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Discussion Starter · #1 ·
One thing that i like looking as on facebook there is this group called funny side of bike mechanics.

well anyway there is usually a fair share of screwed up rigs, but what is really interesting is odd group-sets or drive trains.

Well i saw an odd sram invention. Sram dual drive, a 3 speed hub and 9 speed cassette.
Sram Dual Drive 27 (2011)
Motorcycle accessories Carbon Iron Machine Nut Bicycle part Bicycle accessory White Bicycle Bicycle handlebar

What is the weirdest drive train you have seen?
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