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    Prop size gurus, I need some help, 3 blade to 4 blade

    Ran the boat today to get a good set of numbers. I made 6 two mile runs (one into the wind one with the wind); each lap's speed was averaged from my GPS log (using the water speedometer instead of the GPS speedo). Here are the results: Motor specs: 1984 Evinrude, 150 HP, V6, 15 Spline shaft RPM...
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    Some good Alumium information

    This is a website that contains information on the commonly available Aluminum structural members (angle, tubing etc) we generally use in boat building. It does not contain sheet Aluminum, nor is it a place to buy Aluminum: just good general information. 31 Aluminum forms commonly available in...
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    motors bore and stroke vs displacement

    The bore x stroke you posted is theoretical displacement, not actual displacement. There is a difference due to the needed valve clearance at the top of the cylinder. Theoretical displacement is the mathematical formula of bore x stroke, actual displacement is the same minus the valve clearance...
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    Searching for a member in Austin Texas...

    If you will someday own Triad Mechanical please send me a PM with your username. I work with Joe Crowder.
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    Evinrude water intake relocation...

    I have a '71 'Rude with the water intake above the anti-cav plate. I remember seeing a link or a thread on how to relocate the water intake to below the anti-cav plate... but now I can't find it. Can whoever posted that link please re-post it for me? please, please, please, please...
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    POssible software conflict...

    WebMonkey made me remember this joke, hope you like it. I'm currently running the latest version of Girlfriend and I've been having some problems lately. I've been running the same version of DrinkingBuddies 1.0 forever as my primary application, and all the Girlfriend releases I've tried have...
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    1971 Evinrude 18 HP longshaft

    Well, after waiting patiently and trolling craiglist for a couple of weeks I finally found my motor. I wanted a 15-20 HP long shaft tiller drive. They guy I bought it from said he had replaced the impeller and sparkplugs and it was running fine. Then it sat for over a year and he can't get it to...
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    The Boat Ramp

    I sometimes think that pulling a boat through a turnaround and backing it in to the water down a ramp causes a drastic and sudden loss of IQ. Nothing is more enjoyable than sitting on the local dock next to a boat ramp on any given three day weekend. A few case studies: We Forgot the Drain Plug...
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    Rat's 1977 Polar Kraft 1440 refit

    This hull is a 1977 Polar Kraft 1440 my Brother in Law gave me (what a great guy huh?). She has spent most of here years banging around Reelfoot Lake in west TN. Considering her home lake, and her age, she is in very good condition. My BIL had already removed the midseat, he's a duck hunter, but...
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    New Memebr Intro...

    Hey Ya'll, my name is Rat and I am a boat-building-aholic :mrgreen: ! Pleased to meet ya! I have repaired several boats in the past ranging from bass boats to bay boats, never really anything more than a hobby tho; but I have never modded an Alu. boat other than rebuilding a few transoms here...
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