I need to know what the exact purpose of this system is.

Oct 18, 2008
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Sep 13, 2006
southern PA
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If it had a 3 speed cottered crankset from a cheap MTB, then it would have 30 speeds.

I don't even know why you would need that many speeds.
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On that note, a guy in our group has an interesting novelty...

It's a Cannondale Comfort 800. This bike came with an SRAM Dual Drive 24-speed system, which is a 3-speed internal hub with an 8-speed cassette stuck to the end of it. A previous owner decided to up the ante and install a triple front crank and front derailleur for a total of 72 speeds. Neat conversation piece if nothing else...