Just completed my Sig Smith Miniplane (Skyloft covered and paint finish as N391Y, don't have photos yet).
Installed my old OS FS 61 and am not quite sure which prop to start testing it with.
Used to fly this engine on a 60" bipe with a 13-6 and got good power at low speed, but the 13-6 looks rather "big" on the Smith.
OS allows to use a 12-6 too on this engine though at the lower limit.

If anyone has this plane/engine combo, I'd appreciate your advice.

Also, though am an experienced flier, this being a rather small and high powered bipe, I put a GWS rate gyro on the rudder (saw a friend use it on his models and was impressed). Smart moove? redundant? anyone tried it?

Thanks

Erez