I missed the drive in the posts? If it's a merc I'd guess it's a bravo. 16
won't fit on an alpha. That's a noticable increase in diameter but I agree
14 pitch is a better place to start.

"Steven Vaughan" wrote in message
...
He's not going with 16 pitch...he's going with 16" diameter and 14 pitch.
Sounds right. I'd also have iot cupped.




"jamesgangnc" wrote in message
ink.net...
You can figure that each inch in pitch dropped will bring you about 200
rpm. A 16 from a 17 may not be enough. Imho, if you tested alone you
want to shoot for the higher end of the range so that when you are loaded
up with an extra thousand lbs of friends and gear you're still in the
ball park. Dropping pitch will definately help with the hole shot. A
cupped prop may provide more lift but when comparing props consider that
cupping is roughly like an extra inch of pitch. So a cupped 16 is about
the same as a non-cupped 17.