Re: Speed/RPM/Prop questions 1998 Shabah 202
 

is thios yamaha going to fit plus the rake on an outboard is ususally different which is always a concern. try it as if you would use it if you can meaning same amount of weight in the boat and water conditions. lots of luck

Re: Speed/RPM/Prop questions 1998 Shabah 202
 

For your motor and boat size, I would go with a 19 pitch, 3 blade SS prop and a hydrofoil. No trim tabs needed. I'm suprised you could get on plane with a 21 pitch. I had a 20 foot Genesis with a little worked 5.0 LX and the boat did 60 with a 19 pitch prop. When I got it over 50 mph it was scary fast for the size of the boat. When I took out alot of people and we were sking, I would install the 17 pitch prop for a better hole shot. Good luck!

Re: Speed/RPM/Prop questions 1998 Shabah 202
 

That wouldn't have been because what i wrote in post #2 would it? ;)

Dont stick an ugly hydrofoil on the outdrive......it makes the boat look like something out of a low rent trailer park in Arkansas.

The 22" 4 blade will lower your rpms slightly and that's not something you need to do. The 20" 4 blade or even a 21" 4 blade if you can find one would be a better option. You need to get your WOT rpms as close to 4800 as possible for maximum efficiency. You are not going to hit 50mph with that boat/motor combo anyway and most people i know dont run at top speed so there's no point in pursuing that. Either install a set of Smart tabs or even a set of electric or hydraulic tabs if you have the extra $$$ in your pockets which will help get you on plane quicker and hold plane at lower speeds.

Re: Speed/RPM/Prop questions 1998 Shabah 202
 

Thanks mikey, a hydrofoil was never even a consideration for me. Too much instability/porpoising at higher speeds. I've actually just been looking around to see what's available locally, and that prop was one on there that I noticed. I would be demoing it on my own boat with my own outdrive...

Re: Speed/RPM/Prop questions 1998 Shabah 202
 

Remember that your buddy's Rinker has a pad hull at the rear and this is a fast hull but your Mariah will ride better in the chop because it has a true v hull. My Rinker 202 captivating with a 350 mag only topped out at 56 mph on GPS so a 4.3 hitting 58 is almost not believable, maybe 48 mph... unless it's an 18 foot boat.

Re: Speed/RPM/Prop questions 1998 Shabah 202
 

Try to look at the dates of the prior posts before you reopen a 4 year old thread...

Re: Speed/RPM/Prop questions 1998 Shabah 202
 

This thread is 4 yrs old.:shakehead:
The OP hasn't been on the site in over a year.
Best to PM him.