I am not really sure how to mentally equate 1 blade to 2 blade shaft loads. These normally run a SB 2.875 x 4.0-4.5 or so, that means it scribes a 5.25 diameter circle.
First starts - clipped combat prop 4.5x2.75 - too much shaft load I think, can't get it past overrich low speed or starving for fuel. [UPDATE] no I think way too much fuel pressure is the problem. Pipe tap time. Will have to rob a small pressure fitting from a Norvel for now.