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  1. #1

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    Re block offs question

    anybody running these at speeds of 75+? im wondering if they aid a speed run? or would normal block offs be better,my ski doesent feel the same, not so twitchy at the back,not so lively,do these cost speed on flat water im not convinced they are as good on flat water as they are in chop,


  2. #2
    Site Admin Green Hulk's Avatar
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    They help you go faster by preventing porpoising. They do not scrub speed. The ski is also faster thru rough water as they help keep the nose planted.

  3. #3

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    Quote Originally Posted by Green Hulk View Post
    They help you go faster by preventing porpoising. They do not scrub speed. The ski is also faster thru rough water as they help keep the nose planted.
    yep,understand that, question is anybody running these at 75+,what they spose to do as to what they actually do info is what im after..

  4. #4
    dhoad's Avatar
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    lotsa people run them at 75 plus. With Jims modded rideplate the blockoffs really made a difference in the ski stability and as GH said no porpoise at high speed

  5. #5
    JFizzleJR's Avatar
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    Mine do exactly what they're supposed to. They stopped my ski from bouncing so damn much. The regular and simpler flat block-off plates that don't cover the hull opening will hardly do anything to help stop porpoising. Add skegs if you feel the ski is too loose.

    http://www.4-tecperformance.com/inde...roducts_id=382

  6. #6

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    Quote Originally Posted by JFizzleJR View Post
    Mine do exactly what they're supposed to. They stopped my ski from bouncing so damn much. The regular and simpler flat block-off plates taht don't cover the hull opening with hardly do anything to help stop porpoising. Add skegs if you feel the ski is too loose.

    http://www.4-tecperformance.com/inde...roducts_id=382
    i was wondering if the gap left after fitting grabs water and creates drag,or is the gap to allow water to pass through..

  7. #7
    dhoad's Avatar
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    Quote Originally Posted by MARK_LEGG View Post
    i was wondering if the gap left after fitting grabs water and creates drag,or is the gap to allow water to pass through..
    there is little to no drag. Guys around here fill that gap in to give a cleaner look. I have run with the gap filled and gap exposed with no difference in speed or handling.
    BTW, some of the best money I spent to make the ski safer/stable at speed

  8. #8

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    Quote Originally Posted by dhoad View Post
    there is little to no drag. Guys around here fill that gap in to give a cleaner look. I have run with the gap filled and gap exposed with no difference in speed or handling.
    if you run your hand from the front to the back are the REs slightly proud? of the side of the hull ??? thanks

  9. #9
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Quote Originally Posted by MARK_LEGG View Post
    if you run your hand from the front to the back are the REs slightly proud? of the side of the hull ??? thanks
    Mine on the left side fit like total shit (2 different sets) I had to mill down the mounting plate to make it fit clean with the hull The right side fit better... the riva's will give you the best fit quality without question!!!

  10. #10
    dhoad's Avatar
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    Quote Originally Posted by MARK_LEGG View Post
    if you run your hand from the front to the back are the REs slightly proud? of the side of the hull ??? thanks
    only thing proud on mine was the price JK
    Fit was quite good on my ski with no glaring high or low spots. quality piece IMO

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