I am currently working on my Flip 3-D. I have broken in and tested my YS 63 on the bench. I tested 4 different props. I have a very accurate method for measuring static thrust.

Fuel was Cool Power 30% Heli, but now I have switched to Magnum 30% DZ blend. I picked up about 100 rpm on the average with the Magnum fuel.
These readings are not peak, but backed off 150 rpm rich for flying. Fuel is Magnum 30% DZ blend.

Zinger 13x6 = 9,500 RPM, lifted 7 lbs, 12 oz.
Zinger 14x4 = 10,000 RPM, lifted 8 lbs, 2 oz.
APC 14x4W = 10,300 RPM, lifted 8lbs, 6 oz.
APC 13x4W = 11,650 RPM, lifted 8 lbs, 14 oz.

While the lighter wood props spun up a little quicker, they loaded the engine more at full throttle and did not produce the static thrust of the APC props. The APC 13x4W is a little lighter than the 14x4W, and spins up quicker, almost as fast as the wood props. And as you can see, it produced a half pound more thrust than the 14x4W.