I'd say make your life a lot less painful and use a Pitts.
ORIGINAL: davesteemke
I have a Question concerning the cowl. I have a OS FS-III 1.20 4 stroke. Sideways mounted. I'm going to have to cut a small opening on the cowl for the heads to fit. But what should I do for the exhaust? I could have the exhaust facing mostly backward and cut a HUGE hole in the bottom of the cowl, or position it 90 degrees sideways (the exhaust fumes will be exiting on the left of the aircraft) and cut a small hole.This is hard to explain so bear with me....Is it alright to have the exhaust opening in the slipstream? It would be 90 degrees of where it should be. Does this offer any disadvantages? Let me know what u think, and what u've done.
Thanks 4 Your Time,
Dave