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Need information for 1991 Trek 2100 front end update.

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Need information for 1991 Trek 2100 front end update.

Old 06-16-15, 12:44 PM
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Need information for 1991 Trek 2100 front end update.

I'm wanting to switch from a quill setup, to a newer carbon setup with a stem. I've not attempted this before. I'm assuming all I need to do is acquire a carbon fork, that has the same diameter steerer tube, and that is sufficiently long enough to allow it to go through the head tube, and leave enough room on top to attach the stem. But alas, what diameter is my steerer tube? I can't seem to locate that information. I would also prefer the rake to be more pronounced, placing the front tire slightly more forward than the current setup, but I'm not sure what the current rake is. If anyone knows this info or where to get it I would very much appreciate it, thank you. I could take it apart and measure myself, but I'd still feel better if I found documentation on this to confirm.
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Old 06-16-15, 01:12 PM
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Old 06-16-15, 01:29 PM
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I didn't look at the documentation, but I have looked at forks for my 84 760 and found that most available are 43mm. Google is your friend.
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Old 06-16-15, 02:45 PM
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Most new 'threadless' forks come a standard length and have to be cut to size. You also need a new "threadless' headset.

A '91 Trek road bike should be 1"
Bianchis '87 Sport SX, '90 Proto, '90 Campione del Fausto Giamondi Specialisma Italiano Mundo, '91 Boarala 'cross, '93 Project 3, '86 Volpe, '97 Ti Megatube, , '90 something Vento 603,

Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '09 Motobecane SOLD, '?? Jane Doe (still on the drawing board), '90ish Haro Escape
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