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Originally Posted by
ScottCommutes
Very, very cool to see the diagrams.
I did not appreciate that a front derailleur has to work on the tight part of the chain while the rear derailleur can work on the slack part of the chain.
You are not alone in not looking at the gear system as an upper and a lower split. I began teaching how to shift classes with this tensioned top half and un tensioned lower half a long time ago. Andy
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AndrewRStewart