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Thread: 19/20 350 XC-F Rear Wheel Position running 13-52 Gearing

  1. #11

    Default Re: 19/20 350 XC-F Rear Wheel Position running 13-52 Gearing

    Quote Originally Posted by Tee-Dubb View Post
    I switched to WPs with KYB internals. The front end rides a bit lower than the AERs did. They feel a bit heavier up front, but are super plush and way more consistent feeling.
    FTR harescrambles SrA #9, CCS roadracing #1 plate holder for 2017 and 2018
    2019 ktm 250xcf, 2018 250 ktm xcf (2 of them) , 2016 ktm 350xcf, 2014 ktm 350 xcf
    pair of wicked yamaha r6 road race bikes
    https://www.facebook.com/greg.melka.1

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  3. #12

    Default Re: 19/20 350 XC-F Rear Wheel Position running 13-52 Gearing

    The front end seems a bit unstable. As I understand, the 20mm triple adds trail, making the bike more stable?

    Here is a video of the other day after putting the extra link in the chain. It's not balls out riding but you can see what I mean about the steering being unstable. I know that lowering the fork tubes can help. Gonna try that on Wed.


    https://www.youtube.com/watch?v=U29D8tG_qRI&t=199s

  4. #13
    KTMTalk Member kenpowell's Avatar
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    Default Re: 19/20 350 XC-F Rear Wheel Position running 13-52 Gearing

    I just bolted up a set of YZ250F forks to my 2018 300 XCW. The xplor forks use 33mm axle offset and the SSS forks use 32mm axle offset. I was surprised the -1mm of trail was quite noticeable and probably an improvment on this chassis. So yes, -2mm of trail would be quite noticeable.
    Ken Powell
    2018 KTM 250 XC-W
    2012 KTM 300 XC with YZ SSS cartridges in WP forks - Sold to son-in-law on 31 October 2014 due to injury - still ride it occasionally
    2003 YZ265WR (WR426 trans except YZ250 2nd gear) with 2005 Slavens revalved AOSS forks - backup bike
    2003 KX125 with KDX220 motor & 2006 YZ250F SSS forks - added Rekluse EXP 3.0 designed for YZ125
    1979 Maico 250 Magnum
    Many, many bikes until now...
    1963 Harley 175cc Scat - 1st motorcycle

  5. #14

    Default Re: 19/20 350 XC-F Rear Wheel Position running 13-52 Gearing

    Quote Originally Posted by kenpowell View Post
    I just bolted up a set of YZ250F forks to my 2018 300 XCW. The xplor forks use 33mm axle offset and the SSS forks use 32mm axle offset. I was surprised the -1mm of trail was quite noticeable and probably an improvment on this chassis. So yes, -2mm of trail would be quite noticeable.
    Thank you Ken!

  6. #15

    Default Re: 19/20 350 XC-F Rear Wheel Position running 13-52 Gearing

    My 19 450 XCF is super sensitive to tuning. I had some vague front end feel but raised tubes in clamp to 3rd line and feedback was immediate, liked it more. It actually felt more stable and had more front end bite. So that is counter intuitive, you would think lowering tubes would give more stability but not so by my seat of the pants tuning. Make sure it is balanced and not too stiff on either front or rear, that can mess things up too. I went in 1/4 turn on HSC and it was almost unrideable in a deep sand wash. All I could do was cuss at my front tire but upon backing off the HSC it cured the instability. Bike flows really well on singletrack and desert now. Have you played with the HSC much ? What sag you running ? I went to 104.

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