Thread: Triple chainrings
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Old 05-03-12 | 10:37 PM
  #37  
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Ritterview
Tandem Vincitur
 
Joined: Sep 2005
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From: Northern California

Bikes: BMC Pro Machine SLC01, Specialized Globe, Burley Rock 'N Roll tandem, Calfee Dragonfly tandem.

Originally Posted by rhino919
Ritterview - any chance of you taking a comparison picture of the DA vs Praxis chainring shifting features? A similar shot to the PEZ picture would be great!
Uh, not tonight! I've got to pack up and get ready for the Wine Country Century on Saturday! We will be leaving directly from work tomorrow.


Here's a pic from CyclingNews showing the Dura Ace outer chainring shifting features.


Ramps and pins on a Dura-Ace chainring mean the highest-force shift, between chainrings, still needs sufficiently low effort that the motors and battery are not unduly taxed.


Here is a Praxis.

Last edited by Ritterview; 05-03-12 at 10:55 PM.
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