticity. I'd measure the old spraybar and see what fits. If it's .156", with no steps, then a ST, ST clone or Randy Smith NV assembly would be great. He also makes one for Fox .35 Stunts that might fit (.125" with a step). OS has .135" diameter, and Tower Hobby has them. I really prefer Randy's (made by Henry Nelson) spraybar assemblies. 
  Steve