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35 Lightning Set-ups and Speeds?

Old 11-12-2008, 06:44 PM
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Originally Posted by Kelly O View Post
So what horsepower and props you running on that boat ? This is the info and experiences needed and appreciated.


My question also, sounds like someone has some secrets to share here.

Brian Forehand @ Fountain told me short Sportmasters and Herrings back in the spring. I understand a lot of the Herrings done for Fountain have the longer hubs to aid the on plane deal. He also told me the side by side set up can be a little dicey between 90+ and 100, but after that it's on a rail. Mine runs a solid 90+, has run as much as 94 and was solid at that.

Last edited by RaggedEdge; 11-12-2008 at 06:46 PM.
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Old 11-13-2008, 07:46 AM
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dicey ain't the word for it!
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Old 11-13-2008, 08:33 AM
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675 Hp With 32x15 6 Blade With A 6'' Defuser Ring 5500 Rpm's Fountains Love Slip Litter Hard To Get On Plain But The Long Defuser Ring Helps With That.
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Old 11-13-2008, 10:02 AM
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Originally Posted by gnorthga View Post
675 Hp With 32x15 6 Blade With A 6'' Defuser Ring 5500 Rpm's Fountains Love Slip Litter Hard To Get On Plain But The Long Defuser Ring Helps With That.
I'm assuming from your earlier post you are in a 35L. What year? What was done to get to 675hp and what drive package? I wouldn't think that a 6bl herring would give much slip at all (> 10% ). I know some guys with less power around here that have tried some herrings but they can't keep drives together at all and took them off to bring their slip numbers up to save gears.
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Old 11-13-2008, 10:20 AM
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Hydromotive Drives Ron Sprol Performance (add In Back Of Power Boat Mag) Dyno At Precision Marine In New Orleans. Xr With Imco 2'' Shorties And 1'' Spacer
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Old 02-08-2019, 02:02 PM
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I have a 35 fountain Lightning with twin 575's, all of a sudden last fall it appeared to losse power and was harder to get on plane. it normally would turm 54-550 rpm's and now both engines only turn 4400 rpm/\'s any help is appreciated.
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Old 02-08-2019, 03:12 PM
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Originally Posted by NancyT View Post
I have a 35 fountain Lightning with twin 575's, all of a sudden last fall it appeared to losse power and was harder to get on plane. it normally would turm 54-550 rpm's and now both engines only turn 4400 rpm/\'s any help is appreciated.
Anything done to the engines or stock? How many hours on engines? Are they year 2002 engines? What props? What drives? That's enough to get us started.
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Old 02-08-2019, 07:15 PM
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Originally Posted by NancyT View Post
I have a 35 fountain Lightning with twin 575's, all of a sudden last fall it appeared to losse power and was harder to get on plane. it normally would turm 54-550 rpm's and now both engines only turn 4400 rpm/\'s any help is appreciated.
No idea here how to help you. My engines are out this winter for a top end fresh up, but will tell you that last run of the season, 350 +/- hours it turned 5400 at 92 on a GPS not pushing it out for a long run. Your 575's should run past my 525's, KellyO's 575 boat ran past 100 most of the time if I remember right. Might try to reach out to him on here.
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Old 12-14-2021, 08:38 AM
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i am wondering the same about the sportmasters
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Old 12-14-2021, 08:40 AM
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I didnt realize how old the thread was but still interested
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