Friday, July 11, 2014

Expanding chainrings born again



These were made for many years and used for commuting successfully, but bike racers did not like them so they stop making them. Another perfect example of how the Racing industry has turned bicycles into a disposable aluminum junk yard.

All three of these were made differently.






                                         The new one:
http://www.vitalmtb.com/videos/member/Cool-Tech-VYROs-Multi-Segment-Gear-System,14722/bturman,109



Not sure about this one:










And one made by Browning:
http://www.bikeforums.net/classic-vintage/924521-browning-automatic-no-not-gun.html






The old ones made of steel were too heavy for modern man, weak form driving cars!! 



http://www.zoxed.eu/photos/bikes_drives.html






















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