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  1. #1
    DAGO RACING CREW 97GPSLEEPER's Avatar
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    Idea for R&D GK Ride plate

    I have an idea and would like some opinion on how to get this fabricated.

    This will work but the key to it is having it fabricated in a way that would allow for it to be taken off to try different lengths.

    On the R&D rideplate that is modified by Group K, I want to extend the angled portion of the plate. By making the angled section longer the bow will be lifted out of the water further. Different length extensions need to be fabricated to see how much longer the angled section can be extended before porpoising becomes uncontrollable. I need some ideas on how this can be fabricated, I know we have some machinist on the forum.


  2. #2
    Moderator RX951's Avatar
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    I think Osidebill, Jims 1300, Darthraider and Bullraider may have ideas

  3. #3
    DAGO RACING CREW 97GPSLEEPER's Avatar
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    Those guys & Flying Scottsman have some machinist skills. I have a few different ideas but want to get some additional ideas.

  4. #4
    Darthraider's Avatar
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    I agree the plate needs to be longer and at a negative angle. You are on to something big.

    THIS SPEED THING WILL HAPPEN........................

  5. #5
    DAGO RACING CREW 97GPSLEEPER's Avatar
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    One idea I have in getting this fabricated goes like this.

    Take the plate to a machine shop. Have 4-6 threaded holes tapped in, evenly spaced across the back edge of the plate. For the extensions, have some holes bored through the extension that match the spacing of the threads on the ride plate. Then of course bolt it together.

  6. #6
    Flying Scotsman's Avatar
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    Sounds easy.
    Extending the rideplate 2.5" will give you more stability and speed I would expect 1.5mph.

    You could have interchangeable extensions dowel pined on to the rear of the plate.
    Or you could have a slide cut into the plate that would allow the extension to slide out and retract could even be automated.

    You could even add a micrometer adjustment for changing the angle for different rideing conditions.
    That could be automated too.

    Easiest way I think would be to weld an extension on that is longer than you want then grind it back .025" at a time till you find the sweet spot for your conditions.

    Try 3" and work down.

    Scott.........

  7. #7
    DAGO RACING CREW 97GPSLEEPER's Avatar
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    This is the kind of feed back I am looking for, thanks. I really think this will provide a gain in top speed. The longer this angle extends, the more leverage it has in lifting the bow from the water, of course there will be a point where it will porpoise.

  8. #8
    Never say never KirkF350's Avatar
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    Hey Brandon,
    Have you ever heard of Rod Systron? I know I butchered his last name. He runs Babin Machine works here in Beaumont. He is an old stand up racer from back in the day. He built the engine on Barry's 650. The guy is a freaking genius. You might reach him to see if he can do what it is you're wanting. Tell him you are freinds with Richard Martindale; they go way back.

  9. #9
    Old Ski Insanity w/rpm500's Avatar
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    i like that idea ..your effectively lenghtening the hull, this would also expose more of the intake to 'airated'(sp) water.you may have to try different grates to find one that will fill the impeller with water at speed, one for chop may do it.

  10. #10
    DAGO RACING CREW 97GPSLEEPER's Avatar
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    I know Rod very well, we have spent many days on Rayburn together, he even knows what the back of my GP looks like from an Ultra 150's perspective.

    The guy is very smart and super cool. He will do the work if I get the details sorted out.

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