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  1. #1

    Join Date
    Jul 2006
    Beaufort, SC

    help me anticipate rpm with rude

    hey guys i have a rude charger on the way here are my mods.

    before the rude and rrfpr i was usually around 7850 in salt water during the summer. about 8000 in fresh water.

    04 rxp
    intercooler w/ aluminum piping, bov
    thru hull
    shorty box, no baffles (loud)
    4" front intake
    RE plates
    solas 15/20r (i think its 3blade) stock pitch
    2 degree pump wedge, vts rod extension
    rude rrfpr

    i dont have the riva ecu yet and im wondering what kinda rpm im gonna be turning. would it be better to get ahold of a different prop or bend mine?
    eventuall i will get the pump rings so i can adjust it when im in fresh water (200rpm or so).

    let me know what you guys think. i know its kinda hard to predict but we will see..

  2. #2

    Join Date
    Jul 2005
    euxton nr chorley lancashire, england
    with the standard ecu you'll see 8200 which will be on the limmiter, to be just off the limmiter you'll have to bend the prop till you see 8150rpms

  3. #3
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Morgan City, LA
    Quote Originally Posted by BoostedH23a1 View Post
    would it be better to get ahold of a different prop or bend mine?
    without a doubt you will have to add 2.5mm to 3mm pitch to the trailing edge and that is using the 81mm ring.

  4. #4
    seadoor's Avatar
    Join Date
    Nov 2006
    Puerto Rico
    jerry its right

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