RE: Sig Four Star, what mod's would you do?
Posted elsewhere.
I mounted a OS Wankel on mine. Made a round cowl, loose fitted to allow air circulation. Sure had a neat old timey radial engine look.
Great vertical performance when you goosed the throttle. Quick rev up. (Used a 9 by 5 wood prop.)
Engine is a gas hog so need larger than 8 oz tank in that skinny nose. I got a 10 inch round tank crammed in.
Tom