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  1. #1
    Altezza01's Avatar
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    to cut or not to cut?

    ok i've been using the search and i'm not getting a definant answer....which is better.....cut or uncut trim tabs? they're riva trim tabs untouched and i also have a riva plate untouched but will be sent off this off this winter to jim. has anyone dont any testing? also the water i ride in it choppy if that has any affect.


  2. #2
    African-American
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    Mine are the old style R&D, they are thinker than the oem ones, so they dont have to be shimmed and they have slightly deaper cuts on them. Im not sure how the riva ones are.

    From what i understand:

    cut:
    Fastest. Some people say its better for wave jumping, as you dont get the tail push effect.

    Uncut (extended length):
    better handling (tracking) and increased holeshot, since there is more surface area at the rear of the ski, pushing the nose down.

  3. #3
    philip_gpr's Avatar
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    tabs

    "are thinker than the oem ones, so they dont have to be shimmed"

    hmmmmmm......

    I never leave home without them.

    16 washers, 2 under all 8 trim tab bolts.

    I always have my Riva or R&D trim tabs shimmed. The rougher the water the more shims I use. I'd suggest you try shims .100 inch and .150 to see what you like better.

    Even on flat water my tabs are shimmed, this alows me to run a higher angle on my rideplate.


    As far as cutting the trim tabs, I always cut the end off. I find the height of the trim tabs has more effect on ride quaility than the length of the tabs. However, if you ride only in rough water I would suggest you leave the tabs uncut as suggested above.

  4. #4
    Altezza01's Avatar
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    well when i put the tabs on i noticed it bounces just a little after 55mph or so. would cutting the tabs help prevent this?

  5. #5
    If it's bouncing, do you have your sponsons stepped? That's the first thing you need to do.

  6. #6
    Altezza01's Avatar
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    yea they're stepped.

  7. #7
    philip_gpr's Avatar
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    tabs

    "would cutting the tabs help prevent this?"

    no, it will make it worse

    shimming the tabs down will stop this bounce and will make the ski more stable in rough water

  8. #8
    Altezza01's Avatar
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    ok thanks. where would i get shims? i know washers aren't all the same thickness.

  9. #9
    philip_gpr's Avatar
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    any hardware store - ideally get stainless washers

    you might also need some longer bolts

    try to get the total thickness around .100 to .120 inch (using 1 or 2 washers)

  10. #10
    james k's Avatar
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    Quote Originally Posted by Altezza01 View Post
    ok thanks. where would i get shims? i know washers aren't all the same thickness.
    You can get 1/4" stainless steel washers at home depot and are usually .055-.061...I use a micrometer to measure each one and just mix and match to get the same thickness,.170 is what i use with stock tabs....

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