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-   -   27 Fountain Fever prop help (https://www.offshoreonly.com/forums/prop-talk/206102-27-fountain-fever-prop-help.html)

speedfever 04-03-2009 08:15 AM

27 Fountain Fever prop help
 
I have a 2000 Fountain Fever 27' with a 502 mag and 1.5 ratio bravo 1. I have a hydromotive 4 blade 15 1/2 x 23 pitch prop on it now which came on the boat. The boat runs 67mph (gps) 68mph (gaffrigspeedo)@ 4950rpm's with 2 people on the boat, app 30 gal of fuel, 2-3mph wind and pretty smooth water (fresh).
I want to get more top speed out of it.
What prop should I use ?

UNSANE 04-03-2009 09:12 AM

According to my math, thats 7.2% slip and that's pretty good! Later on the 27's were powered by 496's. I believe they raised the drive a couple of inches, switched to a 1.65 ratio and used 28" B1 props. However, they pretty much ran the same speed you are. Honestly, you're propped about right. High 60's is about all that boat will run with that kind of power.

Petesflht 04-03-2009 11:28 PM

I have a 2002 27' with 496 / 425 and 1.5 Bravo. Ran a 28" Bravo last summer and hit 70 once and she was a dog outta the hole; having BBlades lab me a 28" Bravo and hopefully it will be better.

fountain-fever 05-01-2009 03:52 PM


Originally Posted by UNSANE (Post 2835273)
According to my math, thats 7.2% slip and that's pretty good! Later on the 27's were powered by 496's. I believe they raised the drive a couple of inches, switched to a 1.65 ratio and used 28" B1 props. However, they pretty much ran the same speed you are. Honestly, you're propped about right. High 60's is about all that boat will run with that kind of power.

Hi, I Have This Same Boat,It,s Hard To Get On Plane,Would A Smaller Dia Or Pitch Size Help This With Out Hurting Top Speed Much?

bbladesprops 05-01-2009 05:52 PM

Smaller pitch will often help with planning. However, if you run into the limiter at WOT, you will lose speed.

B

SDFever 05-02-2009 02:36 AM

At the risk of stating the obvious, make sure you bury the tabs until on plane.

Otherwise, this boat labors badly to plane and it's pretty hard on the drive.

Brett is the man. He's takin' care of me in the past and now I'm back for more.

fountain-fever 05-02-2009 02:46 PM


Originally Posted by SDFever (Post 2857218)
At the risk of stating the obvious, make sure you bury the tabs until on plane.

Otherwise, this boat labors badly to plane and it's pretty hard on the drive.

Brett is the man. He's takin' care of me in the past and now I'm back for more.

Even When I Have It Tabed Out - With 4 People In The Boat It Really Labors Hard,It Has A 23 Pitch Hydromotive And At WOT Its Perfect, Did I Read That You Can Haved The Prop Cupped More For Better Bite?Or Is That Asking To Much Of The Boat?

Alpha Tango 05-02-2009 05:11 PM

I think your there. I have a 2001 27 Fever with a 496, Bravo 26 P. No problems out of the hole and top out at 68

BAJA WILL 05-02-2009 05:15 PM

Boat should have come with a 24 Hydro, put you right at 70mph.:ernaehrung004: Previous owner probably switch them up to plane faster.

SDFever 05-02-2009 10:48 PM


Originally Posted by fountain-fever (Post 2857460)
Even When I Have It Tabed Out - With 4 People In The Boat It Really Labors Hard,It Has A 23 Pitch Hydromotive And At WOT Its Perfect, Did I Read That You Can Haved The Prop Cupped More For Better Bite?Or Is That Asking To Much Of The Boat?

There's always the ying and yang for me. It's difficult if not impossible to have it all. Cuping the prop will give you better time to plane and hole shot but it will cost top end. Depends on who you are.

fountain-fever 05-03-2009 12:20 PM


Originally Posted by SDFever (Post 2857650)
There's always the ying and yang for me. It's difficult if not impossible to have it all. Cuping the prop will give you better time to plane and hole shot but it will cost top end. Depends on who you are.

Thanks For The Info!!

apppedigree 05-04-2009 11:05 AM

Those hydromotive props are mules out of the hole. Bravo props are much better - at least that was the deal with my 27.

29's are better with the hydro props. I was told to run nothing but bravo props on mine. Hydro provided too much stern lift.

Griswald 05-04-2009 12:35 PM


Originally Posted by apppedigree (Post 2858486)
Those hydromotive props are mules out of the hole. Bravo props are much better - at least that was the deal with my 27.

Hydro provided too much stern lift.

I agree with this statment 100%

10K4U 05-04-2009 11:03 PM


Originally Posted by bbladesprops (Post 2857037)
Smaller pitch will often help with planning. However, if you run into the limiter at WOT, you will lose speed.

B

I too have this problem and have been looking into b-blades.Im hitting 65 on gps with about 3/4 fuel with one person onboard.Have tabs at 2 to 3 on indicators and the drive at about 4 to 5 WOT but hit rev limiter at about 3/4 throttle.Have tryed backing out and slowly increasing throttle but nothing seems to help.I have a 27 with a 496 ho with a 1:65 ratio and a 26p bravo 1.Any help would be gratly apperciated.would like to see low 70's if possible?

apppedigree 05-05-2009 08:39 AM


Originally Posted by 10K4U (Post 2859050)
I too have this problem and have been looking into b-blades.Im hitting 65 on gps with about 3/4 fuel with one person onboard.Have tabs at 2 to 3 on indicators and the drive at about 4 to 5 WOT but hit rev limiter at about 3/4 throttle.Have tryed backing out and slowly increasing throttle but nothing seems to help.I have a 27 with a 496 ho with a 1:65 ratio and a 26p bravo 1.Any help would be gratly apperciated.would like to see low 70's if possible?

My 27 which was a 94 stepped hull liked to have the drive at 3.5 and the tabs at 2.5 which was even with the bottom of the boat. I would suggest finding out where that is for you. Plane with the tabs buried and then raise them to even with the bottom of the boat to "extend the hull".

If your hitting the rev limiter while running WOT then maybe go up a pitch, see where you stand, your cruising speed will be better for sure anyways.

My opinion, and I dont mean to rain on anyones parade, 65mph, 68mph and 70mph, 75mph, theres not much difference. You need to remember that you have a 27' boat, it gets real hairy at the upper 80's and low 90's. Once you scare yourself you wont have fun with it anymore I promise and your girl wont either.

You can dick around with this thing all you want, I had 850hp in mine and it ran 95mph most days, but it was a handful, when you get done testing and breaking stuff and replacing drives, you could have a nice downpayment on something bigger that can take you to the next level. JMO

Westcoast 05-05-2009 09:33 AM


Originally Posted by 10K4U (Post 2859050)
I too have this problem and have been looking into b-blades.Im hitting 65 on gps with about 3/4 fuel with one person onboard.Have tabs at 2 to 3 on indicators and the drive at about 4 to 5 WOT but hit rev limiter at about 3/4 throttle.Have tryed backing out and slowly increasing throttle but nothing seems to help.I have a 27 with a 496 ho with a 1:65 ratio and a 26p bravo 1.Any help would be gratly apperciated.would like to see low 70's if possible?

You should be running a 28P bravo

10K4U 05-05-2009 10:52 AM


Originally Posted by Westcoast (Post 2859229)
You should be running a 28P bravo

whoops I reailized I mistyped that I meant Im running a rh 28p think I might try and find a freind with a 30p and see how bad getting on plane would be.I reailize it may not give me a million mph more but would like to see the speeds that fountain says.

Carder 05-05-2009 01:20 PM

If you are running a 28p Bravo, also consider a 29Hydro Q4 for best top end stuff. Unfortunately, I just sold 2 of them.
Carder

10K4U 05-05-2009 01:30 PM


Originally Posted by Carder (Post 2859398)
If you are running a 28p Bravo, also consider a 29Hydro Q4 for best top end stuff. Unfortunately, I just sold 2 of them.
Carder

will look into that as well.Thanks Carder.Also to the OP sorry for hijacking...haha:ernaehrung004:

SDFever 05-05-2009 08:21 PM


Originally Posted by Westcoast (Post 2859229)
You should be running a 28P bravo

U should up your membership. :evilb: :signs069:

Westcoast 05-05-2009 10:05 PM


Originally Posted by SDFever (Post 2859723)
U should up your membership. :evilb: :signs069:

U should be running a 32p labbed bravo:violent040:

BAJA WILL 05-06-2009 02:52 PM


Originally Posted by Carder (Post 2859398)
If you are running a 28p Bravo, also consider a 29Hydro Q4 for best top end stuff. Unfortunately, I just sold 2 of them.
Carder

415hp or 425 hp will not spin a 29 Hydro on a 27 Fever, you will never hit enough rpms.

415hp came with 24 Hydro, LH 70 mph

500efi can with 25 Hydro rh 74mph

in 2002 (or close) Fountain switched to Bravo props, because Brunswick wanted Bravo props on their motor/drive packages. :ernaehrung004:


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