Results 1 to 10 of 10
  1. #1

    Join Date
    Mar 2010
    Location
    the moon
    Posts
    862
    +1
    19

    Ride plate shimming.

    I have a riva ride plate and was wondering what is the best position to shim it. i currently have it set level with the transom plate at front and shimmed approx 2 mm at rear. what does everyone else use as a setting position.


  2. #2
    Lightning Struck's Avatar
    Join Date
    May 2011
    Location
    Davenoprt Iowa
    Posts
    714
    +1
    10
    What are you looking to do? Mph, handling? That'll change how you setup the plate

  3. #3
    lets race.... mikeFZR's Avatar
    Join Date
    Mar 2009
    Location
    MA
    Posts
    4,132
    +1
    205
    Rule of thumb is: more shims in the back = more handleing & lower top speed. Shims in the front: less handleing & more top speed.

    That is a very basic overview. Also, if you ride offshore a lot make sure to use the biggest shims you can find because using small washers (including fender washers) will put dents in your hull.

  4. #4

    Join Date
    Mar 2010
    Location
    the moon
    Posts
    862
    +1
    19
    does this mean if you shim at the front the plate will sit proud of the transom plate. i do have the largest washers i could fit in, and i mainly ride inshore on a lake. very rarely go off shore as i live right in the middle of the uk. what do you think is the best all round position.

  5. #5
    lets race.... mikeFZR's Avatar
    Join Date
    Mar 2009
    Location
    MA
    Posts
    4,132
    +1
    205
    Quote Originally Posted by razzie View Post
    does this mean if you shim at the front the plate will sit proud of the transom plate. i do have the largest washers i could fit in, and i mainly ride inshore on a lake. very rarely go off shore as i live right in the middle of the uk. what do you think is the best all round position.
    If you shim the front too much, you can cause the ski to buck due to the rideplate angle. IMO the ideal rideplate setup/ shims is totally up to you. Riding style has a lot to do with it. If at WOT you have a little bounce than I would suggest shimming the back of the plate. But, if at WOT you have no bounce and you think your ski has a little more to give, try shimming the front. However, you said you have the Riva plate which, I believe, has more angle than the stock plate-- so shimming the front may add too much angle. Good luck, hope that helps.

  6. #6
    Lightning Struck's Avatar
    Join Date
    May 2011
    Location
    Davenoprt Iowa
    Posts
    714
    +1
    10
    Riding position has alot to do with it aswell. As simple and quick as it is to change, your best bet is to experiment

  7. #7

    Join Date
    Mar 2010
    Location
    the moon
    Posts
    862
    +1
    19
    thanks guys, i have no buck so i think i have it set up pretty much where i want it to be, it is about level with the line of the hull. definately do not want it bucking. i may try shimming or unshimming the rear slightly just to see how it performs .

  8. #8
    Lightning Struck's Avatar
    Join Date
    May 2011
    Location
    Davenoprt Iowa
    Posts
    714
    +1
    10
    Reducing the amount of shims in the back should pick up speed

  9. #9
    lets race.... mikeFZR's Avatar
    Join Date
    Mar 2009
    Location
    MA
    Posts
    4,132
    +1
    205
    Quote Originally Posted by Lightning Struck View Post
    Reducing the amount of shims in the back should pick up speed
    +1

  10. #10

    Join Date
    Mar 2010
    Location
    the moon
    Posts
    862
    +1
    19
    any chance one of you guys could post a pic of how your ride plate are positioned at the rear of the hull. thanks in advance.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Riva ride plate shims?
    By eleventenths in forum Yamaha PWC Performance (4-stroke)
    Replies: 4
    Last Post: 07-20-2010, 04:13 PM
  2. R&D ride plate shims
    By jefros in forum Yamaha PWC Performance (4-stroke)
    Replies: 10
    Last Post: 10-19-2009, 11:52 AM
  3. EZ-Ride plate shims/washers
    By mrbtd in forum Yamaha PWC Performance (2-stroke)
    Replies: 0
    Last Post: 09-20-2007, 08:12 PM
  4. Ride plate shim?
    By myth in forum Yamaha PWC Performance (2-stroke)
    Replies: 9
    Last Post: 06-02-2006, 02:25 PM
  5. Ride plate shims
    By RXTCalifornia in forum Yamaha PWC Performance (2-stroke)
    Replies: 1
    Last Post: 05-04-2006, 10:50 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •