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  1. #1
    GZA's Avatar
    Join Date
    Sep 2010
    New Zealand

    Rideplate boundary layer

    So reading about fins and grooves not really knowing if it is a true mod or not, it did get the old grey matter moving. Has anyone tried different options for the surface of the ride plate other than giving it a really good finish?
    Did a little bit of searching/googling dimpled surfaces and came to the conclusion that it doesn't sound like it would give much advantage.

    However during this, there was a lot of talk about boundary layers. This got me thinking about air hockey tables and how this could potentially be adapted to a ride plate. Number of options really, onboard compressor, compressed air tanks, or ram air.
    Thought process was to reduce the drag by introducing an air boundary layer at the front of the plate which would drag the air along it as the ski moves through the water.
    Any how, has anybody ever looked into this?
    Potentially innovation like this might be the key to getting the ultra pulling some higher speed numbers without having to stress the motor with ecu/pulley kits.

    Could also be completly wrong and not worth the electronic piece of paper this is written on. I just like hearing about the innovative ideas you guys come up with.


  2. #2
    Take the time to smile sirbreaksalot's Avatar
    Join Date
    Jun 2007
    in a basic answer

    high gloss polished is worse for speed

    a small amount of surface tension will allow water to flow better of water , due to the NONE smooth finish


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