Bike Forums - stem length vs angle

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procrit

06-01-09 12:52 PM

stem length vs angle

Are stems measured from 'center to center', or are they measured in horizontal distance. I know this doesn't make much of a difference with small angle stems, but with a 30° angle it could be a huge difference.

merlinextraligh

06-01-09 12:54 PM

It's center to center. You can calculate the actual reach, or use the chart:

http://www.habcycles.com/stemfit.jpg

umd	06-01-09 12:56 PM

Depends on the stem. Most seem to measure extension but for example 3T appears to use reach.

Jynx	06-01-09 12:58 PM

Quote:

Originally Posted by umd (Post 9021268)

Depends on the stem. Most seem to measure extension but for example 3T appears to use reach.

+1

although i think reach is stupid because bikes also have different head tube angles which changes reach again.

procrit

06-01-09 01:57 PM

Awesome thanks! I'll take my chances with the stems (other than 3t) being measure c2c.

umd	06-01-09 01:57 PM

Quote:

Originally Posted by Jynx (Post 9021288)

+1

although i think reach is stupid because bikes also have different head tube angles which changes reach again.

Yes, I think it is extremely stupid that 3T measures by reach...

procrit

06-01-09 02:34 PM

I guess I could start a new thread, but has anyone used a stem with only ~80mm reach on a TT bike? Just looking for anyone with anecdotal info on handling...

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