Flew one flight today. However my arm almost fell off flipping the damned thing....I am undergoing a definite learning curve on the care and feeding of this beastie, just like I did the SAP 180 almost 3 years ago.

Weird thing is, with my particular engine, there is no real warning...the engine doesn't pop or burp or nothing, it seems. Just decides to get going at some point after 100 flips. At home, on the bench, it started easily

I am going to get a heavy duty starter after all....

The pipe is an ESComposites 40G. Header is Hatori with an extension; distance to reflector from exhaust flange is 28". Prop is 18x12 MDK Hybrid, not apc, It is a wood/carbon composite that I make. RPM's not sure but by ear I think around 8K. The plane is around 10 1/2#. I had the SAP30cc in it before and it struggled on this prop...just too much for it. Lower rpm and couldn't pull a vertical without bogging down. The OS33GT is turning this same prop very well, putting out very useful power for the kind of flying (Masters Pattern) that I do.

But I'll see how it behaves later in the spring in warmer temp and higher humidity and after full break-in. Today it was 54F (fantastic for January) and low humidity.