D
David Mackintos
Guest
I've been having a bit of trouble with my first-gen (~1992) Shimano 600 STI rear shifter
lately (probably either gummed up, or just worn out), which got me thinking about indexed
shifting in general.
It seems intuitive that more precise, or less finicky, indexing could be achieved if the ratcheting
mechanism was built into the rear derailleur rather than the shifters. I haven't thought much about
how this would be implemented, but was wondering if it had been tried (on a mechanical system). The
main disadvantages of the current system seem to be the reliance on constant cable tension to
maintain rear derailleur position, and the effects of cable stretch. I would think both of these
problems could be avoided if the cable was only required to tell the rear derailleur to drop down a
cog, or provide the power to rise up a cog.
-David
lately (probably either gummed up, or just worn out), which got me thinking about indexed
shifting in general.
It seems intuitive that more precise, or less finicky, indexing could be achieved if the ratcheting
mechanism was built into the rear derailleur rather than the shifters. I haven't thought much about
how this would be implemented, but was wondering if it had been tried (on a mechanical system). The
main disadvantages of the current system seem to be the reliance on constant cable tension to
maintain rear derailleur position, and the effects of cable stretch. I would think both of these
problems could be avoided if the cable was only required to tell the rear derailleur to drop down a
cog, or provide the power to rise up a cog.
-David