I own and I've flown the OS .55 AX, the OS .75 AX and the OS 1.20 AX. All are fine engines. As Jetmech said.. I would not hesitate one second to buy and fly the .65, or the .95 for that matter.

As most of the specs for output power from any engine manufacturer are a tad bit exaggerated, 2 hp at 16,000 rpm.. well, ok. . They recommend Propellers: 12x6, 13x6-7 or 14x6. None of these will turn that RPM range on that engine. And I don't think many folks will recommend a smaller prop just to get the RPM up there, either. The noise alone would drive most folks away from the flight line.

Sorry.. I didn't mean to digress like that. I got carried away.


CGr