Thread: Bottom bracket - triple to double
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Old 01-12-11 | 02:24 PM
  #3  
Al1943
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Joined: Feb 2005
Posts: 9,438
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From: Oklahoma

Bikes: Trek 5500, Colnago C-50

The correct spindle length for your 7700 is 109.5 mm. You may be OK with the 113.
http://techdocs.shimano.com/media/te...9830646804.pdf
The ideal chainline for a double is 43.5 mm, center plane of bike to half way between the two chain rings.
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