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  1. #1
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    135/5 -> 142/12 endcap conversion gave me boost 148/12dimensions

    So, I wanted to throw my 370 DT Swiss hubs into my new 142/12 frame. I bought suitable DT Swiss endcaps, put the on the hub, and surprise, I got 148/12 and I can't fit the wheel into the frame.

    What happened here? Either the hub has some special dimensions (unlikely) or the seller gave me wrong endcaps. Anyone has any info on these endcaps dimension? By comparison Is the only way I can figure this out...


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  2. #2
    West Chester, PA
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    You either have the wrong end caps or they're not pressed on all the way.

  3. #3
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    135/5 -> 142/12 endcap conversion gave me boost 148/12dimensions

    Ok, this is weird. The new end caps for 142/12 measure exactly 29 and 16 mm against old ones 135/5 which are 25.5 and 12.5 respectively. So, New ones are in total 7mm wider, as expected.

    I've put them on the hub and total hub width is 148 mm. It does not make any sense... Also, drive-side end cap extend about 3 mm further from the hub, the non-drive side end cap is also fine as I fitted the brake on the frame with one endcap installed.

    Yet somehow, both endcaps give me extra 6 mm of width which does not make sense and makes me feel like an idiot...

  4. #4
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    Are you sure that the 370 is convertible to 142? I thought, at least at one point, that they were not. I know the 340 quick release (predesesor to the 350) were not. Depending on the vintage, that could be your issue.

  5. #5
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    Ok. It's all clear now. I found my answears in this thread.

    My hub is a DT Swiss 370 Boost with QR end caps. They give the spacing of 141 mm.

    How did that fit into a 135 frame? No problem.

    Adding 135->142 conversion caps (+7 mm) gave a 148 boost dimensions.

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