Gee Bee Y props
Used a Menz Ultra 16-10 that my friend BAS gave me to try and that seems to fit the bill for the G-23...The plane could use a little more power....believe a RCS 180 might fit the bill....like the mounting arrangement for this engine..plane flys great now and I'm happy with it...got alot of nice comments on it..of course you have to dive it a little to make a loop.....am very satisfied with the kit and performance.....Am a happy camper...................