275 prop question

[rleip21]

I have a aq225e with a 275 out drive. The prop on it now is a c851138. Does the c mean counter rotating? I know it's a 14x21 but don't know the rotation. Also what is the target rpm and if it is running high rpm do I up pitch or diameter? Not sure what it runs at yet because I have to fix the gauge.
Thanks
Ryan

 

[captmello]

Re: 275 prop question

I don't know anything about the serial number, but those outdrives can run both props with an easy adjustment of the linkage. I would just buy a standard rotating or bring the prop to a prop shop and they can tell you.

Highest RPMs should be 4000-4400 at WOT.

 

[etracer68]

Re: 275 prop question

If the front leading edge of the prop is to the right, it is a right rotation, if its to the left, its a left rotation. Not sure on the C, maybe means a cupped prop.