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  1. #1

    First ski, newbie, help me choose a ride plate, or shim mine, 760

    I asked this question in the 2 stroke section and they suggested I ask it in old school section so if you don't mind I will repost, here is what it said:

    I have a waveraider 760 and it's my first ski, I do like it, I rode other skis and I wasn't expecting some speedfreak out of this one just something to have a little fun with. I like everything about it except the porpoising issue, it is MAJOR, just a little chop on water will be unbearable, I found myself getting back to the dock almost idling from how bad it is, especially with a second person on it, it's as bad as it gets. My first step will be shimming the current rideplate, I don't mind spending a few bucks on getting a new one but I do wanna try shimming too. I spent few hours on this forum looking up other people's advice and seems the shimming sometimes helps, my understanding is to lower the back of the plate by bit. Now I also saw about differences in manufacturers, which one do I get? R&D, Riva, Pro-Tech...? I don't care about top end speed I am willing to sacrifice few MPH for a better ride but now I can't decide what would be the best plate to get it to ride more flat and stop acting like a wild bronco. Thanks, any other advice is welcomed


  2. #2
    Old Ski Insanity w/rpm500's Avatar
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    generally most yamaha skis take to shimming very well... with most,install shims in the rear to get a more managable ride with out power up grades(this will slow your speed somewhat but is much safer)..,
    you'll need to shim the rear of the plate approx 1/4 to 1/2 inch ..The raider is a three bolts per side system, so when you shim the rear ,you also must shim some on the second washer to keep the plate 'flat'... as the raider isnt ment to be an 'air it out' type of ski ,this is prob the way youll want to go..

    I'm sure some raider specialist will chime in to help shortly on the best plate to buy and some other tips to control your rocket ride..

  3. #3
    Quote Originally Posted by w/rpm500 View Post
    generally most yamaha skis take to shimming very well... with most,install shims in the rear to get a more managable ride with out power up grades(this will slow your speed somewhat but is much safer)..,
    you'll need to shim the rear of the plate approx 1/4 to 1/2 inch ..The raider is a three bolts per side system, so when you shim the rear ,you also must shim some on the second washer to keep the plate 'flat'... as the raider isnt ment to be an 'air it out' type of ski ,this is prob the way youll want to go..

    I'm sure some raider specialist will chime in to help shortly on the best plate to buy and some other tips to control your rocket ride..
    Thanks! I am still waiting for mr pro to advise on ride plate, i added 1 washer to middle 2 bolts and 2 washers on rear 2 bolts, tmrw is testing i will keep you updated

  4. #4
    Old Ski Insanity w/rpm500's Avatar
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    add your washers in steps to find the best ride..
    youll find it will reach the point of deminishing returns for the speed the added angle scrubs

  5. #5
    So with 2 washers in the back it was much better, i could actually use full throttle on it for awhile without being thrown like a bronco, i did notice a little speed decrease but Im ok with that, I think I will add one more washer and try it again, also I need one of those pedal wheels for the speed sensor, looked all over internet couldnt find one and I would like to have the speed working correctly, any idea where to get that, also going to look on here for oil mixture problems, I think it's using way too much oil. Thanks!

  6. #6
    Old Ski Insanity w/rpm500's Avatar
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    the wheel you should find as people take them off for speed reasons and of course now use gps.. the oil volumne on a GP760 is not adjustable..dont know on the raider 760 (1200's are)...you might go premix as this will eliminate the pump and lines which do do bad and will ruin your day quickly (seizure)..

    the washer trick helps ..remember to verify that your bolts are still long enough to engage by approx 6 turns...

  7. #7
    Quote Originally Posted by w/rpm500 View Post
    the wheel you should find as people take them off for speed reasons and of course now use gps.. the oil volumne on a GP760 is not adjustable..dont know on the raider 760 (1200's are)...you might go premix as this will eliminate the pump and lines which do do bad and will ruin your day quickly (seizure)..

    the washer trick helps ..remember to verify that your bolts are still long enough to engage by approx 6 turns...
    Just bought a bunch of better stainless steel washers that are more consistent with thickness, will replace these and couple more then test it. Where do you suggest I ask for speed sensor wheel/paddle? Thanks!

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