Go Back  Bike Forums > Bike Forums > Singlespeed & Fixed Gear
Reload this Page >

Slipping brake levers

Notices
Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

Slipping brake levers

Old 03-04-14, 03:20 AM
  #1  
europa
Grumpy Old Bugga
Thread Starter
 
europa's Avatar
 
Join Date: Oct 2006
Location: Adelaide, AUSTRALIA
Posts: 4,229

Bikes: Hillbrick, Malvern Star Oppy S2, Europa (R.I.P.)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 370 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
Slipping brake levers

I've got a pair of Tektro brake levers, the road brake type with hoods. They're mounted on the alloy handle bars that came with my Europa back in the eighties.

I can't get the rotten things stay in place. They only drift, it's not as though they're dangerous, but it's bloody annoying having to reset them periodically. Just to rub it in, the same model brake levers on the Hillbrick (new bars) are so solid it feels like they've been welded in place.

I've tried the "grab the allen key with a pair of pliers and ask your tame gorilla to reef them up tight" method. I've also tried swearing at them with the brake levers being Asian of some sort and the bars being Italian, I'm really not sure which swear words to use.

Any suggestions? I've heard of putting some sort of shim under the clamp but can't remember what sort it was.
europa is offline  
Old 03-04-14, 05:28 AM
  #2  
Cyril 
Senior Member
 
Cyril's Avatar
 
Join Date: Jul 2009
Location: Southwestern, Ontario
Posts: 958
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Liked 1 Time in 1 Post
Maybe a bit of inner tube?
That should provide some grip.
Cyril is offline  
Old 03-04-14, 06:14 AM
  #3  
FWM
Junior Member
 
FWM's Avatar
 
Join Date: Aug 2013
Location: Norwich, UK
Posts: 18

Bikes: Wabi Lightning SE

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by europa View Post
some sort of shim under the clamp
perhaps a strip of beer can…?
FWM is offline  
Old 03-04-14, 09:55 AM
  #4  
RoadTire 
Senior Member
 
RoadTire's Avatar
 
Join Date: Mar 2012
Location: Minnesota
Posts: 1,968

Bikes: '09 Trek 2.1 * '75 Sekine * 2010 Raleigh Talus 8.0 * '90 Giant Mtb * Raleigh M20 * Fuji Nevada mtb

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Are they twisting / rotating sideways or sliding down the bar? I think mine will rotate a little if I actually try, but haven't noticed any slippage. I agree you should shim them with metal or firm rubber. Failing that you might need a clamp on the bar under the Tektro clamp to keep it from slipping down.
__________________
FB4K - Every October we wrench on donated bikes. Every December, a few thousand kids get bikes for Christmas. For many, it is their first bike, ever. Every bike, new and used, was donated, built, cleaned and repaired. Check us out on FaceBook: FB4K.

Disclaimer: 99% of what I know about cycling I learned on BF. That would make, ummm, 1% experience. And a lot of posts.
RoadTire is offline  
Old 03-05-14, 03:45 AM
  #5  
europa
Grumpy Old Bugga
Thread Starter
 
europa's Avatar
 
Join Date: Oct 2006
Location: Adelaide, AUSTRALIA
Posts: 4,229

Bikes: Hillbrick, Malvern Star Oppy S2, Europa (R.I.P.)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 370 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
They twist and slowly move down.
I'm pretty sure the cure was a metal shim, though I can't for the life of me see how that'd help. Something to try anyway.
europa is offline  
Old 03-05-14, 08:38 AM
  #6  
TejanoTrackie 
Veteran Racer
 
TejanoTrackie's Avatar
 
Join Date: Jul 2009
Location: Ciudad de Vacas, Tejas
Posts: 11,237

Bikes: 29 frames + 72 wheels

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 746 Post(s)
Liked 42 Times in 26 Posts
The first thing I'd suggest is to measure the diameter of the handlebars to see if they are at least 23.8mm, which is the size of the clamping band on the levers. If your handlebars are somehow smaller, then no amount of tightening is going to help.

Another possibility is that you have cracked or damaged the plastic brake lever housings through overtightening. Also, check to make sure the clamp bolts aren't bottoming out on the handlebar.

If you have installed the levers on a portion of the handlebar which has a high curvature (tight radius), the brake lever housings might not seat properly, resulting in slippage.

FWIW, the only time I've experienced brake lever slippage problems has been with carbon handlebars, where I couldn't over tighten the clamps due to the possibility of damaging the bars.
__________________
What, Me Worry? - Alfred E. Neuman

Originally Posted by Dcv View Post
I'd like to think i have as much money as brains.
I see the light at the end of the tunnel, but the tunnel keeps getting longer - me
TejanoTrackie is offline  
Old 03-05-14, 08:53 AM
  #7  
Steev
Senior Member
 
Steev's Avatar
 
Join Date: Jul 2005
Location: Backwoods of Ontario
Posts: 2,152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have some old (probably 80's vintage) steel drop bars that are less than 23.8mm. Probably 22.2mm, but my caliper battery has died so I can't go and check.
The few levers I have around have a diameter stamped on the band.
Steev is offline  
Old 03-05-14, 11:39 PM
  #8  
europa
Grumpy Old Bugga
Thread Starter
 
europa's Avatar
 
Join Date: Oct 2006
Location: Adelaide, AUSTRALIA
Posts: 4,229

Bikes: Hillbrick, Malvern Star Oppy S2, Europa (R.I.P.)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 370 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
This might explain the suggestion to add a shim. Will do so, I have to rewrap the bars anyway.
europa is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Celeste Mike
Bicycle Mechanics
9
03-05-18 09:43 PM
timmythology
Bicycle Mechanics
2
06-09-14 07:15 PM
genjy
Singlespeed & Fixed Gear
11
02-04-12 12:21 PM
Bianchigirll
Bicycle Mechanics
11
04-29-10 10:16 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.