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View Full Version : O.S. FS-52 ie the four stroke heli engine


bigdwalker
09-23-2006, 01:57 PM
Has anyone tried this engine? I like the sound of a four stroke in a heli as you would use allot less fuel, on the other hand I think it may cause the gyro to have problems. But I just dont know.

Dave

ShawnK
09-23-2006, 02:33 PM
They run very hot, don't burn a lot of fuel, and make about as much horsepower as a poorly tuned .30-size 2-stroke.

There's a reason that you don't see many people running 4-strokes in helicopters, and it's not because it's an undiscovered secret. :wink:

Laurens
09-25-2006, 04:39 PM
I have seen some 4stroke heli's and I love the sound of them. They'll work great in scalers.