Speaking of Chinese engines I recently bought a 52cc 20 in.Chinese chain saw on line, $79 shipped. brand on this one is Coocheer. So far I would say it's a strong running saw but it does require 25:1 mix which I'm guessing means the bore is not chromed..?? They call the motor 4hp and it runs strong and sounds great..would it make a decent RC motor or just waste a conversion I wonder..?????