dblatner,

I can attest to the fact that the Saito .91 for the UCD .46 is PLENTY of power. I think mine came in at 5lbs, 12oz, so it's on the light side compared to some others. My .91 is still running rich and it will still climb in a hover under 1/2 throttle. I'll try a few other props to see if I can get the power a little more managable. The APC 14x4 is probably on the small side for this engine, but the LHS didn't have any 15x4s. The only time I get it over 1/2 throttle now is when I want to blast off or am doing waterfalls.

I'd like to see a UCD with a .72 and compare it to the .91.