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  1. #1

    Join Date
    Feb 2006
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    Annoying Newbie Questions

    I did search, but...

    #1 - Can the IR mod 3 plate be made to work well in heavy chop? I know the stocker is best, but with stepped sponsons and shimmed trim tabs is the IR plate livable in the ocean?

    #2 - Nozzle trim position. On other skis, full bow down for holeshot and then full bow up for top speed. Can I assume it is the same on the GPR? Or do most people leave it in "neutral?"

    I bought this ski for its rough water ability, so I would like to maximize its abilities in the surf.

    Thank you,
    Eric


  2. #2
    Hydrotoys's Avatar
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    Jul 2005
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    Re: Annoying Newbie Questions

    Quote Originally Posted by Gipper
    I did search, but...

    #1 - Can the IR mod 3 plate be made to work well in heavy chop? I know the stocker is best, but with stepped sponsons and shimmed trim tabs is the IR plate livable in the ocean?

    #2 - Nozzle trim position. On other skis, full bow down for holeshot and then full bow up for top speed. Can I assume it is the same on the GPR? Or do most people leave it in "neutral?"

    I bought this ski for its rough water ability, so I would like to maximize its abilities in the surf.

    Thank you,
    Eric
    1. Wouldn't recommend it for rough water. You can make it work, but will end up slower than stock plate.
    2. Yup...but it's very ski/rider/conditions specific.
    3. Consider a stock rideplate, 3 deg nozzle, aftermarket sponsons, and mechanical trim tabs. No one sells mech tabs anymore, so good luck on that one.
    4. If you are racing really rough water, consider the pro2 shoe/grae from R/d. You will need to do a bunch of grinding to make it sit flush.
    5. The magnum pumps work wonders in rough water.
    6. Aftermarket power valve controller, or gas valves really help with engine management too.
    7. The gpr seat has been known to get the latch knocked open in heavy surf, when tail landing. Look into protecting this area.
    8. The 2" pump extention conversion for the older gpr's is a good thing.

    Generally speaking, what works for rough water and ocean isn't very good for grudge racing on smooth water.

  3. #3
    philip_gpr's Avatar
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    Dec 2005
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    Canada
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    Everybody that rides in rough water (more than 1 ft chop) should have one of these

    http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMESE%3AIT

    Use it just as Mark described with the stock rideplate.

  4. #4

    Join Date
    Feb 2006
    Location
    Massachusetts
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    214
    Thank you very much for the replies.

    I actually just purchased a Riva plate to replace the IR plate (The IR plate was cracked from the back to about 3" from the front). The Riva plate supposedly is as good as stock in rough water and gives you a little more flat water speed. I am also putting R&D trim tabs on. If need be, I can step the sponsons and/or put on the stock plate.

    I'm trying to toe the line between good rough water ability and flat water speed (isn't everybody?) As long as I can maintain 70 MPH in the flat and about 45 MPH in 2' chop, I will be satisfied.

    Eric

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