Thread: Most important fit measurements?
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Old 02-01-23, 06:02 PM
  #27  
smd4
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Bikes: 1989 Cinelli Supercorsa

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Originally Posted by Lombard
If you scroll down to geometry specs, you will see Cannondale and Trek don't agree with you:

https://www.cannondale.com/en-us/bik...napse-carbon-4

https://www.trekbikes.com/us/en_US/b...ode=white_grey

Look carefully how long the seat tube is on both of these size 56 bikes. Hint: It's not 56cm.
Modern bikes with sloping top tubes would be misleading if they used the actual seat tube measurement. My 58 cm Cinelli (seat tube, c to c) has a 56 cm top tube (c to c). If that was the size of my bike it would be way too small.

If you don’t get that a bike is primarily sized using a rider’s height and inseam to determine a size based on seat tube length, rather than torso/arm length and top tube, then I really have no words.
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