Thread: New Math (Frame Geometry)
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Old 06-28-12 | 12:05 PM
  #17  
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ColinL
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Joined: Jul 2011
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From: Wichita

Bikes: Santa Cruz Blur TR, Cannondale Quick CX dropbar conversion & others

Originally Posted by guadzilla
So since you are a math genius, quick - what is the fore-aft difference between a 72.5 degree STA and a 74 degree STA on a 82cm seatpost (BB to saddle top), which is longer than what most people will ride?

And what is the length of a typical saddle rail?


I agree with you, GZ. Head and seat tube angles, and chainstay length affect handling but NOT fit. Fit is all about stack and reach. Effective top tube length is hugely important in determining reach.
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