Purchased wrong rear hub on new wheelset - need help!- Mtbr.com
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  1. #1
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    Purchased wrong rear hub on new wheelset - need help!

    Hi,

    I'm a rookie regarding bicycle mechanics and I might of made a $400 mistake. The hub on my new wheel is too short for the drop out.

    I mistakenly bought a 190mm x 12mm hub instead of a 197mm x 12mm.
    I had measured my old wheel hub and was sure it was 190mm. It's a thru axle hub with closed dropout.

    Is it possible to correct the situation by adding a 7mm shim or maybe 2 shims of 3.5mm (one on each side) so that the brake rotor matches the caliper.
    Is there a trick of the trade here that someone could teach me

    Thank you

  2. #2
    rth009
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    Its entirely possible you could just get new endcaps to convert the 190mm quick release hub to 197mm through axle hub. What model hub is it?

  3. #3
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    Quote Originally Posted by rth009 View Post
    Its entirely possible you could just get new endcaps to convert the 190mm quick release hub to 197mm through axle hub. What model hub is it?
    It's a Origin8 hub, looks very alike this one;
    https://www.modernbike.com/origin8-f...e-fat-bike-hub

  4. #4
    Rippin da fAt
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    Quote Originally Posted by ZenDen View Post
    Hi,

    I'm a rookie regarding bicycle mechanics and I might of made a $400 mistake. The hub on my new wheel is too short for the drop out.

    I mistakenly bought a 190mm x 12mm hub instead of a 197mm x 12mm.
    I had measured my old wheel hub and was sure it was 190mm. It's a thru axle hub with closed dropout.

    Is it possible to correct the situation by adding a 7mm shim or maybe 2 shims of 3.5mm (one on each side) so that the brake rotor matches the caliper.
    Is there a trick of the trade here that someone could teach me

    Thank you
    Many 190/197 hub makes and models have end caps readily available to convert a 190 to 197 or vice versa. Look up the manufacturer and see if they offer the parts needed or contact them for the information. You're not dead in the water, just need the correct caps.
    Get fAt, Stay fAt, Ride fAt
    Doctor recommended...

  5. #5
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    Thanks everyone.., back to the drawing board

  6. #6
    Elitest thrill junkie
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    It is possible. You could just run spacers like when converting non-boost hubs to boost. Unfortunately those specific kits wont work (fronts are 5mm and rears are 3mm), but you just need the proper ID and a reasonable OD, a 3mm rear brake spacer on a rear boost conversion kit is probably fine. Really, youd just need a rear boost conversion kit and a 1mm spacer. Depends on how fancy you want to get, you could do a 4 and a 3, or maybe you could find two 3.5s, or maybe 7 and re-dish the wheel with no brake spacer.

    Its definitely possible.
    "It's only when you stand over it, you know, when you physically stand over the bike, that then you say 'hey, I don't have much stand over height', you know"-T. Ellsworth

    You're turning black metallic.

  7. #7
    Rippin da fAt
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    Quote Originally Posted by ZenDen View Post
    Thanks everyone.., back to the drawing board
    Put the dry erase marker down!! Look into the maker of the hubs and check with the loco bike shop. That can save you from having brake alignment issues as well as simplify the process.
    Get fAt, Stay fAt, Ride fAt
    Doctor recommended...

  8. #8
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    Seems you just need the properly sized adapters. See the pull-down menu here:

    FB-1110 Elite Rear Axle Adapters
    --------------

    [WTB] 1987 Cannondale SM800, 20", Pink with airbrushed graphics.

  9. #9
    Thingamejigger
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    Quote Originally Posted by J_Westy View Post
    Seems you just need the properly sized adapters. See the pull-down menu here:

    FB-1110 Elite Rear Axle Adapters
    Yes, $20, done!

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