ORIGINAL: apereira

My YS160 used to turn the 17x12 at 8200RPM the same RPM the OS160 was making on a friend of mine airplane, but the OS even dough had the same top RPM it had probably 40%less power from idle to about 80% power, of course he bought my engine and dumped the OS, so this is about torque not just top RPM.

Pattern planes flying with OS and engines alike are usually handled like an on/off switch it will not pull a solid vertical unless they are at full power.

So the Syssa might have more torque, and making comparisons at top RPM with other engines are not fair, I think this engine will be better than the currently available gassers as it's being modified with pattern flying in mind.