3b vs 2b
I have a 55" aeromarine apache with twin AMPS c/r outdrives connected to a 1:1 gearbox and a gas motor. I have 2b alu 55mm props which gives me 20 actual mph, scale is around 170mph. I'm looking at a pair of 3b 50mm alu.
My question is will they work? I know, at least with planes, you go smaller dia going to 3b from 2b.
Is 50mm going to be about right for my boat? I hate to spend the money if they won't. I'm looking for the scale aspect, speed around 20mph and looks as most real boats have 3b or 4b.
Thanks in advance,
340cudaman