V-Drive Handling Question
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V-Drive Handling Question

  1. #1
    Member Virginia 482's Avatar
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    Default V-Drive Handling Question

    About a year or so ago, the "Blown Money" Sanger Flatbottom boat was in the For Sale section here. Nice boat and a bunch of nice parts. It sold. I saw the boat when I was watching the Weekend Paradise V-Drives New Years Day 2020 video on Youtube. It starts making its runs at 47:20 on the video in case I'm not able to start it from there.
    Now every time he nails the throttle, the boat comes up and twists hard to the right. Every time. My question is why does the boat make that kind of move, and what would you do to correct a problem like that ?
    Just trying to learn a little something here. Thank you for your time.

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    https://youtu.be/-siK-gOlkXg?t=2840

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  3. #2
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    bad plate setup and or not enough pedal

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    Old Timer LeE ss13's Avatar
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    Quote Originally Posted by Virginia 482 View Post
    About a year or so ago, the "Blown Money" Sanger Flatbottom boat was in the For Sale section here. Nice boat and a bunch of nice parts. It sold. I saw the boat when I was watching the Weekend Paradise V-Drives New Years Day 2020 video on Youtube. It starts making its runs at 47:20 on the video in case I'm not able to start it from there.
    Now every time he nails the throttle, the boat comes up and twists hard to the right. Every time. My question is why does the boat make that kind of move, and what would you do to correct a problem like that ?
    Just trying to learn a little something here. Thank you for your time.
    To correct the problem, build a right hand turning prop B-Boat, then it will twist to the left.

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    It's a setup issue combined with the torque of the motor. A standard setup V-drive (flywheel forward) has a RH prop and the torque of the prop against the water will try to twist the boat to the right. Circle boats, setup in reverse, torque the opposite way. Cav plate setup and prop selection play a huge role in controlling this, engine and strut placement will affect it to a lesser degree. Flaws in the hull itself such as warping or twisting coming out of the mold can exacerbate it as well, but I doubt that's the problem on that particular boat.

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    It's a setup issue combined with the torque of the motor. A standard setup V-drive (flywheel forward) has a RH prop and the torque of the prop against the water will try to twist the boat to the right. Circle boats, setup in reverse, torque the opposite way. Cav plate setup and prop selection play a huge role in controlling this, engine and strut placement will affect it to a lesser degree. Flaws in the hull itself such as warping or twisting coming out of the mold can exacerbate it as well, but I doubt that's the problem on that particular boat. Also, as mdsheppie mentioned, pedal technique can make all the difference. More horsepower = more down plate needed on launch. Checkout the plates on a BAF, suckers move a few inches!

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    Member Virginia 482's Avatar
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    Thank you for the replies !

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    For what its worth, a standard set up with flywheel forward will have a LH prop.

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    Quote Originally Posted by VD Cruiser View Post
    For what its worth, a standard set up with flywheel forward will have a LH prop.
    D'oh! Darn it, I always mix that up! Thanks!

  11. #9
    Member Virginia 482's Avatar
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    Quote Originally Posted by VD Cruiser View Post
    For what its worth, a standard set up with flywheel forward will have a LH prop.
    Thank you for clarifying that. I thought I had remembered my old Cole having a LH prop on it.

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    Last edited by Virginia 482; 06-26-2020 at 04:28 PM.

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