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Old 04-17-2014 | 05:07 PM
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Originally Posted by jstanton
...... It is a great running little engine but does not produce the power of a 91 glow engine.
A 2-stroke Gas engine will never be as powerful as a the same sized glow engine.

Their power and torque is closer to the same sized 4-stroke glow engine and my own experience with this engine and the OS GT15 is that propeller rpms are roughtly the same as my old FS .91 II Surpass engine.

Any model which flies well with a an OS .75AX 2-stroke or a .91 4-stroke will be an ideal home for the 15-17cc gas engines.
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