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-   -   32 speed (https://www.offshoreonly.com/forums/fountain/175385-32-speed.html)

US1 Fountain 01-20-2008 12:59 PM


Originally Posted by Fenderjack (Post 2410665)
So I guess you guys are saying a 32 fountain wont run better than hight 80's???????????JOHN

High 80's?
Not with 502's
HP500's will tickle it

266ltd 01-20-2008 07:33 PM

right a 5000-5050

itilldo 01-20-2008 09:34 PM


Originally Posted by US1 Fountain (Post 2372305)
My 502 boat sees the best of 76-77.

Sure wish it could run in the 80's, then I would be able to keep up with the 32 on my lake that has the HP500EFI's. :)

what would a 32 with 500 EFI's do

convincor253 01-21-2008 09:15 AM


Originally Posted by 266ltd (Post 2414244)
right a 5000-5050

You mentioned in your earlier post that you could run 77-78 mph (gps) at any time with your 26 pitch Hydromotive props. At 5050 rpm's if your gear ratio is 1.5 that equates to a prop slip percentage of 7.106% at 77 mph and a slip ratio of 5.899% at 78 mph. If you gear ratio is 1.35 it equates to a slip ratio of 16.395% at 77 mph and 15.309% at 78 mph. On one end the slip percentage with the 1.5 ratio is extremely good and the other end with the 1.35 ratio is more realistic. There are several ways to figure the prop efficiency slip ratio. The one we use is RPM X PITCH, DIVIDED BY GEAR RATIO, DIVIDED BY 1056, = SPEED AT 100% EFFIENCY. To calculate yours you would divide your gps speed by the 100% speed. Subract that percentage number from 100% and you have your slip percentage. For a 32' single step Fountain, 10% slip is very good. Most run at 12% or higher. I have a 1998 single step 32 Fever and mine is around 15% slip.

I have been told that some 502/415 Mag motors rev limiters are set at 5050 and some are set at 5200. I tend to believe that since my last boat hit the limiter at 5050 and my current boat hits it a 5200. Both boats have 502/415 Mag motors. It you are up against the limiter with the 26 Hydro's, you might want to go to a lab finished 28. If you go to a Bravo I prop, the 28 pitch is realy 27.333 pitch in stock form.

Sorry if I gave you more information than you wanted to know.

Good luck!

266ltd 01-23-2008 06:25 PM

awsome reply thanks. yea, i forgot 2 add drive ratio, sorry it is a 1.5 drive havent hit the rev. limiter yet! gps showed 80 once but i think it was a fluke/glitch, looked @ my tach looked almost like 5100 at that time

fountain 47 sc 01-24-2008 10:00 AM


Originally Posted by 32fever (Post 2413904)
To correctly determine an approximate top speed, we would require details on the dry weight of your significant other's belongings, luggage, and "accessories" that will be loaded on to the boat.

My estimate, depending on the above answer, is 72-76, realistic speeds.

I've had my 96 502 boat for 8 years and prior to having years of "stuff" shoved in every crevice, I'd see 77-81. Now 76 is a good day with a full-ish tank.

No major issues in 8 years. Little stuff, but nothing that wouldn't happen with any other boat.

The only note is they are not a good boat if you beach a lot. They don't like to be beached, it's already at the water line already.

They're a great bang for the buck boat. Nice speeds with reliable power. You won't lead a poker run, but you'll still have the same amount of fun.

I've never beached my boat. Doesn't that scratch up the pad/keel?


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