Propeller pitch

[Billy Barrett]

I have a 98 chapparal 240 signature series with a 5.0 mercruiser bravo one outdrive what pitch prop should I use?

 

[jimmbo]

Welcome to iboats

What did it come with, and what RPM was it getting at WOT, trimmed out for best speed?

In addition, what are your intended uses?

 

[Billy Barrett]

To be honest I don't know I had the boat worked on and the prop was changed. That mechanic moved and can't remember what was on it before I'm taking the boat out this weekend and I'll check rpms and what is WOT I'm new to that term. I'll take pics this weekend as well thank you and also it would be nice to pull a skier

 

[tpenfield]

I believe that Mercury has a prop 'calculator' that can determine (estimate) what prop size/pitch you would need.

I'd be thinking the Mirage @ 17-19" pitch, since you have a 5.0 on a 24 foot boat. If you had a 5.7 or a 7.4, then you'd be in the 21" pitch range,

 

[jimmbo]

WOT: Wide Open Throttle

What is the Gear Ratio of the Drive?

 

[QBhoy]

If your bravo is a bravo 1 and the usual 1.5 ratio…I’d be starting with a 15-17”. But it’s anyone guess really until you try it out. Also depending on what 5.0 you have too.

 

[Billy Barrett]

Got it thanks everyone