ORIGINAL: tahustvedt
I'm using a three blade 20" Soloprop on a 1:6 scale p-40 at low rpm with good results, but I don't have anything to compare with apart from APC 17x10 Pattern with at higher rpm power system on the same plane. Mine's well balanced as long as the hub halves are tightened perfectly evenly.
U using the round or square tip 3 blade Solo? An APC is a good efficient design, so glad to hear u are happy with the performance....