"Joel" <[email hidden]> wrote in message
news:[email hidden]...
Quoted message said:I am building a project bike and have a pair of ST-7700 shifters left
over from another bike I upgraded to 10 speed. One of the reasons I
upgraded is that the right shift lever stopped working. Well I know I
am probably screwed but I installed the shifter on the project bike
and gave it the WD-40 flush but it did not help at all. It works ok
shifting up, but when I shift down the inner lever hangs up and won't
shift unless I hold the outer lever steady with one hand and push the
inner lever with the other hand then it works but not very practical.
Is there any way to repair this? I can't even find 9 speed STI levers
any more except used ones on ebay. Its hard to justify paying $300 or
more for new 10 speed shifters plus the cassette and who knows what
else to make it all work. I could get bar ends but don't really want
to do that.
Well, you have a couple of problems. First, the innards of a Shimano STI
lever is very complex. Further, there are no instructions on repairing.
Moreover, even if you could figure it out, small parts are non-existent. And
that's the good news.
Do a google search and look for Bill Cotton's STI repair instructions. There
is also a guy who took apart his 105 STI levers and has a write up on
cyclingforum.com tech section. I say good luck!
If you really want integrated shifters, then you may want to forget Shimano
STIs, and look into, yup, CAMPAGNOLO ERGO LEVERS. Not only are they
rebuildable, i.e., every small part is available at any LBS that has a QBP
account, but you can also find excellent instructions on how to rebuild it
too.
For instances, Andy Muzi's Yellow Jersey has the Campy ergo repair manual
and an excellent write up by Paul Southworth.
Prefer video? Then check out www.youtube.com, there's a couple of videos on
disassembling and assembling ergo levers.
For *less* than $300, you can get yourself a nice set of Campy ergo levers
(Veloce or Centaur quality) AND a Campy rear der. Think about it!