RE: Balancing a spinner trick
No, it split on a diagonal line following the wood grain. It was full blade width at the hub, down to a point at the tip with the back half gone. I can't say what the long term effects on the engine bearings would have been, but it didn't seem to bother them after a two minute run on the ground and in the air. I might have pursued the method a bit more for racing, but a buddy that knew of it decided that it might not be the best technology to allow into racing, so a ban was put into effect the next rule cycle. Now (since about 1998) pylon rules state that the prop must have two blades of equal size and shape.