Questions tagged [cable]

Bicycle brakes and shifters use Bowden cables to transmit braking/shifting forces from the hand controls to the appropriate place.

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4
votes
1answer
64 views

How much can bike shift cables spool, and over what radius?

Some shifter designs have become known for causing broken cables, anecedotally because they're causing too much repeat spooling and unspooling over too tight a radius. For example, broken cable heads ...
2
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3answers
713 views

Why does the rear brake bowden have no housing below the frame of the bike?

I observed that the bowden of the rear brake calipers runs "naked" below the bike frame. (Also the gear shifting cables, but let's focus on brake cables for this question.) (I.e. the section ...
6
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3answers
517 views

What is MTB/roadbike specific in brake cables?

Basically as the title says. Why won't a "roadbike" bike cable fit into an MTB, or vice-versa? Consider this one. What would happen if this was mounted in an MTB (or any other kind of bike)?
2
votes
1answer
295 views

Anyone seen a hollow crank spindle cut through by an internally-routed derailleur cable?

I just want to share a recent observation, but I have to pose it as a question. A person showed me an FSA Gossamer 30mm hollow crank spindle broken into 2 parts. The break looked almost as good as a ...
4
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3answers
379 views

Replacing a lost disc brake pinch bolt

While replacing the cable for my front disc brake, I lost the bolt and plate that attaches the cable to the calliper. In this Park Tool guide, they call it a 'pinch bolt' — labelled E in the image ...
3
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2answers
90 views

Why is this STI shifter cable corkscrewing?

I have a roadbike with an older Shimano 105 set of brifters. The left hand / front shifter has always had problems getting the chain to the big ring, to the point I often have to dismount to reset ...
1
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1answer
118 views

Replacing an ebike's cable disc brakes with hydraulic disc

I have a Viking Gravity 250w 24v ebike. I'm just wondering if I can replace the braking system with a hydraulic type and what would happen to the wired braking safety feature? Would I have to retrace ...
-2
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1answer
119 views

Apparently too much rear derailleur cable pull

I have a Deore XT RD-M761 GS medium cage derailleur on my touring bike that seems to move too much per shift. It shifts the chain on a 11-30 8-speed cassette with chainrings being 36/48 and the ...
-1
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1answer
84 views

What is this hardware inline with the brake cable?

The brake caliper is an Avid BB7_MTN, but there seems to be some kind of additional element inline with the brake cable. From what I can gather looking at the picture, there's an electric cable coming ...
0
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1answer
169 views

Brompton cable & housing replacement

What type of cables & housing should I buy to replace them on my 2016 M6R Brompton? I've put a lot of tough miles since I bought my Brompton, and one of my shifting cables finally frayed and fell ...
1
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1answer
103 views

Shifter won't click and cable doesn't move

My front gear is set on the smallest gear then the shifter suddenly doesn't click. I also see no cable movement from the front derailleur. Here is the link for the vid: https://imgur.com/ZncNh70
1
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1answer
76 views

What type of lever is this cable for?

I recently bought a rear brake cable for my 60s era Schwinn: I was expecting it to have a lever interface that looks like: But they are clearly different: I was browsing eBay for another cable and ...
4
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1answer
73 views

Shift Cable for 1963 Schwinn w/Sturmey Archer Shifter

This is the shifter on my 1963-64 Schwinn Racer: This is the old cable: I'd like to replace the cable and found this: It's hard to tell what the cable ends look like inside the packaging but is ...
5
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2answers
136 views

Data on cable lubricant

Chain lubrication is a popular topic. Perhaps for this reason, it is possible to find data for chain friction and chain lubrication. Some of the results of the research are quite interesting. I'm ...
3
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3answers
83 views

Shift lever tight when cable clamped in derailleur, adjustments seem futile

I have a 2020 Giant Trance 2 I purchased new at the beginning of June 2020. Recently I had to replace my shifter cable (I broke a ferrule and the cable was fraying and very short, so I figured the ...
4
votes
1answer
111 views

What is the plastic inside this barrel adjuster, and is it okay to be worn?

I'm replacing the brake cables (inner / outer) on my ~2 year old bike, and noticed that there is a piece of hard plastic tubing (2–3mm diameter) inside the metal part of the barrel adjuster that feeds ...
10
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3answers
2k views

What's the strongest way to bond a cable stop to an steel frame?

I have a steel single speed bike and want to add a rear brake. All is good expect there is no cable stops on the top tube. I want to bond two cable stops to the under side of the top tube.
4
votes
1answer
506 views

How to replace hub motor cable in e-bike?

The hub motor wires are cut from near the axle and looks like I can't repair it without completely replacing it. The motor is similar to this one on Ali Express. I failed to open the motor because ...
3
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1answer
266 views

Replace vintage barrel nipple Shimano shifter cable

My West German bike has an old friction shifter. The shifting cable snapped and I discovered the nipple is barrel shaped but horizontal, much like a MTB brake cable, but smaller. I can't figure out ...
4
votes
1answer
97 views

Post head-on crash w/ another bike, shifters no longer shift

Hi everyone on bicycles StackExchange, I had a head-on crash with a drunk guy who rode his bike into mine and since both shifters stopped shifting. the right hand shifter clicks but does absolutely ...
5
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3answers
161 views

What do you call the plastic bit that mounts brake cable housing to dedicated frame mounting spots?

I lost a couple and have no idea what to search for online.
5
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2answers
719 views

Frayed cable inside front derailleur

I noticed today that my the cable controlling my front derailleur is beginning to fray. Hoping to get this great group's thoughts on the situation. It's a Shimano 105 2x11. Bike has about 150 miles on ...
2
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1answer
171 views

Mechanical Ultegra's R8000 right-mech cable failure

On my Giant TCR Advanced SL I have mechanical ultegra R8000 groupset and every 7/8 thousands kilometers the cable constantly breaks(usually it should happens every 20 thousands kilometers). It ...
7
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1answer
211 views

Shifter cable types for Gripshift

I am changing the shifter cable on a bike with grip shift. I heard the cable casing is different than other types. Is the cable different?
4
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2answers
633 views

Mountain bike crank hits derailleur cable

Just bought my first bike and it was put together by the store. I was wondering if this little cable/wire is okay, it's hitting my pedal every time I’m riding. It doesn’t really bother me, but I don’t ...
2
votes
1answer
86 views

Are rear derailleur cable intervals equal?

On one occasion in the past I paid attention to get the rear derailleur to be "just right". On eight gears on an MTB, I would get gears 1-2-3 and 5-6-7-8 to be perfect (minus the chain rub on one end ...
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3answers
352 views

Debugging an FD problem through three visuals

The front derailleur cable is as taut as I can get it. To attach the cable with as much tension, it's first necessary to understand the inside of the barrel adjuster. And the H limit screw on a ...
1
vote
1answer
163 views

V brake tension adjusted by bending a wire

enter image description hereI have v brakes with a stiff wire which you bend to adjust the release tension, as opposed to turning a screw. I love this system, it's such an instinctive way to adjust ...
4
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4answers
425 views

Front derailleur cable hits path of pedal

The front derailleur cable is on the path of the pedal. Derailleur cable is in the path of the pedal (right of picture): The amateurish solution of pulling it back with a loop requires a solution ...
2
votes
1answer
124 views

Seating the rear derailleur cable housing

Unpacked road bike. Assembly is simple enough, except that the rear derailleur cable housing is not in its groove (I'm sure there is a specific term). Here is a picture. No matter how much I tug (...
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3answers
83 views

Brake cable rubbing seat post

I am building a tandem and I can run the rear brake and shifter cables three ways. I can run cable housing the whole way. Since it's really far, that's a lot of housing! And I don't think it would ...
2
votes
1answer
144 views

Replacing rapid-fire shifters with 105 integrated shifters

I have a Fuji Absolute 2.0LE with straight handlebars, mini-v brakes, rapid-fire shifters, 3 chainrings, 9-speed Tiagra derailleur. I found a set of drop bars with Shimano 105 integrated brakes and ...
2
votes
2answers
155 views

Road bike shipped with one of the brake cable heads disconnected from the brake lever

Is there an easy fix for this? From what I can see, looks like I have to remove the handlebar tape, and route the cable from the handle bar through the casing etc like new. I got the bike from the "...
7
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2answers
354 views

What features to look for in a replacement gear cabling?

What features are recommended for gear cabling to suit Shimano Tiagra front & rear derailleurs? I'm pretty happy with the performance of the cabling the bike came with, I haven't had any issues ...
3
votes
3answers
650 views

Front brakes need to be further apart to fit the front wheel through

My new bike has arrived boxed and partly built. The manual is generic and unclear. The front brakes need to be widened to fit the wheel, it says to 'disengage the cable guide tube from it's yoke'. Not ...
0
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1answer
62 views

Cable changing for Lapierre Audacio 400

Are there specific kinds of cables I should be going for? Specific tools that are must have to achieve this? This review shows the Audacio is a Shimano Tiagra groupset with rim brakes.
0
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3answers
1k views

My front dérailleur doesn't shift into the big ring neither in the small one. If I pull the shifter nothing happens

I have a Shimano Sora groupset and my bike is 1 year old. I already tried everything with the limit screws and the cable tension but now nothing moves when I pull the shifter. I'm not sure how to ...
5
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1answer
3k views

Pros and cons of mixed hydraulic/mechanical brakes vs pure hydraulics

Title of question is self-explanatory. Recently, it was added to the market brakes that are an hybrid mix between the mechanical Bowden steel cable and hydraulic system, which their oil tank is near ...
2
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2answers
1k views

How to replace downtube shifters with stem shifters?

My bicycle has clamped downtube shifters that I would like to replace with stem shifters. Is it as straightforward as replacing the downtube shifters with cable stops, then running cable to the stem ...
3
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3answers
3k views

What type of lubricant/grease is most suitable for brake and shift cables?

I bought this lube some time back when I cleaned the bearings in my rear wheel: Now I am replacing all the cables on my bike and the instructions say to use white lithium grease. While I was at the ...
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2answers
2k views

How to protect brake cable that runs beneath top tube while hanging bike on rack

My bike's brake cable runs underneath the top tube. This is a problem when I hang the bike on my rack as the bike compresses the cable against the rack. I came upon this question here: Bike rests on ...
6
votes
1answer
573 views

Prevent internally-routed cable housing from vibrating against frame

The rear brake cable and housing are internally routed through the top bar of the frame. It rattles around when riding on bumpy roads and sounds annoying. What's the best way to mitigate this?
12
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2answers
3k views

What is this rubber on gear cables

What is this rubber thing on my gear cable and what does it do?
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2answers
649 views

How to choose brake cables

I've decided to change a number of brake cables on my family's fleet of bikes. I'm overwhelmed by the number of possible inners and outers. What features should I prioritize? Stainless? Teflon-lined?...
2
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2answers
78 views

Rear V brake replacement

So I am replacing the rear v brakes on my old Saracen ruff trax, callipers, cables and pads. My questions is... Unless I pull the brake cable tight through the calliper the pads do not get close ...
3
votes
1answer
89 views

Problems with cheap housings

So, I converted my road bike from downtube shifters to STI brifters, and I noticed that the cable housings don't sit properly in the downtube cable stops, do you think that would be a problem ? EDIT:...
7
votes
3answers
554 views

How to retrieve broken off end of gear cable from inside Shimano 105, 11 gear, lever?

The gear cable was badly frayed in the handle system, where it bends through 90 deg. I had to cut it to remove the cable...but in doing so, the tip with the cable end (about 10mm long), has moved on ...
2
votes
2answers
67 views

Halfway through changing rear gear out cable

I stupidly started changing the outer casing on my rear gear without having cable cutter ready. Suffice to say I've messed up the cut and now I can't get the gear cable though the outer casing. My ...
1
vote
1answer
247 views

1 inch threadless headset with hollow cap for cable routing

Lets skip the questions about why I want to do this, but I would like to run my front brake cable through my headset. This is an older race frame with a 1 inch headset. Most headsets built for this ...
3
votes
2answers
656 views

What are these cable “unions” called

The Moulton bike can be taken apart for travel (just using it as an example, I don't have one). The cables that run from the handlebar to the rear triangle are not single continuous cables but are ...