14.25 x 21 to 14 x23 ?

[bkw1]

I am running a 14.25 x 21 3 blade Alu and hit the rev limiter about 7/8 throttle. I am guessing I would probably hit 5K plus on the tach with out the rev limiter. Recommended WOT is 4400 to 4800. I am thinking of going to a 23" pitch so I am looking at probably 300 to 400 drop in WOT RPM's thus ending up in the 4600 range. My question is should I try and stay with the 14.25. If I go to to a 14" does it change the 300 to 400 WOT RPM change. Last question, I noticed on iBoats quite a few prop manufactuers, does it really matter what brand of prop. New to the forum appreciate any insight the more experienced with prop changes can shed on this, thanks.

 

[steelespike]

Re: 14.25 x 21 to 14 x23 ?

Diameter is a product of the prop design when dealing in that small difference.
Assuming same material the 300 to 400 rpm should hold true.
The experts may be along with a brand/design preference.

 

[bkw1]

Re: 14.25 x 21 to 14 x23 ?

SteelSpike, thanks for the response, yes I am staying with AL. I believe with a 300 to 400 drop this will put me in the 4600 to 4700 range which is on the high side of the 4400 to 4800 suggested WOT range. I am hoping to hit 4700. Prop design / manufactuer suggestions would be helpful at this point, again thanks.

 

[rndn]

Re: 14.25 x 21 to 14 x23 ?

Welcome to the forum bkw1!!