Old 07-17-20, 09:27 AM
  #27  
bikeinxs
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Join Date: May 2008
Location: Ottawa, Canada
Posts: 146

Bikes: Ibis Cousin It converted to a drop bar dirt road cruiser, True North Ti Tandem, garage full of half bikes

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I was wrong. The max chainring is 40 teeth.

https://www.bike-components.de/en/Sh...illeur-p44318/

There are ways to get around this. At least one tandem builder makes a modified derailleur hanger that tilts the derailleur so it works with a bigger chainring. You can also build a tapered shim. I explored this but decided I would rather go with the double.
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