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  1. #1
    YamahaManny's Avatar
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    Conversion Driveshaft for SeaDoo Pump

    I had a crazy idea about using the SeaDoo OEM Drive Shaft with the SeaDoo Pump adapter for the GPRXP conversions. Just wondering if any members on here have attempted this??

    Would it be possible to turn the SeaDoo OEM shaft down to the O.D. Of the Yamaha shaft to fit thru the Hull and fit into the Half shaft?? Would it need to be ground down or could I turn it down with carbide on a lathe?? Also Wondering how the splines couldbe cut into the shaft?? Mill with carbide or on a surface grinder?? This was just an idea I had when looking for a Conversion Driveshaft for my GPRXP project.
    Any ideas, advice, thoughts is always appreciated.


  2. #2
    RXP 260 X Short Course Veteran RXP244's Avatar
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    You could always make your own. I drew up what I wanted, had it turned down from solid bar, had the splines cut in both ends and then heat treated and nitrided. 40 hours so far on 20+ pounds Turbo and still looks like the day I put it in. I just can't tell you what steel I used One thing I can tell you, it wasn't stainless.

    Image is just before heat treating and nitriding process.
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  3. #3
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Here it is ready to go into the boat.

    At least making your own means you vary the length depending on what pump setback you settle on.
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  4. #4
    YamahaManny's Avatar
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    Conversion Driveshaft for SeaDoo Pump

    Wow that shaft is a very nice looking piece. I'm sure the cost was pretty high!!

  5. #5
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Quote Originally Posted by YamahaManny View Post
    Wow that shaft is a very nice looking piece. I'm sure the cost was pretty high!!
    Not really. $100 for steel bar, $300 for turning, $90 for splines and $90 for heat treating and nitriding. All in NZD. About $450 USD.

  6. #6
    YamahaManny's Avatar
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    Oh that is alot less then what I was thinking the cost was on that piece. Might be something I'll have to look into.

  7. #7
    Duke's Avatar
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    Looks great!!

  8. #8
    ou812's Avatar
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    What shaft seal are you using?

  9. #9
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Quote Originally Posted by ou812 View Post
    What shaft seal are you using?
    Try these guys.


    http://www.ssm.co.nz/

  10. #10
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Check this out. All standard Yamaha set up using custom shaft with Seadoo pump.
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