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Questions tagged [brake-levers]

Hand control for actuating your bike's brakes.

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11 votes
2 answers
28k views

What is the actual cable pull of brake levers?

I understand that there are 2 brake lever cable pull standards: Standard Pull Levers Long Pull Levers (for V-brakes and disc brakes) But what is the actual difference in pull? And specifically: what ...
Duvrai's user avatar
  • 213
4 votes
1 answer
8k views

Use of Shimano long-reach calipers with "New Super SLR" brake levers/shifters

So my bike has Shimano Tiagra ST-4600/4603 brifters (it's a triple) but is fitted with long-drop BR-R451 calipers. In theory, these should be incompatible because of the change in cable pull ratio, ...
jbuk's user avatar
  • 231
5 votes
5 answers
13k views

Braking on a vintage road bike

I recently bought a vintage Gitane road bike. I understand that in the 70s and 80s they sold a lot of these road bikes with drop handle bars. Sometimes they came with the extra lever for an easier ...
J. Doe's user avatar
  • 51
9 votes
1 answer
923 views

Shimano Dura-Ace R9120 lever leaking

My bike's Dura-Ace R9120 rear-brake/front derailleur shifter (left shifter in UK) leaks brake fluid when I pull hard on the lever. It leaks from this specific place: I understand this lever is ...
Paul Suart's user avatar
9 votes
3 answers
12k views

Can a Shimano XT (mountain) hydraulic disc brake caliper be used with an Ultegra STI road brake lever?

Specifically, is the XT BR-M8020 mountain caliper compatible with an Ultegra hydraulic road brifter like like the ST-R8020 or ST-R8070? I have confirmed that they both use BH90 brake hose ("high ...
John McD's user avatar
  • 175
5 votes
3 answers
3k views

Switching the position of brake levers for a bike ordered from another country

I purchased a bike from Germany and I noticed the front brake lever is on the left and the back brake level is on the right. I'm from the UK, and all the bikes I've ever ridden have had a setup that's ...
LondonGuy's user avatar
  • 235
5 votes
1 answer
618 views

cleaning v-brake arms with riveted inner sleeve

I've got avid single digit 5 v-brakes, those with an inner sleeve riveted into the arm; the sleeve isn't supposed to move around the pivot, the arm itself moves around the sleeve instead. Arguably due ...
Xpector's user avatar
  • 327
4 votes
4 answers
8k views

Hydraulic disc brake - lever compatibility

I purchased a gravel bike with drop handlebars, mostly for commuting and maybe for some weekend bike camping trips. I've only ever ridden mountain bikes with flat bars in the past, but I figured I'd ...
Thomas's user avatar
  • 41
4 votes
1 answer
2k views

Short Pull Brake Levers

The brake levers on the bike for my son are too far apart for him to grab comfortably; can the lever be changed to adjust for his smaller hands? His bike is a Magna Hardtail with a linear pull system. ...
Otis's user avatar
  • 41
3 votes
4 answers
6k views

How to mount TT shifters and TT brake levers together?

I am starting a new project to build a custom bike with bullhorn handlebar. It'd most likely be made either with road or hybrid type of frame. I am planning on having both front and real derailleurs, ...
Boris's user avatar
  • 197
3 votes
2 answers
2k views

Can I replace my rear cantilever brake with a caliper brake?

Can I replace my damaged rear cantilever brake with a caliper brake? I assume there are two things to consider: frame and lever. Frame The frame has a black, hook-shaped part, which I believe Sheldon ...
pateksan's user avatar
  • 2,364
3 votes
2 answers
4k views

Grip diameter of a riser bar?

I bought a riser bar (Easton EA30) and I want to buy grips and brake levers to put on it. I know the clamp diameter is 31.8mm, but how do I figure out the bar end diameter? I don't have a caliper to ...
Alessandro Cosentino's user avatar
3 votes
1 answer
338 views

How much cable can I pull with a brake lever in another custom mechanism, and how can I achieve it?

I am not sure if this is the correct community for the answer, but since this part is about a bicycle part, I thought it's okay. If this is better posted in physics, or anywhere else, please let me ...
FairLight's user avatar
2 votes
2 answers
3k views

Is losing power when pulling Shimano GRX lever a bleed problem?

Recently I had an accident on my bike, and my front brake 11-speed, front brake GRX 600 shifter isn’t braking well anymore. The shifter took a bit of damage in the fall. Initially it didn’t shift, ...
spikeheap's user avatar
  • 123
1 vote
1 answer
2k views

Unable To Adjust Mechanical Disc Brakes Properly

I have a very puzzling problem with the front mechanical disc brakes on a big-box retailer mountain bike. Nothing fancy, and it used to work well for over a year but since I last dismantled it to ...
user3227564's user avatar