merc 650 on a 15 footer,

[Nick Bain]

is "13 diameter overkill for this motor.

 

[rndn]

Re: merc 650 on a 15 footer,

Diameter really doesn't do a whole lot for a prop. It's the pitch, rake, and cup that will affect performance. If the prop fits onto the motor without hitting anything you're good to go.

 

[Nick Bain]

Re: merc 650 on a 15 footer,

wouldn't a larger diameter prop affect acceleration like too big of rims on a car?

 

[Bondo]

Re: merc 650 on a 15 footer,

wouldn't a larger diameter prop affect acceleration like too big of rims on a car?

Nope,....

That's a function of Pitch....

 

[Nick Bain]

Re: merc 650 on a 15 footer,

yeah but the longer the blades the more force against the blades theys gone be. as in leverage.

 

[Bondo]

Re: merc 650 on a 15 footer,

Well,.......

If you've got All the Answers,.....
What the 'ell are you Asking for,..??..??..??..??..??

 

[Nick Bain]

Re: merc 650 on a 15 footer,

well I had a chewed up 19p prop on once and now I have a decent 13X17 and it feels slower on acceleration and the motor seems bogged down compared to the beat up prop which was down to around 9 inches