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I know it doesn't make any since but a cleaver lifts the boat better than a chopper. Rich explained that you can cut the can and roll the tips and create bow lift in the cleaver. My cleaver will lift the whole boat out of the water where u can see under it. Where as the chopper just cleans up spray. Just no one to call and ask what's the best set up to go with. Privlage of owning a new design and toy. Lol that's the fun in it
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I'd imagine a tempest or a good raker would do well on that. Maybe bmiller will chime in. Or his friend Ethan. Both those guys have 15 spline motors and have went thru an ass of props
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how much offset you running?
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Man, that seems like a lot. You must have a light motor. I am running 8" of offset.
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I dunno what ever a yam 40 weighs
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190 pounds, built one over the winter. With that much offset, you can jack that thing to the moon.
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I know a guy in AR with a modded out merc on a havoc that grinded the weld down and ran it today and the results are hes gonna weld it back on tomorrow... He said it gave it a severe porpoising problem
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So your telling me that you ran 58 mph on an aluminum round ear 21 pitch prop? I doubt that highly...
What are you turning that motor 8000 rpms........
In perfect theoretical speed with no slip thats 6700 rpms with your 2.33 gears... now add in you're slip ratio of a standard aluminum prop... at 15% and you're at 8000 rpms
Last edited by WetReed; 05-11-2014 at 09:44 PM.
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Im just gunna leave this one alone...
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I'm with Drew, that's a lot of speed to be turning a factory aluminum 21p prop. My Ron hill semicleaver is 22 pitch and jacked up on a flat bottom and it tops out in the 40s. That's with the prop shaft 3in below the botton
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pretty sure i have 2.04 ratio. Plus, the Dia of prop, weight of boat. I have not put it on a slip calc, but i would think that 5% slip is not hard to get with these light boats. But yea, 21 pitch alum, will not run it again like that until i get a prop with more cup. No fun when she lets go.
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I have never seen a factory 90 mercury with out 2.33 gears
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Gone south, what Dia prop?
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I know its a light boat and high hp, i just sold a 1756 PAD hull with the same exact blue 90 mercury...
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8% slip, 21" aluminum prop = 58mph.
I'm with ya!!!! Heck I bet she'll do +70mph as long as you're pulling it down the interstate.
Seriously Bo, ........ you MUST have a busted GPS. I've ran a lot of pad hull and mod-v hulled boats before ... and set up 10x more for people ...... but a 21" aluminum isn't going to run 58mph on the water unless its being carried as a spare. Just sayin'.
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