Andy Vrakas said:Hello,
I want to convert my trusty Trek to STI (as cheaply as possible if
that needs to be said). It has mainly 105 components, but the
derailures are DeoreDX - 7 speed rear and triple in front with sis
levers. 1) will any seven speed shifter work? (I assume it must be
a seven speed, not _at least_ as seven speed?) I have seen some used
105s, Ultegras and something called a Tiagra or thereabouts. 2) Have
you heard of a device called the "Gizmo" that converts a left double
lever to a triple? Do they work or should I go find a triple lever?
Also, what else might I be overlooking that I will need? New cables,
right? They are special cables for STI? Anything else. I know enough
about bike mechanics to screw this up bad, but I want to give it a
shot and make an affordable upgrade....Thanks in advance for your
brilliant advice! Andy
I was just asking myself the same question. How about Sora ? There's a
picture on the page-
from http://sheldonbrown.com/harris/shifters.html
Shimano SORA 7-speed STI brake/shifter units $129.95
An excellent upgrade for older bikes. They are compatible with all recent
Shimano rear derailers, all 7-speed freewheels/freehubs. Sora brifters use
the main lever to shift to larger sprockets, but have a small thumb button
to shift to smaller sprockets, similar to Campagnolo ERGO.
Sora and R600 brifters are the ONLY drop bar brake levers available that
feature a reach adjustment. This makes them a particularly excellent choice
for cyclists with short fingers. These sets include all 4 cables, and cable
stop adaptors that fit standard down-tube shifter mounts
