Every 50 hours?

Where do you find a set of 5’s?

Got a set of fresh 1:62 #3A’s on a truck heading my way from Collabella. Purchased through Don Carter Sr.

with the 17x31 4 blades, I should be pretty good on rpm/mph... thoughts?

31`s are gonna be a bit hard to turn with 850 hp imop
I turn a 29 (18' diameter) with 975 hp to 6K
tried a 31 one time and it only made it to 5k rpm and load was thru the roof. Boat was a turd .
1:49 ratio