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37 ol single step what props?

Old 08-02-2007, 07:40 PM
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Default 37 ol single step what props?

im currently running 32x18 four blade merc cleavers on my #5's with 850hp, has anyone ran 5 blades with same type of power? I also have 32x17.5 but i'm lossing curise speed and i can spin the crap out of them coming out of the hole. with the 32x18 my cruise speed is about 65 at 3400rpm and top end about 100 at 5200rpm, can i do any better or should i just leave what i have?
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Old 08-03-2007, 09:12 AM
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I had a 1998 37 OuterLimits (great boat), side-by side bravo boat, best ever speed with 5 pob was 114, about 860hp per side at time.

Seems like your top end should be much faster than 100 with 850/side, even with the extra weight of the transmissions and #5s.

32x18 at 5200rpm at 100mph? What is you drive ratio?
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Old 08-03-2007, 10:58 AM
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drive ratio is 1.48
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Old 08-03-2007, 01:04 PM
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Originally Posted by tgersx
drive ratio is 1.48
1.48 drive ratio, 5200rpm, 100mph, 32 prop
thats 6% slip! can't be right!

1.48 drive ratio, 3400rpm, 65mph, 32 prop
thats 8% slip! can't be right

check your data, I would expect more rpm to get those speeds with a 32 prop, with 1.48 ratio

What rpm range is the motor built for? What is the rev limiter set at?

Its a great boat at any speed, but I am thinking 110mph for #5s and 860hp a side. Remember the 37 with 900sc, #6 runs 117ish.

Post a pic of you ride.
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Old 08-03-2007, 01:11 PM
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Are you sure about your gear ratio, dont know that much about #5's. Your slip is very low, like 6% . Had a 37 Quad step with 6's. 12-14% was as low as we ever got our slip.
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Old 08-03-2007, 08:02 PM
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BB, something must be wrong , I have 820's with #5's 37 single step and I'm going a little more than that at 5800 wot. 17.75x32's 4 blds side by side with 29 centers..
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Old 08-04-2007, 07:48 AM
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mine is staggared
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Old 08-05-2007, 08:04 PM
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Talk to JoeD on here. He has tried a number of props on his 37OL 5 blades and 4 blades.
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Old 08-15-2007, 10:53 PM
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Hey appsyscon, I now own that 98 OL and running not quite at that speed but close. Approx 850 hp
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Old 08-15-2007, 11:03 PM
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Here is a current photo
Attached Thumbnails 37 ol single step what props?-100_1952-small-.jpg   37 ol single step what props?-100_1961-small-.jpg  
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