I have tried a few props on the 777 now and here some results 22x12 3blade Menjz at 5000rpm , 20x10 4blade 5100rpm and the troybuilt 20x14 3 blade 5500rpm.
I am using a 7 1/2% nitro and 9% oil.
I think the adjustable 20x10-14 3 blade from TBM is giving the most power so far and it looks good with the prop hub.
My question is, the specs on the engine show WOT @ 6000rpm will 5500rpm on the ground unload like a regular gas engine of 1000rpm or so overrating it?