14
votes
Accepted
LBS won't Service Shimano Dual Control Lever
I've successfully destroyed several right-hand levers by attempting to fix them once they've started acting up.
One was a broken basket in the shifter, and I forget the actual failure in the others. ...
- 121k
7
votes
Accepted
How do barrel adjusters for v-brakes work?
Barrel adjusters push against the outer cable (cable housing). That's how they work both on gear and brake cables.
The appropriate use of barrel adjusters on all cable brake systems, whether ...
- 313
6
votes
How do barrel adjusters for v-brakes work?
All barrel adjusters act like a piece of adjustable cable housing and effectively increase or reduce the cable length. As pointed out by Nik, they are only intended for fine adjustments. The big ...
- 26k
6
votes
What tool do I need to adjust the brake cable here?
There is more than one way to adjust brake pad "tightness" (I'm assuming this means that the brake pads are too close to the rim).
To answer the question. Pictured is the brake cable anchor ...
- 20.6k
6
votes
LBS won't Service Shimano Dual Control Lever
The answer depends a little on the exact model and how deep you need to go.
In general the problem is that replacement parts aren't available new if something is broken, and if nothing is broken then ...
- 81.7k
5
votes
LBS won't Service Shimano Dual Control Lever
A small addition to this that I don't think has been fully covered:
Internal parts for Shimano shifters aren't available. As previously noted, they are also disturbingly difficult to disassemble. This ...
- 13.5k
5
votes
Help identifying and sourcing a part for Shimano brake lever
Just as a complement to Criggie's already valid answer, Shimano calls the "barrel adjuster" a brake cable adjusting bolt and nut. So specifically for the part you are asking for, that would ...
- 4,101
5
votes
Accepted
Help identifying and sourcing a part for Shimano brake lever
I'd call it a lock ring.
It is possible to buy a "barrel adjuster" like this, which will replace the hollow bolt and the lock ring.
Do be aware there are at least two thread sizes where the ...
- 121k
4
votes
Why is my brake lever loose on my hydraulic disc brake i took my wheel off and pressed the brake now the brake lever is loose and touches the grips
Oops! You should never squeeze the brakes while there is no disk between the pads. There's a plastic spacer available to slip between the pads when you have the wheel removed in order to safeguard ...
- 141
3
votes
Accepted
Identifying missing small part Campagnolo brake lever
It's called a "cable guide plate"
Part number 7283057 in the picture below
Searching for "campagnolo brake cable guide plate" will turn up results.
- 20.6k
2
votes
Dia-Compe Gran Compe shot lever - is there a fix for 31.8mm bars?
31.8 is the stem clamp diameter, this is known as oversized. The number that you are concerned with is usually 25.4 or 22.2. Further complicating this is that levers that mount almost up against the ...
- 339
2
votes
Mechanical bike disc brake caliper lever
The leverage curve that an individual caliper provides will never be published, but if you have the brake, you have the information. Take the pads out, poke a cable through so that the head is sitting ...
- 81.7k
2
votes
How do barrel adjusters for v-brakes work?
The reason barrel adjusters with V brakes don't work well is that V brakes are long-pull brakes. This means a given pad motion requires more pull from the cable. Their cable pull is about 2.2 times as ...
- 18k
2
votes
Why is my brake lever loose on my hydraulic disc brake i took my wheel off and pressed the brake now the brake lever is loose and touches the grips
Yes, this is something you shouldn't do with the hydrolic brakes. Don't press the brake lever when you take your tire off. How to fix it? Put the tire back on and keep pressing the brake lever. It ...
- 1,432
2
votes
Shimano 105 - Shifter Internal Lever Broken
If the entire lever remains in good condition, and just one part broke, it's commendable that you're trying to fix it rather than to just ditch it and replace.
The last few releases of Shimano 105 are:...
- 8,938
2
votes
Accepted
Shigura - Can i use a Shimano XT Lever on A Magura HS33 Hydraulic Rim Brakes
Maybe.
Magura strongly suggests using their "Royal Blood" brake fluid, whereas Shimano specifies Mineral Oil.
My understanding is that Magura's fluid is a variation of Mineral Oil but they'...
- 121k
1
vote
Accepted
Brake lever suddenly stuck due to an overtightened screw - what went wrong?
Those screws are the "reach adjustment" screws. They control the resting positions of the brake levers, ensuring they're easy to grab regardless of your hand size. Without them, the levers ...
- 15.5k
1
vote
LBS won't Service Shimano Dual Control Lever
If the tool is the one I'm thinking of, it mainly allows you to take the whole main assembly out of the lever. That assembly is available, at least for some models, as a spare, costing about the same ...
- 57.2k
1
vote
Can i replace just the brake on a bike that has a combined shifter/brake lever unit
I asume you have the complete brake system from you previous bike (Calipers, hoses and levers)
In order to complete the installation you would need to buy a set of 3x8 independent shifters, so you ...
- 12.4k
1
vote
Campagnolo 2x11 Record with GRX derailleurs
Each time you shift, the shifter pulls the cable a fixed distance (for Campy, the distance varies slightly, but functionally you can ignore this). That's called the cable pull. Then, for each mm of ...
- 29.5k
1
vote
Stripped reach adjustment screw on GRX RX 815 levers
If you've stripped the heads so the tool no longer turns them, you need to get them out somehow and measure the thread. This will probably be a common metric size. The small head (by the look of the ...
- 57.2k
1
vote
Identifying missing small part Campagnolo brake lever
Ideally buying the part would be easiest, but finding the part to buy could be a whole lot of work. Identifying a part number is your first task there.
If I was in this position, I'd try two ...
- 121k
1
vote
What and where is the weeping port on Shimano MTB brake levers?
Shimano has added a section to the dealer manual entitled "Replacing the diaphragm" regarding this issue. The replacement parts are difficult or impossible to obtain at the moment.
Also ...
- 188
1
vote
What and where is the weeping port on Shimano MTB brake levers?
The leak is because your membrane have a hole, it's probably that you have introduced a nail, a little stick or something that drill the membrane, the solution cover the hole, but you could have any ...
- 11
1
vote
What is the actual cable pull of brake levers?
The amount of cable pulled is half the answer to "what is the mechanical advantage of the lever?" The other half is how much did the lever move. This depends upon whether you are using your ...
- 246
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