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Indexing at the derailleur -- what's old is new?

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Indexing at the derailleur -- what's old is new?

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Old 08-24-17, 11:30 AM
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icepick_trotsky 
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Indexing at the derailleur -- what's old is new?

I was reading a writeup on the new Rotor Uno hydraulic groupset. Truly wild stuff. Uses hydro lines instead of cables for the derailleurs. Rotor Uno: First ride review | Cyclist

What struck me was that the indexing functions are at the derailleur, not in the shifter. Didn't Suntour have a couple derailleurs that worked that way?
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Old 08-24-17, 11:31 AM
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Isn't that how Positron worked?
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Old 08-24-17, 11:59 AM
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Originally Posted by icepick_trotsky
I was reading a writeup on the new Rotor Uno hydraulic groupset. Truly wild stuff. Uses hydro lines instead of cables for the derailleurs. Rotor Uno: First ride review | Cyclist

What struck me was that the indexing functions are at the derailleur, not in the shifter. Didn't Suntour have a couple derailleurs that worked that way?
We've been there haven't we. We'll see how this all works out.
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Old 08-24-17, 12:01 PM
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Wasn't there also a compressed air system for downhill MTBs a while back too?
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Old 08-24-17, 12:08 PM
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Shimano positron with the single-strand wire did indeed have the index by the derailer.
As did Sachs Commander.
Positron might have been more successful if they hadn't used markings on the shift lever - which never lined up to which gear the chain was on.

Last edited by dabac; 08-24-17 at 12:11 PM.
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