I just bought a few series 21 McCoy's nib off the bay that the seller got at an estate sale and he threw this in with the bunch it was castored tight but a little liquid wrench and the heat gun loosened it right up. I am going to dissasemble it as I am sure the rod is stuck on the wrist pin it seems to have good compression though. I was wondering if anyone had any experience with one of these engines. I am thinking about using it in a Perky for the postal contest and if it runs good maybe a Junior Lightning Streak or one of Kieth Sandberg's Challenger .15's. I am going to use an AP Yellow Jacket venturi and needle valve on it, it came with an R/C carb and a muffler but I have a Magnum .15 muffler that bolts right up and is  lot lighter. I was just wondering if anyone had any experience with one of these engines. T.J.

I just bought a few series 21 McCoy's nib off the bay that the seller got at an estate sale and he threw this in with the bunch it was castored tight but a little liquid wrench and the heat gun loosened it right up. I am going to dissasemble it as I am sure the rod is stuck on the wrist pin it seems to have good compression though. I was wondering if anyone had any experience with one of these engines. I am thinking about using it in a Perky for the postal contest and if it runs good maybe a Junior Lightning Streak or one of Kieth Sandberg's Challenger .15's. I am going to use an AP Yellow Jacket venturi and needle valve on it, it came with an R/C carb and a muffler but I have a Magnum .15 muffler that bolts right up and is  lot lighter. I was just wondering if anyone had any experience with one of these engines. T.J.

That is a very old 15 , about 30 Years old, Thunder Tiger made in Tawain, If it is in good shape it would be good on a Ringmaster jr. or the like

Randy