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

Best Black Friday E-Bike Deals 2024 | Up to $1,700 in Savings

New: Take Part in the November Giveaway: Starts November 18th


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
 
18,186
02-08-2010, 09:06 PM
Last Post: DaveM

Forum Jump:

[-]
10 Latest Posts
Moving in Style: Beyond Regular Transpor...
Today 07:43 AM
Second wheelset for ebike.
Today 01:41 AM
Tire Sizing (Or How to Buy A Tire)
Yesterday 12:36 PM
The Roaming Radrunner Vlog 1 Why ride ...
Yesterday 09:17 AM
Recording Bike Rides
11-20-2024 01:37 AM
Ketone Ester $$$
11-19-2024 01:04 AM
Trek domane tyre
11-18-2024 01:58 PM
Old fossil buys Ebike
11-17-2024 06:39 AM
Bike bus
11-17-2024 12:14 AM
Humber "Eiffel Safety" bike 1800s
11-16-2024 03:05 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. Jesper
22 posts
no avatar 2. enkei
19 posts
no avatar 3. GirishH
14 posts
no avatar 4. ReapThaWhirlwind
11 posts
no avatar 5. Flowrider
11 posts