sport 40 prop

[Ken Webb]

Need a starting point for a AA45 powered sport 40.

 

[Hydro Junkie]

447 to 450 is where I'd start, kind of depends on the boat as well

 

[FloridaScaleBoater]

Need a starting point for a AA45 powered sport 40.

Yep,

Really depends on boat & setup.

I have a scratch built WOF, with AA45 and the AA45 muffled pipe. I am running a X450/3 blade, that has been relieved slightly.

Still a little slow to come on pipe after a slow mill, so my next lake trip will be trying a X450/3 reduced .060" in diameter.

Will also try a 646/3.

This particular boat/engine combination does NOT like the X447/3 that runs so well on my CMB RS45 powered Thomas sport-40.

I you think I can help you further, feel free to ask.

 

[glenng]

If you have a X448 or P-230 try those in addition to the ones mentioned.