I was getting 12,400 to 12,600 on the ST 90 that had already been converted to gas. I think it has a 13X6 prop, but I will have to pull it off and check. I am getting into the club 40 racing and my first plane a LA Racer 40 came in today, so I spent part of the day on it. Can't believe how complete this kit (ARF) is even has a pilot and a rool of tape to seal the canopy with. Nothing to buy except some glue, engine, and radio stuff.

Jim