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Thread: X645 for a modded BJ29 v2?

  1. #1
    Join Date
    Jul 2013
    Location
    Mi
    Posts
    200

    Default X645 for a modded BJ29 v2?

    Im running a modded BJ29 v2 with a 1400 kv Leopard 3674 motor and a SK180 v2 esc. This is a dedicated 6s setup that ran awesome with a prepped X642. Temps came back under 130 after timed 3 minute runs unless the water was in the 80's.

    My X642 got trashed after hitting a piece of rope that was floating in my course area.

    Given my setup, is it possible run the larger X645 without issue?

  2. #2
    Join Date
    Nov 2009
    Location
    US
    Posts
    5,557

    Default

    I think you are already at a great prop with the x642, plus your temps are close to being at what I consider the high end(135* to me is tops) The boat should be plenty fast with the 642
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  3. #3
    Join Date
    Oct 2013
    Location
    la
    Posts
    8,740

    Default

    I find the x or m 645 makes a smaller hull like that unstable when swapping from a 642. I did this comparison by accident last weekend and the boat flipped easily. I think it had more lift so it will require retuning to adapt for it. I put the 642 back on and it was stable again. The boat does over 70 with the x642 so I know it's enough prop to go fast.
    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

  4. #4
    Join Date
    Jul 2013
    Location
    Mi
    Posts
    200

    Default

    Glad i asked. I will just order another X642 and call it good.

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