Skip to main content

Questions tagged [caliper]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
2 votes
1 answer
162 views

How to diagnose and fix a mechanical disc brake rotor that is bent

I have a 2022 GT Aggressor with mechanical disc brake rubbing on the rear wheel. I tried realignment of the caliper several times and I got the wheel trued. But my brakes still rub in one spot. Does ...
Alison's user avatar
  • 1,267
0 votes
2 answers
64 views

brake rotor offset inconsistency

I previously ran a promax 160mm rotor with a BB7 avid brake caliper. My rotor is spent and is not braking correctly. The tech suggested I used a Shimano ice-tech disk. It seems to me that, relative to ...
AdamO's user avatar
  • 387
7 votes
1 answer
438 views

How can I keep my brakes centered?

If I move the brake device by hand, I can get it centered. However, after riding a bit I guess the bumps of the road shift it either to the right or left, causing either the right or left brake pad to ...
John's user avatar
  • 237
1 vote
2 answers
56 views

Which brake levers and brake calipers to replace Sram s-series HRD700 (postmount)?

I own a Giant TCX SLR 1 from 2014, with Sram s-series HRD700 brakes (post mount right?) and 10 speed sram force transmission. Discs are 140mm rear and 160mm front. My brakes are completly gone and I ...
Petitek's user avatar
  • 13
1 vote
2 answers
136 views

Rusty bolts/screws on Shimano Claris brake calipers

I've spent a number of hours 'deep cleaning' my Giant Defy 4 road bike and it looks really good.... with the exception of the rust which is visible on the brake caliber screws/bolts. Are they ...
Anthony's user avatar
  • 11
4 votes
4 answers
561 views

How to prevent disc brake caliper from slipping while tightening caliper mount screws?

While adjusting disc brakes, I often find that the caliper body slightly slides sideways when tightening the mounting screws. It is sometimes due to sticky washers, but I also encounter this issue ...
le petit prince's user avatar
2 votes
1 answer
218 views

Replacing Tektro MD-M280

I have a Lectric 2.0 ST ebike and it seems it is hard to find a good replacement for its Tektro MD-M280 calipers. I was wondering if the Tektro MD-C550 could be better as this model is dual piston but ...
Jose's user avatar
  • 121
5 votes
1 answer
368 views

Facing flat mount fork

Front brake on one of my bikes has always been near impossible to adjust. Since it is my first bike with flatmount calipers I thought that this is just specific to flat mount brakes. However recently ...
Art Gertner's user avatar
  • 2,837
2 votes
1 answer
246 views

Shimano 105 Disk Brake Failure

While bleeding my Shimano 105 hydraulic rear disk brake (BR-R7070) the seal around one of the caliper pistons failed. I was following the Shimano dealer manual meticulously and I had only just done ...
Brad's user avatar
  • 21
2 votes
4 answers
564 views

I was leaning the bike against the wall

I have a quite a new bike (aluminium frame) and I came home after a ride and when I was leaning a bike against the wall I hit the brake caliper (or more like the tube, that's next to it) against the ...
Simon's user avatar
  • 21
2 votes
2 answers
266 views

Shimano BR-MT400 caliper upgrade?

After 2 years calipers no longer retract fully (pistons) causing annoying rubbing sound. What options do I have to upgrade it (perhaps something more durable) providing I still want to reuse the same ...
Pekotski Bit's user avatar
4 votes
1 answer
495 views

Brake piston fell out during bleeding - anything to fix?

When bleeding a brake, I did not insert the correct spacer, pushed the lever too eagerly, and the piston fell out (and the oil was on the floor). Is there anything to fix after this besides just ...
Konstantin Shemyak's user avatar
7 votes
2 answers
2k views

Caliper brake lubrication

Good day all, I have a question about caliper brake maintenance. Occasionally, my caliper brakes remain a little "stuck" closed, in that I have to manually open them/spread them back out in ...
Andrea's user avatar
  • 417
4 votes
1 answer
427 views

What's the significance of "Inside" vs "Outside" caliper hose connection?

When Shimano rolled over from the "x000" series mtb brakes (e.g. 6000, 7000, 8000) to the x100 series, one thing that changed is where the hose connects to the caliper. Before, it was on the ...
Fragrant_Mechanic's user avatar
0 votes
1 answer
829 views

Why is there no pressure in brakes after leak?

I made a mistake when trying to align the caliper to correct for the disc rubbing against the brake pads. Instead of unscrewing the bolts mounting the caliper body to allow adjustment, I unscrewed the ...
lost_M's user avatar
  • 1
2 votes
1 answer
1k views

Schwinn Kids Bike brake caliper spring not attached. Help!

I recently ordered a child bike for my daughter as a Christmas present. The hand brake caliper was not assembled with the brake spring in place. Based on my basic understanding of how this works I ...
Andrew's user avatar
  • 123
3 votes
3 answers
774 views

What limits the rotor size in flat-mount brakes?

Let's consider Shimano BR-RS305 caliper. The only numbers which are floating around are 140 mm and 160 mm for the rotor. My question is -- what stops this caliper from using 180 mm or bigger rotor? ...
greenoldman's user avatar
  • 2,064
1 vote
1 answer
149 views

Is overhauling dual-pivot caliper brakes due when the centering screw is ineffectual?

The balancing/tensioning/centering screw on my rear dual-pivot (rim) caliper brakes is no longer effective. Is it a good idea to disassemble the calipers down to individual pieces, say once every two ...
Sam7919's user avatar
  • 9,514
1 vote
1 answer
255 views

Role of a mysterious clip on a front brake caliper screw [duplicate]

I was doing some fork maintenance the other and noticed a strange clip that is mounted on one of the screws used to attach the caliper to fork. The pictures below show the clip in question. It really ...
Rеnаud's user avatar
  • 21.4k
3 votes
1 answer
1k views

Brakes rubbing on ride after centering, brand new bike

I recently purchased a new mountain bike. The brakes are Clark M2 hydraulic disc brakes. The bike came pre-assembled except for the pedals, handlebars, and front wheel. I don't see anything wrong with ...
justbrowsn's user avatar
1 vote
1 answer
305 views

Brake caliper not springing back all the way

I've got got some road caliper rim brakes which don't spring back all the way after pressing them. They go back 95% of the way but there is a tiny bit of left after that they can travel. (without the ...
Throwcake's user avatar
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
0 votes
1 answer
650 views

Shimano BR-RS805 hydraulic disc caliper alternatives?

I have a bike from early 2016 with Shimano BR-RS805 hydraulic disc calipers. These need to be replaced, but are discontinued, and newer road/cross/gravel offerings from Shimano use BH90 hoses, while ...
T0TTE's user avatar
  • 762