ORIGINAL: MinnFlyer
You're probably not spinning THAT fast, but the point is, the engine LIKES spinning at 11,000 - 11,500. Prop it accordingly
OS advertizes the max power at 16,000 RPM with a practical range up to 17,000 RPM. I would be really quite dissapointed if their definition of "practical range" means you can rev that high, but will not last half the season if you do so.