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771 Racing - Brain Download

  1. #51
    Lifer
    Join Date
    Jun 2011
    Posts
    16,509

    Re: 771 Racing - Brain Download

    You're seriously going to build a "GP bike" around traditional, right-side up forks?!
    For most applications I'm as sold on inverted forks not being required as the next guy. But this is one place where .. just no.
    Do it right.


    Now. Back to my life of domestic bliss.

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  2. #52
    Lifer Kurlon's Avatar
    Join Date
    Jun 2007
    Location
    Waterboro ME
    Age
    46
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    13,519

    Re: 771 Racing - Brain Download

    So, there is more than one reason why I'm currently targeting that front end, there is more to fork choice than length and brake setup. In particular, one thing I see repeated often in the write ups of other F450 is they're chasing front end chatter issues. Lots of potential reasons, one theory is that modern USD short road race forks are too stiff for the comparatively flexy frame of a motocrosser. When the R6 first went USD forks, some didn't like that change as the frame wasn't adjusted to match. If you look at current MotoAmerica Twins, more than one bike out there is running conventional forks despite USD conversions being legal, and well within their budget. I'm awaiting input from one gentleman who's built an F450 before to see if he thinks this make sense as well before making any purchases, and doing more research in the mean time. Some of the data I need to find is fork lengths for different machines over the years which is proving more of a PITA to track down than I would have guessed.

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  3. #53
    Lifer Kurlon's Avatar
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    Jun 2007
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    Waterboro ME
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    Re: 771 Racing - Brain Download

    Starter revived, you CAN recover a KTM bendix.

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  4. #54
    Lifer Kurlon's Avatar
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    Jun 2007
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    Waterboro ME
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    Re: 771 Racing - Brain Download

    771 Racing - Electric start revived. Had one short setback...

    36ish to 38ish in the garage, and once the battery warms up it spins it right over. For those curious about Lithium batteries in cold weather, this is how they behave.

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  5. #55
    Lifer Tekime's Avatar
    Join Date
    Mar 2016
    Location
    Falmouth, ME
    Age
    44
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    1,323

    Re: 771 Racing - Brain Download

    Doesn't everyone rave about conventional SV setups?

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    05GSXR75005SV65090DR350

  6. #56
    Lifer Kurlon's Avatar
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    Jun 2007
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    Waterboro ME
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    46
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    13,519

    Re: 771 Racing - Brain Download

    YouTube

    TLDR - Can't make spreadsheets exciting.

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  7. #57
    Lifer Kurlon's Avatar
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    Jun 2007
    Location
    Waterboro ME
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    46
    Posts
    13,519

    Re: 771 Racing - Brain Download

    YouTube

    Watch to the end, no spreadsheets were harmed in the making of this video.

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  8. #58
    Your Father csmutty's Avatar
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    Sep 2008
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    Pomfret Center, CT
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    32
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    11,813

    Re: 771 Racing - Brain Download

    Hahaha well done. That was a nice touch.

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    -Christian LRRS/CCS HasBeen ECK Racing
    2011 Pit Bike Race CHAMPION!

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