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Old 09-09-04, 09:28 AM   #1
spindle
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brake-lever integrated shifters

so downtube shifters, thumb shifters, bar end shifters, they all seem to work on pretty much the same principle and to make a good deal of sense. brake-lever integrated shifters, though, how the hell do they work? could someone please explain what's going on inside those things to this curious individual? thanks.
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Old 09-09-04, 09:45 AM   #2
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Originally Posted by spindle
so downtube shifters, thumb shifters, bar end shifters, they all seem to work on pretty much the same principle and to make a good deal of sense. brake-lever integrated shifters, though, how the hell do they work? could someone please explain what's going on inside those things to this curious individual? thanks.
Same principle: levers pull or release cable tension. It's just the way they are jury-rigged to do this that's different. Generally speaking, there's a ratchet mechanism which spools the cable up as you push on a lever. Then there's a clutch, pawl or ratchet-stop of some sort that can be released to slacken the cable. The only "tricky" part is packaging it all into a compact enough space with the proper linkages to allow you place everything into one unit.
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Old 09-09-04, 09:54 AM   #3
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Old 09-09-04, 06:31 PM   #4
John E
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Originally Posted by khuon
... The only "tricky" part is packaging it all into a compact enough space with the proper linkages to allow you place everything into one unit.
The REAL trick is making them reliable and durable. I'll keep my 45-year-old Campag. friction downtube levers, thank you.
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