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SRAM E-matic

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Tom Cole:
Something I saw on an ebike recently.  They had exchanged the sprocket for a toothed pulley and ran a belt from the pedal chainring (beltring???).  Internal controller give electric assist type throttle and automatic gear shifting with I'm assuming is an internal planetary gear system.  Interesting.  Also has a battery and rack to complete the system.  Just bolt it on, plug it in, and ride.
https://www.sram.com/sram/urban/products/sram-e-matic

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