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.