Bicycle Mechanics - Can Sora shifters be used with older system?

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rcevans
03-27-07, 01:48 AM
Can I buy a set of Sora 7 speed shifters and use them on my 1990 Schwinn Prologue with a 7 speed 600 SIS system. It's still a 7 speed and set up for indexing. Does this work or do I need a different derailleur and freewheel spacing for the indexing to work?

cs1
03-27-07, 02:19 AM
It will work perfectly. Harris Cyclery sells a lot of them for that exact purpose.


Tim
BHBiker
03-27-07, 06:22 AM
yes it does. I used a 7 speed Sora for the 7 speed SIS

acorn_user
03-27-07, 04:12 PM
might need a new front mech though. I'm not sure that mechs expecting friction will work with indexing..
Sheldon Brown
03-27-07, 05:23 PM
might need a new front mech though. I'm not sure that mechs expecting friction will work with indexing..
This is an issue with triples, but doubles are MUCH less fussy.

Sheldon "Soraphile" Brown
Little Darwin
03-27-07, 07:05 PM
I'm glad I got confirmation, I was thinking of this exact thing for my bike... also 7 speed Shimano 600.

It is a good feeling to have your assumptions validated before buying. :)
DieselDan
03-27-07, 07:31 PM
You could just buy a right 7-speed Shimano brifter and use the downtube shifter for the front.