ORIGINAL: naswifty
I've got the Siato .72 on one of my planes, and after extensive research found that the 13x4 APC is the way to go.
It's only problem is that the T___T won't sit still on an asphalt runway even at the slowest of idle speeds....but it just is a dream to fly and hover with that prop. and quiet too.
Well, I don't know...
I've got that set-up and mine will hold still.
I use 15% Powermaster. I tried the 20% synthetic and the idle was never "right". It did run faster, though. Back to the 15% and the idle is good and it sits still. If you don't believe me, I'll upload proof!