RE: BALSA USA 1/3 SOPWITH PUP?????
Dear SpongeBob
Zenoah G-62 turning a custom Clark 22 X 6-10 Prop. The exhaust is routed through a MAC header. The coiled, flex-line for the exhaust pipe is from B&B. The muffler is just a snuffler-type canister but doesn't hush it much. Sounds very realistic when "blipping" the throttle, especially on final approach. I use a CH "jump-start" ignition system. The engine back-plate is vibration iso-mounted.