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  1. #1
    waveblasterlynch's Avatar
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    Gp1300r Jims mod ride plate

    Hi all,


    I recently fitted an r&d ride plate on my gp1300r that has had the Jims mod made to it...


    the plate made a fairly good speed improvement, maybe 2 or 3mph so very happy with that.


    problem is there is bounce in the ski now unless its fairly close to top speed....


    Has anyone any experience or suggestions on this?


    Many thanks
    David


  2. #2
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    Quote Originally Posted by waveblasterlynch View Post
    Hi all,


    I recently fitted an r&d ride plate on my gp1300r that has had the Jims mod made to it...


    the plate made a fairly good speed improvement, maybe 2 or 3mph so very happy with that.


    problem is there is bounce in the ski now unless its fairly close to top speed....


    Has anyone any experience or suggestions on this?


    Many thanks
    David
    post a picture of the plate bolted to the ski.

  3. #3
    waveblasterlynch's Avatar
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    Jim, thank very much for replying. I suppose I have the best man I could ask for.

    Please see images below, I will happily go out and take more if you wish.

    Click image for larger version. 

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  4. #4
    waveblasterlynch's Avatar
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    Here is another one might be usefull. Thank you again.Click image for larger version. 

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  5. #5
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    looks like the side are hanging below the shoe. picture is cloudy is the center section were the skeggs are rounded or squared off.

  6. #6
    waveblasterlynch's Avatar
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    Im not sure what skegs are. Sorry i only know enough to be dangerous.

    But ive taken more pictures with a proper camera

    Kindest regards
    DavidClick image for larger version. 

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  7. #7
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    much better plate alignment to shoe is good, Make sure the sponsons are stepped and might have to add 120 thousands shims to trim tabs.

  8. #8
    waveblasterlynch's Avatar
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    Quote Originally Posted by JIM'S PERFORMANCE View Post
    much better plate alignment to shoe is good
    Does this mean that the plate and shoe should be flush level or have you another suggestion on this as im not sure what i should be doing?


    Quote Originally Posted by JIM'S PERFORMANCE View Post
    Make sure the sponsons are stepped and might have to add 120 thousands shims to trim tabs.

    So get 8 120 thousands shimms and put them under the tabs one on each bolt... do you know what 120 thousands is in metric? we dont use those measurement in ireland and i cant seem to find anything on the web about converting that!

    Thank you again.
    Best
    David
    Last edited by waveblasterlynch; 06-10-2014 at 12:28 AM.

  9. #9
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    120 thou is 3mm .. yes put 3mm flat stainless washers under each bolt . If you put a straight edge under your hull and across your jims plate make sure the plate is higher than the hull.so its not draging in the water . Try spacing your plate down so the front of it is nearly flush and the rear(sides of plate ) is slightly higher .dont have any of the plate lower than the hull . The centre part of the plate under the pump should have around 23mm (920 thou) gap on the rear from a straight edge . start from around these measurements and adjust from here . I hope you can understand what im saying here ... im no expert and every ski is different ..good luck

  10. #10
    waveblasterlynch's Avatar
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    Quote Originally Posted by Steve-m31164 View Post
    120 thou is 3mm .. yes put 3mm flat stainless washers under each bolt . If you put a straight edge under your hull and across your jims plate make sure the plate is higher than the hull.so its not draging in the water . Try spacing your plate down so the front of it is nearly flush and the rear(sides of plate ) is slightly higher .dont have any of the plate lower than the hull . The centre part of the plate under the pump should have around 23mm (920 thou) gap on the rear from a straight edge . start from around these measurements and adjust from here . I hope you can understand what im saying here ... im no expert and every ski is different ..good luck
    Thank you Steve,

    i can understand all of that, just needed it in plain English as I said I only know enough to be dangerous
    ill get going on this and post back how I get on.

    thanks a bunch
    dave

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