twin prop size?

[Rick]

Need help on prop size with 2 OS81's in a 50" cat hull. Thanks Rick

 

[Altimat]

X460s are a good start.

 

[Rick Jacobson]

Thanks. Are you running 81"s as well? Rick

 

[Rick Jacobson]

X460 two or three blade?? or does it matter? Thanks Rick

 

[Altimat]

X460s are a good starting prop. My single .82 cat ran well with this prop. I started with two of these on my twin when it had K&B .82's, then went to X560s which were a bit faster. Either should work fine. I've never tried a three-blade prop.