I have been working on this RCGF 10cc engine for a few weeks on the Spitfire. I rebuilt the carburetor and did a thing fixing the stripped sparky with an adapter. I got it running finally today! Decent albeit slightly high idle, nice smooth acceleration, and a powerful WOT with 5.2 lbs thrust swinging the 14x6 Master Airscrew! And then all of the sudden I couldn't get it to run. What the heck? Wait, no compression? Turns out the pressure and heat blew the stainless adapter out of the crappy metal cylinder of this first generation RCGF engine. This problem of soft metal has been addressed in the current RCGF-USA 10cc engines.
Found it finger loose. Tightening it was unsuccessful, it just kept slipping.
Stripped...
So... I have a good carb on this engine, and a good cylinder on the other that has a carb problem, I hope. I swapped the carbs, and am now using the new cylinder and crankcase Joe Nelson gave me. One of the carb flapper valve plate carb securing holes on this new engine stripped with no real force! Maybe that's why the "carb" was bad? So, I went back to the failed cylinder, pulled the flapper valve adapter, and swapped it out. The bad cylinder is now a parts farm... which I hate, so eventually will rebuild it. Went ahead and replaced the carb gasket.
So... brand new cylinder and crankcase, swapped flapper valve adapter plate, and the original good carb, installed. Got late for running an engine, so will have to wait until tomorrow. Disappointed, that orginal was running almost perfectly today! Tomorrow I hope to finally get the Spitty up and running and flight ready!
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