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  1. #1
    Member
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    Mar 2017
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    Grand Lake, OK
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    516

    Getting boat dialed in...

    Getting my 21xdc a little closer to dialed in... put a 14” plate on it and it ran 82 by myself... 3/4 below pad with 24psi and 5900 rpms.
    21xdc bullet
    250 pro xs
    28 Croxton bravo
    ultrex
    humminbirds

  2. Moderator 21XDC's Avatar
    Join Date
    Sep 2004
    Location
    Westland Michigan
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    63,353
    #2
    Perfect!

    Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html

  3. Member crank68's Avatar
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    Mar 2011
    Location
    Kenly, NC
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    17,416
    #3
    There you go !!
    BULLET 20 XRD/250 Merc Sport XS
    www.ncboatguy.com

  4. Member
    Join Date
    Mar 2008
    Location
    KINGSPORT, TN
    Posts
    3,069
    #4
    Nailed it!! Be safe enjoy!!
    2005 21XD W/ 2005 MERC 250XS BULLET TOTAL PERFORMANCE BOAT!!

  5. Member
    Join Date
    Mar 2017
    Location
    Grand Lake, OK
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    516
    #5
    At what point do I need a different lower unit?
    21xdc bullet
    250 pro xs
    28 Croxton bravo
    ultrex
    humminbirds

  6. Member crank68's Avatar
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    Mar 2011
    Location
    Kenly, NC
    Posts
    17,416
    #6
    You shouldn’t with a 21/250 combo. You would need to be past 85 MPH or so....
    BULLET 20 XRD/250 Merc Sport XS
    www.ncboatguy.com

  7. Novice Boaters Forum Moderator jclark408's Avatar
    Join Date
    Jul 2008
    Location
    Tuscumbia, AL
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    7,762
    #7
    that's spot on...………..good work...….be safe...……...you're ok below 85 with the lower unit you have
    ------Co-founder of Post Derailment, LLC---------

  8. Member Bullet Bling's Avatar
    Join Date
    Nov 2007
    Location
    Kettering Ohio land of small fish
    Posts
    1,831
    #8
    The only thing better would be if u go down the river might pick up 1-2
    2005 Stroker 2010-250pro xs

  9. Member
    Join Date
    Mar 2017
    Location
    Grand Lake, OK
    Posts
    516
    #9
    I’m going to try raising it a little more.
    21xdc bullet
    250 pro xs
    28 Croxton bravo
    ultrex
    humminbirds

  10. Member
    Join Date
    Jul 2012
    Location
    Maumelle, AR.
    Posts
    5,390
    #10
    I ran a sporty on my 2004 250XS, worked well, light load it hit 87