Propeller help...so frustrating.
 

Okay, I have researched and researched, getting one contradiction after another, from Mercury's website to forums. So, I am going to try this here.

I have a Baja Outlaw 20 with a 383 performance stroker pushing 350+ hp hooked up to an alpha 1.

Currently, I am running a Mercury Fury 13.5 x 21 pitch propeller, which I am sure is totally the wrong one. At 3000 rpm's I am running 35 mph. At 5000 rpm's I am running about 56 mph. I have no rev limiter, which is why I am trying to find a propeller that will increase my speed and decrease my rpm's so my motor doesn't go boom.

Mercury's website stated to run a Laser II 23 pitch, where it then states that the Laser II's are for low hp motors???? Of course, there were some other recommendations.

At this point, I have been told by a reputable propeller shop here in Houston to run a Bravo I 24 pitch. What are your experiences and thoughts on this? Any info would be great. Thanks...

The bravo 1 4 blade you will come out of the hole better and like the ride . The bravo1 is 14.5 width and is a bigger than you blade you have. If your looking for bow lift ( you are ) try a solas titan hr 25 it has a lot of rack and lifts the bow

looking at http://www.mercuryracing.com/propell...sterndrive.php

it seems that the bravo I has a 15 1/4 in. diameter. will that fit? i will measure it when i get home to double check...

i have been recommended today by a prop shop to try the bravo I 15 1/4 by 24, which they claim will fit no problem at all...what a headache...rrrrr.

A smaller dia. prop should be able to carry your boat. The bravo can run on the alpha. Do the prop shop you are referring to, have a test program? The Revolution 4 is a 14.625 dia. prop. On a 20 footer that should be enough. If your drive is deep, a Mirage or LaserII should be the fastest. I ran an 20 Outlaw last year with a 23" mirage, and that worked well. Boat had a 454. Don't remember if it was a 310 hp or a 385 hp. Measure your x-dim. that will make it easier for us.

Hope this helps.

Yup,

23 Mirage, or Mirage Plus would be my first try.

i will get some dimensions when i get home. i honestly believe that a 23p will be too small given the number of rpm's i can carry at wot. literally, i can turn that motor over till the cows come home if i wanted, which is what i don't want to do...the guy i bought it from did some serious work to the motor, so i know it will do what it needs to. i just don't want to blow that alpha drive out turning too many rpm's.

i have looked into the mirage plus props but will have to go with a 25p given they only increment by 2. i am afraid that might be too much pitch....the place i contacted is a professional place where they do custom work on propellers, etc.

Ratio?

See if you can get your hands on test props. I tested 4 props before buying. Guessing will get pricey

Thanks guys im going with the bravo 1 15.25 x 24 the diameter will fit and i know having the four blades will help with lift. Thanks for all your help. For all that believe a 23 is the best bet, it is only 2 inches up from what i have now and i need to knock off about 1000 rpms. Im not running the typical outlaw 20 motor either.

Remember that the Bravo 24" is not a true 24", more like a 22"-23". Is your wot rpm's 5000 now, or is that what you want after dropping a 1000 rpm's off? 4000 rpm's is not much for that engine. The merc 350 and 377 likes to be @ 5000-5100 for wot.

Good luck with the B1. Keep us posted.