ORIGINAL: Sport_Pilot
The .91 two strokes I own burn only about an ounce per minute flat out. With a 14 ounce tank I can stay in the air well over 14 minutes with some part throttle flying, but I try to keep it less than 14 minutes.
Hugh,
This is true of a .61 sized .91.
I.e. a .60-.61 engine that has been bored and stroked to increase its displacement to .91 cid.
This includes the OS.91FX (and it clones), the ST G90 and the MVVS .91.
But if you look into the Jett .90, the OS.91FSR (the 1.08FSR predecessor) and the Webra .91 Speed, you wouldn't even come close in their consumption. Their power differs considerably as well.