2 vs. 3 blade

[dasboata]

Chris, what is the prefered prop for sport hydros in oval race trim ? 2 or 3 ?

Gas ? Both

[Charlietuna1]

Is there a “rule of thumb “ concerning size and pitch when going from a 2 blade to a 3 blade?
I.e. A x450 is the hot setup on my mono. Now I want to experiment with 3 blade props. Where would I safely start?

[dasboata]

Is there a “rule of thumb “ concerning size and pitch when going from a 2 blade to a 3 blade?
I.e. A x450 is the hot setup on my mono. Now I want to experiment with 3 blade props. Where would I safely start?

If you could get a 447/3 I would start with that but if you had me do a 3 blade for you I have my ways of keeping the temps down and the speeds up !