Back before dirt, when I flew CL Stunt a lot, the Fox .35 was my favorite along with Fox Superfuel. Then I started using ST G-21 40s breathed on by George Aldrich which were excellent. Then I breathed on a couple of Fox .40 Stunt engines myself, and they were equal to the STs. One that was NOT worth a DA_N was the gray case McCoy 40 that cost me my only chance of ever qualifying in a NATs -- Glenview 1971. I got sucked into swapping out my ST for a pre-production McCoy GC 40 which was a ugly thing with K&B 4011 innards. Only had 4 flights when I went for the first official. Had a barn-burner going, I couldn't believe I could fly like that. Coming out of the last part of the 4-leaf clover that sucker went into rat-race lean for a 11 minute run. No landing or pattern points. Second flight was too rich and looked like a da_n first timer wobbling around the sky. Never got that thing to run for sour grapes. Yuck! RC took over after that. [sm=48_48.gif]

In RC I loved engines like the STs with bolt-on front cases where I could swap exhausts. This machine has two Como 61 with the turn-around engine some 500 RPM stronger than before and the other. Plane flies / flew excellent. Now waiting a rebuild after a glitch between the ears. Will do it again in not too distant future.