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  1. #1
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    Mojo HD -> 650B - can all frames be converted?

    Have an early HD (135mm x 12mm rear) and just tried my 650B wheels with Hans Damph tires. When I dropped all the air pressure from the shock, it just fouls the seat tube. Any thoughts?

  2. #2
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    See my reply on my thread

  3. #3
    Doesntplaywellwithmorons!
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    As official from Ibis, HD 140s clear 650B, HD 160s need a travel limiter on the shock to prevent the tire striking the seattube.
    I don't post to generate business for myself or make like I'm better than sliced bread

  4. #4
    www.derbyrims.com
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    Hans Damph may not clear the HD stays or just barely. Nobby Nic is supposed to clear sufficiently. I want at least 1/8 inch stay clearance and this clearance would clear the seat tube of any HD140 with stock sized shock, 2.0x7.875.

    27.5 wheels do not clear the HD160 seat tube without limiting the shock shaft travel by nearly .25 inch.

    Here's some detailed posts on the subject....
    MBM blog where Scot "Sanctioned 650b for HD140"
    Fox, RockShox, DT-Swiss, Schwalbe and Others Develop 650b gear | The Straight Dirt | MountainBike.com
    Ibis has certified 650b for the Mojo HD140

    Mojo HD 650b. The HD140 clears 650bx2.3 with no custom modification, and is sanctioned by Ibis. The HD160 requires custom shock bottom travel limit shims.
    http://forums.mtbr.com/650b-27-5/650...ty-731083.html

    Mojo C, SL 650b conversions with required custom shock shim limiting bottom travel clears up to 2.3 tires. (SL-R clears only small volume 650b tires.)
    http://forums.mtbr.com/650b-69er-new...jo-438747.html

    Shock Bottom shim instruction
    http://forums.mtbr.com/650b-27-5/650...ce-623853.html

    Shock mount offset bushings. Lowers the BB 1/4 inch, and reduces bottom travel tire clearance. There are other options if you search google. These were least expensive and are well made. The HD has 40mm and 22mm wide shock mounts, both with 8mm shock mount bolt holes. It took 3 weeks for the two I bought on eBay to arrive from Poland.
    Offset Shock Bushings Mounting Hardware Mount Kit All Frames Proshox | eBay

  5. #5
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    Quote Originally Posted by derby View Post
    Hans Damph may not clear the HD stays or just barely. Nobby Nic is supposed to clear sufficiently. I want at least 1/8 inch stay clearance and this clearance would clear the seat tube of any HD140 with stock sized shock, 2.0x7.875.

    27.5 wheels do not clear the HD160 seat tube without limiting the shock shaft travel by nearly .25 inch.

    Here's some detailed posts on the subject....
    MBM blog where Scot "Sanctioned 650b for HD140"
    Fox, RockShox, DT-Swiss, Schwalbe and Others Develop 650b gear | The Straight Dirt | MountainBike.com
    Ibis has certified 650b for the Mojo HD140

    Mojo HD 650b. The HD140 clears 650bx2.3 with no custom modification, and is sanctioned by Ibis. The HD160 requires custom shock bottom travel limit shims.
    http://forums.mtbr.com/650b-27-5/650...ty-731083.html

    Mojo C, SL 650b conversions with required custom shock shim limiting bottom travel clears up to 2.3 tires. (SL-R clears only small volume 650b tires.)
    http://forums.mtbr.com/650b-69er-new...jo-438747.html

    Shock Bottom shim instruction
    http://forums.mtbr.com/650b-27-5/650...ce-623853.html

    Shock mount offset bushings. Lowers the BB 1/4 inch, and reduces bottom travel tire clearance. There are other options if you search google. These were least expensive and are well made. The HD has 40mm and 22mm wide shock mounts, both with 8mm shock mount bolt holes. It took 3 weeks for the two I bought on eBay to arrive from Poland.
    Offset Shock Bushings Mounting Hardware Mount Kit All Frames Proshox | eBay

    Yeah what he said! Derby is known in my household by two names. One is how I refer to him, the other is how my wife does (guess which is which):
    1: The Godfather of my bike
    2: That guy that puts stuff up on that website that convinced you to spend a fortune on a bike and now our 1 year old won't be able to afford to go to college.

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