650B Conversion

http://sheldonbrown.com/650b.html

http://www.rivbike.com/kb_results.asp?ID=64

http://lovelybike.blogspot.com/2011/03/creamy-dreamy-650b-conversion.html

http://www.bikeman.com/bikeman-blogs/650blog/1771-650b-conversion-guidlines

http://lovelybike.blogspot.com/2010/09/full-fat-cream-grand-bois-hetre-tires.html

http://sdbikecommuter.com/forums/comments.php?DiscussionID=478

http://sdbikecommuter.com/forums/comments.php?DiscussionID=478

http://www.bikeforums.net/archive/index.php/t-787858.html

http://www.bikeforums.net/archive/index.php/t-664804.html

http://www.bikeforums.net/showthread.php/536222-650A-vs-650B-trying-to-make-sense-of-it-all

--

--

Centurion Le Mans Conversion

http://www.bikeforums.net/archive/index.php/t-485015.html

http://www.flickr.com/photos/murphjam2/3016172097/in/photostream/

http://www.bikeforums.net/archive/index.php/t-485015.html

--

Okay, what is 650B? Besides being regarded with much unconfirmed mysticism and Francophilium, it is simply a rim with a diameter of 584mm. Standard 700C rims are 622mm. This difference of 38mm allows wider tires and other paraphernalia to be stuck on older racing bikes.