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I have a Trek T-900 tandem that I bought used. It's probably about 12 or 13 years old.

I'm having some rear hub issues with it, but I can't identify what hub it is. Trek's website and other searches just say "Alloy Hub". I don't even know for sure if the spacing is 145mm or not.

I'd like to identify the hub, because it needs a new cone. If that's not possible, I'd like to verify the spacing (I don't have calipers) so I can have a new wheel built.

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    A ruler works for me – paparazzo Sep 8 '14 at 17:58
  • sheldonbrown.com/frame-spacing.html - use a ruler and measure it, or just take it to the shop. – Batman Sep 8 '14 at 18:39
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    This might go without saying, but you'd be fine just taking the wheel in to the shop. No reason to drag the whole bike in. – stranger Sep 8 '14 at 19:09
  • I'm still unable to identify the hub, but the spacing is 145mm. It appears to be a 135 hub with spacers on the non-drive side. I guess a new wheel build is in order. – David Crowell Sep 9 '14 at 23:41
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I've verified that the hub spacing is 145mm - standard for a tandem. The hub on the bike is unmarked, unbranded, and Trek's website simply lists it as "alloy hub". It appears to be a 135mm hub with a longer axle and spacers in place.

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Hi I actually have the same tandem bought from e-bay (UK) around a year ago a bit battered. I have replaced both front and back wheels with usual 26" Shimano Deore mountain bike wheels from my local bike shop. Replaced lots of other stuff as well.

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  • Welcome to Bicycles SE. We're looking for answers with more detail. The OP is asking for specs on this bike. If you have that information, please edit it into your answer. – jimchristie Dec 9 '14 at 20:30

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