Stinger 20 se performance 16x6 fiberglass prop idle 3500 peak 9400 pulls my seagull models ultimate bipe from 50 feet to 400 feet in 7 seconds two flights today came home and cleaned muffler and plug and added permatex will fly again wed hopefully things will stay together for a while so i can finally put the cowl on.
My bad, after I read this post I saw the pic of the twin 40, I thought that was the engine going to the 17 x 6.
I have 4 twenties and run 17 x 6 or 16 x 8 depending on the plane. I shoot for 8300 rpm.