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PostPosted: Mon Mar 19, 2012 6:22 pm 
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Joined: Mon Feb 01, 2010 10:27 pm
Posts: 98
Location: STL
I've been using this http://alex.phred.org/stemchart/Default.aspx website to compare different stem angles to figure out how much difference there is between different stem angles/lengths. It seems to give pretty reasonable results but can anyone else speak to the accuracy of this model? For example, see my pic. Can I use a 6* stem + 10mm spacers to ditch the goofy cone spacer and 10* stem on my CAAD10 and still have the same bar position?


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PostPosted: Mon Mar 19, 2012 7:36 pm 
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Joined: Wed May 18, 2005 6:24 pm
Posts: 4446
Location: BELGIUM
The formula is simple:

Drop = sin(angle) * Length

a 110mm stem at 6 degrees has sin(6) * 110 = 11.498
same at 10 degrees = 19.1

The difference is the height to add or remove.

Note that your bars will also move slightly reachwise because of the steerer angle when adding/removing spacers.


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Posted: Mon Mar 19, 2012 7:36 pm 


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PostPosted: Mon Mar 19, 2012 7:49 pm 
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Joined: Sun May 10, 2009 3:31 pm
Posts: 445
Location: Russia, Moscow
helios wrote:
It seems to give pretty reasonable results but can anyone else speak to the accuracy of this model?

Yes, it a convenient and accurate stem calculator.


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