Bolt-on cog - help needed

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  • Not sure if this is posted the right place, so let me know if i need to post somewhere else, but here goes:

    I have Charge Scissor frame, that has a rear spacing of something like 140mm...
    This means that using a regular track hub is doable, but not really ideal.

    I was thinking about using a 29" rearwheel and throw on a bolt-on cog.

    I know that usually people use a front wheel and convert it to use for rear, and that should be pretty straight forward when it comes to spacing and chainlines.. BUT what if i use the rearwheel.

    I dont really have acces right now to test if it would actually fit.

    (The wheels in question are from an older Kona Unit i've been told. So they are dished for singlespeed).

    What do people think - is it possible?


    Here are the wheels in question, if it helps.

  • I am using a 6 bolt cog on a rear hub, xt m756, converted to solid axle courtesy of velosolo. 135mm OLD. Chainline is ok but not perfect with 113mm BB and sugino rd2 cranks on the outer chainring position. I'm also considering converting a front hub because then I could get the chainline perfect but would be running 3/16 balls on the rear. It was trivial to bolt the sprocket on the existing hub though versus building a new wheel.

  • wheels in question are from an older Kona Unit

    A bolt-on cog on the disc side will have a ~53-54mm chainline, which could match with the outer chain ring position on a mtb crank

  • Thanks for the input!

    I think i will skip this option for now and then maybe look into having a proper wheel build instead at some point :)

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Bolt-on cog - help needed

Posted by Avatar for AlexBuck @AlexBuck