It'll be fine. The way i look at air cooled engines is there are plenty of stationary engines. Air compressors etc., plus dirt bikes that run at high RPMs but low speed, like in the woods. The RPMs may creep up as it gets warm. Oddly, most of my water cooled bikes ran horribly in stop in go traffic.
It's eight and a half gallons of gas; and an engine. What more do you need?-- BMW R80G/S
Save lives. Legalize lane sharing.
Cow eyes don't glow.