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

New: Take part in the June Giveaway for NAKTO Camel e-bike worth $739


Reconditioning Side pull caliper brakes
#1
I have a sidepull caliper brake that seems to not want to spring back correctly. When the brake is applied, it pulls the whole assembly to one side. I tried adjusting it the normal way, but that seems to not help. There's also a lot more wiggle room for the assembly (you can vibrate it a bit if you move it to not force it) than there should be. I tightened down the back nut of the brake assembly as much as I could, and got the front nut tightened down as much as I could against the adjustment nut, so it shouldn't be moving on its own...

I'm wondering what the next step is - as a stopgap I bent the spring back a little bit and it seemed to help slightly on moving the brake pad stuck to the rim back out like it should. Should I get a new spring (is that possible?) or should I be able to remove it and bend it outward on both sides in the vise without it breaking? Any other issues to check?
Why is it that they make adult bikes that'll generally work for 5'9" or above, yet when you pedal these same bikes they only work for someone who is 5'4" or so?
  Reply
#2
It sounds to me like you are saying that when you apply the brake and release, only one pad pulls away from the rim. If so, that means the whole caliper is not centered and not that there is a spring or bolt problem. This can be tricky because when you tighten the back nut, it tends to twist the caliper. Some calipers have flat spots for a centering tool to go on the piece that the spring passes through. It's usually a 10mm or 11mm size, but you need a thin wrench like a cone wrench to get in there.

If the whole caliper just doesn't pop open like it should, it could be a weak/worn spring. But could also just be a gummed up cable or that the pivots on the caliper need cleaning and lube.

If the arms have too much forward/back play, then the adjusting nut on the front is probably a bit too loose.
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Rode my First Double Century in June
Yesterday 10:50 AM
ZULIANI Oria 'helical' tubing 80s
06-30-2022 05:03 AM
NAKTO Giveaway June 2022
06-28-2022 03:52 AM
NAKTO GIVEAWAY
06-28-2022 12:16 AM
2022 road cycling season
06-27-2022 02:31 PM
OnGuard K9 Folding Plate Lock
06-27-2022 10:38 AM
Bike for commuters
06-27-2022 05:50 AM
Rim replacement for Old Cosmos SuperCors...
06-26-2022 11:24 PM
What was your first bicycle?
06-26-2022 07:18 PM
Identification help
06-25-2022 08:19 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
19 posts
no avatar 2. ReapThaWhirlwind
8 posts
no avatar 3. Yevhen
8 posts
no avatar 4. Munich Transfers
7 posts
no avatar 5. aliccon
7 posts