I have not yet seen a flight test report with the OS140 engine.

How does the OS pull this airplane?

What class has it been flown in with the OS?

How is the speed and speed control with the three blade prop? Have any other props been used and what has been the experience with them?

What's the total weight and how much fuel will be needed for Masters and FAI patterns?

The ZN gear looks different from the COMP ARF gear. Which is prefered?

The rudder deflection looks very limited. How does this impact snap performance?

Colin