Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take Part in the March Giveaway: Coming Soon 3/24


Down Shifting intermittent
#1
I have a TREK road bike I got used with some Shimano shifters. I'm not sure the model, but they're maybe 10 years old. It's the type of shifter that has the break and shifter all in 1. I move the whole thing inward to shift the front derailleur up to the big chainring. And flick the smaller lever to shift down.

Lately going from the bigring down to small has been difficult. Sometimes I have to flick it 10-20 times before it clicks. I've tried adjusting everything, and I've noticed that it doesn't move the cable at all...there's no slack in the cable at all.

Once it gets into the small ring, i can upshift with no problem at all. That leads me to the innerworkings of the shifter, but there doesn't seem to be much to adjust there.

I'd like to learn how to fix it, but I seem to be coming up short. Any advice would be greatly appreciated.

Doug
  Reply
#2
I'm guessing there might be some gunk inside the shifters that is causing them to mis-shift. <a href="http://bikeride.com/rapid-fire-shifters/">This video</a> may help understand what may be causing the problem. It's a completely different shifter but the same concept.

If that's not the cause, some of your shifter parts may actually be worn. It might be a good idea in this case to stop by your local bike shop and see if they can diagnose the problem better.
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
17,221
02-08-2010, 09:06 PM
Last Post: DaveM

Forum Jump:

[-]
10 Latest Posts
What tools have you bought recently?
Yesterday 06:57 PM
Santini fluted frame
Yesterday 06:47 PM
Expensive bikes with crappy wheels
Yesterday 10:15 AM
Where are you from and What is your favo...
03-27-2024 11:43 PM
2007 Trek Pilot S.P.A. 5.2
03-27-2024 07:06 PM
2010 Specialized Hardrock
03-26-2024 09:16 PM
1990 Specialized Rockhopper How to Fluff...
03-25-2024 07:05 PM
Thread busted on right pedal crank
03-24-2024 08:52 PM
Trek domane tyre
03-24-2024 05:48 PM
Modern rims crack at spoke holes
03-24-2024 05:32 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Painkiller
21 posts
no avatar 2. ReapThaWhirlwind
16 posts
no avatar 3. Jesper
15 posts
no avatar 4. GirishH
15 posts
no avatar 5. meamoantonio
15 posts