Repairing your bike when something is broken. REPAIR is not the same as MAINTENANCE, a separate tag. Repair is what one does only when something is broken. Maintenance is what one does on a regular basis.

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24 gear SRAM shifters- PROBLEM

So recently i bought a carrera vengeance for £45 which is a bargain and the only problem was the gears(24 gear SRAM shifters) for the left side. When i got it i tried to shift but it just clicks and ...
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4answers
89 views

Ease of servicing brifters

How easy are "brifters" (e.g. Shimano Total Integration or Campagnolo ErgoPower) to maintain and adjust as a hobby cyclist at home?-- Although quite a lot of road bikes have them (including even light ...
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4answers
197 views

Are all vintage bikes difficult to work on?

I have had a couple of vintage bikes (from the '80s and earlier) and all have been absolute nightmares to work on: They always seem to have weird dimensions which aren't available anymore or in the ...
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2answers
49 views

Where to get replacement bolt for rod brakes

Well, I did it again: While working on a bike with rod brakes I lost the bolt which connects the two "actuating" rods to each other (I have no idea what these parts are even called; The measuring tape ...
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3answers
128 views

Hard to pedal even on flat street

I have a woman's cruiser bike with pedal brakes only. Everything has been working great but when I took a bike ride the other day I was on a flat street and it was extremely difficult to pedal...why ...
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6answers
275 views

List of tools to take apart a bike to minimise space for storage

I have a bike that I would like to take apart to store for the winter. I live in a college dorm and don't have much space. What are the basic tools that I would need to take it apart? I think taking ...
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2answers
113 views

Planet Bike speedometer won't reset

I have a planet bike speedometer and after the winter season it seems that it is no longer functioning. It will come on when the bike starts to move but I cannot reset it and it seems to be frozen on ...
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1answer
168 views

How to select cog for emergency single speed conversion with a broken derailleur

I broke the rear derailleur on my surly karate monkey recently. I had the bike setup 2x9. I decided to try and get home by converting to single speed via trail side repair (made easier by the ...
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0answers
49 views

Shimano STX rear shifter, broken spring

I have to repair a Shimano STX shifter 7 speed (from a Raleigh MT200 bike from 1995). I am almost sure it has a broken spring, similar to that pictured in ...
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2answers
13k views

Chain slipping off derailleur jockey

Last week, I had to abandon a training ride due to my chain slipping off my rear derailleur jockey wheel. This would only happen when shifting, and most often when either shifting chainrings or ...
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6answers
22k views

Removing a stuck pedal

I'm sure this question must have already been answered somewhere here, but it doesn't show up in any search results I make... I'm changing the pedals on a 40 year old bike. Pretty sure the pedals are ...
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2answers
249 views

Cannot locate mysterious crunching/grinding noise

I've seen other posts on this general subject. My BB seems tight, new chain installed by bike shop, gears all checked ... I am second owner of this Raleigh so no knowledge of past usage or ...
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2answers
122 views

Kalkhoff Agattu (e-bike) Panasonic 24v engine dead - worth repairing?

UPDATE: http://www.kalkhoff-bikes.com/en/bikes/e-bike/e-activity/agattu-impulse-8-hs-8-g-1.html I went with one of the above. It's not a 2016 model though. The Impulse 2 drive is awesome. My ...
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5answers
220 views

How long will this alum frame last?

I picked up this very cool 96-97 GT rage from Craigslist with the intention of restoration- a few rusty pinch bolts, spider eggs in the brake hoods, grinding bearings and pitted races, and all the ...
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2answers
188 views

How often do you need to bleed your Avid Elixir 1

I have a Trek bike with Avid Elixer 1 hydraulic brake. Not sure if it's a manufacture defect but I have returned to the shop 3 times since I bought the bike this April, for them to rebleed. The ...
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1answer
69 views

Rear wheel seizing

I Have a modern road bike, all has been good for 2 to 3 years. This morning my rear wheel/pedals/chain seized completely. I eventually found out the problem was the the wheel and/or axel thread and ...
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2answers
96 views

How to get this dustcap off?

I have this problem where my pedals seem to be able to be able to rotate on an axis perpendicular to the straight travel of the bike. To take off the cranks, I need to get past a dustcap. ...
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2answers
444 views

Rebound doesn't work on a Rock Shox Recon Air

On my Trek Fuel Ex6 I have a Rock Shox Recon Air fork with rebound valve. The valve has a 2,5mm allen key for adjustment, but it seems broken. The Trek Suspension Setup Guide tells me to set the ...
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11answers
16k views

Patch or replace tube?

Is it worth patching a tube on a mountain bike, or just replace it with a new one? There are a lot of 1/2" - 3/4" thorns here in Texas, and I use 26 x 1.95 tubes. Any particular patch type/brand ...
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2answers
110 views

Tire pressure decrease when the bike is idle [duplicate]

I ride a Btwin MyBike 7s. Yesterday morning I noticed (for the first time since purchase) that in my rear tire, the tire pressure has decreased to a flat. I thought it was a puncture, so I refilled ...
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1answer
94 views

Replacement of cup that holds bearings on huffy beach cruiser

I have a 1980 Huffy "Good Vibrations beach cruiser which has been in parts for a little while. I was able to find and put back together everything except I am missing one of the metal cups which are ...
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1answer
170 views

What thread is the rear wheel axle nut?

My father is trying to repair his old '65 (we think) Schwinn 3 speed. The only problem is he has not been able to get a replacement nut for the rear wheel axle. Local hardware stores have been unable ...
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7answers
39k views

When should you replace tires after getting a flat?

A nail punctured my rear wheel tire today while riding. My question is, how do you know if you need to replace a tire or simply repair it with a tube repair kit? The hole looks pretty nasty. The cap ...
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1answer
213 views

Where can I find a Shimano cs50 stopper fixing bolt?

Somehow I lost a single 'stopper fixing bolt' on my down tube cable stop. I have a set of Shimano sm-cs50 outer down tube cable stops, and I don't want to buy new ones because I only need one bolt. ...
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1answer
79 views

Frozen lockring

I have been trying to get a lock ring off of an old wheel. I have the correct cassette removal tool and (homemade) chain whip. I've gone so far as to use a vise but to no avail. I'm attempting to turn ...
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4answers
776 views

Bicycle's inner-tube got puncture right next to the valve, How to patch it there?

There is a very small cut 1-2 millimeter or less long in the inner-tube, right next to where it's the bottom of the Schrader valve. The cut is only 1-2 millimeters far away from the valve's bottom. ...
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1answer
50 views

Separating the gear hanger from the derailleur

I am trying to exchange my rear derailleur. Now I have the problem of detaching it from the hanger, as you can see in the attached image, I was able to detach the gear hanger from the frame, but I ...
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1answer
123 views

Mtb weld repair Al frame

I am looking at a full suspension MTB with an Aluminium frame. It's cheap but needs to be welded as the frame is cracked. The bike is a Cult Insomnia 52 inch. It's cracked at the lower bracket, is it ...
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2answers
52 views

How to replace derailleur cable housing?

My derailleur cable housing (sheath) has exploded: I bought a new sheath of the exact same length: PROBLEM: Now I realize that unlike brake cables that are like []------, derailleur cables seem ...
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4answers
158 views

Sound when pedalling

I have got a new mountain bike(hardtail wtih powerspline bb) and it is on 100 kms. When I push the pedals I hear little sound from the left side. It is only from the left and I think it can be the ...
3
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2answers
198 views

Should I be able to peel off a glued tire patch?

One of the things that I've noticed with the low-cost tube patch kit that I bought is that I'm able to catch an edge of the glued patch with my knife or fingernail and peel the patch off the tube like ...
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4answers
12k views

How can I tell a bike is safe after a crash?

I was recently in an accident where a car pulled out on me. I hit the car around the front wheel and me and the bike went over the bonnet and landed on the road, the other side of the car. I was ...
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1answer
71 views

Dahon Folding bike, seat came right off!

I was adjusting the seat on my Dahon Vitesse D8 when the seatpost quick release simply fell off (yellow piece in the images I supply) The piece that bends to stop the seat from moving came off ...
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7answers
22k views

How to remove a crank arm with stripped threads?

A friend called me up yesterday after a mis-adventure during his attempt at a bottom bracket overhaul. He stripped out the threads on the (left) crank arm while using a Park crank puller. In a pinch, ...
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9answers
86k views

How to get a very tight tire back on the rim?

I needed to change the tube as a consequence of a flat tire and I am in the situation that it's just impossible to put the tire back on the rim. In almost ten years of experience with road bikes and ...
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2answers
1k views

Is rubber cement in stationery stores the same as in tire patch kits?

Is the rubber cement that you can buy at the stationery shop: the same as what's in the little tubes of cement that come with your patch kit:
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3answers
3k views

Disk brake squealing after bike shop changed my pads. Is it enough reason to ask them to re-service (for free)?

I recently took my bike to the shop, since it started making a weird metal on metal (not squeal, just hard brushing sound). After checking it out they saw that the back brake pads were really (REALLY) ...
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1answer
176 views

Mystery item broken on old Dawes. Help!

I was adjusting rear brakes last night and this little thing snapped in half (see image [right]). The linear indent holds my brake cable in place and a 5mm bolt holds this in place. I guess I need to ...
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1answer
104 views

Is it usual for a freehub to have play? [duplicate]

I have a new rear wheel (Shimano Ultegra WH-6800) and the freehub has about 1mm-2mm of play in it. When the cassette is installed and the wheel is on the bike I'm getting a lot of wobble which is ...
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1answer
132 views

Fix a wobbly Shimano freehub?

I have a brand new Shimano Ultegra WH-6800 rear wheel. The freehub has about 2mm of play in it. I can feel the play without the cassette installed by grabbing the freehub body and moving it. It moves ...
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2answers
152 views

Feeling of suddenly missing chain in bike while pedalling

I can't pinpoint the problem with my bike, but the feeling is that it suddenly feels like I have no chains, and then it comes back, like it's "skipping". UPDATE: From the comments, I think the ...
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5answers
10k views

Where Can I Find an Inexpensive Bike Stand Clamp

Are there any recommendations for where I can buy an inexpensive bike stand clamp? I do not know what they are exactly called but the actual part that the bicycle is held onto in a work stand.
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10answers
9k views

Do glueless tube patches work as well as glue ones?

Quite a few years ago I tried some glueless patches for repairing my punctured tubes while out on the road, and found that they rarely stayed on for very long. I know that technology has advanced a ...
6
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1answer
101 views

Can I fix a bad tube patch?

So I did a hasty fix this morning when I had a puncture. It got me to where I needed to go, but by the evening it was flat again. I checked under water and there is that tiny little air bubbles ...
21
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27answers
25k views

What is a simple mnemonic for remembering the thread direction when removing pedals?

Given that pedal threads are different on the left and right pedals: the right side pedal has a right-hand thread (removes counterclockwise, installs clockwise); the left side pedal has a left-hand ...
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3answers
18k views

How to fix problem with mountain bike chain falling off gears?

The chain on my girlfriend's bike came off the front gear today, it looks like the back gear changing mechanism isn't handling back-pedaling properly, whenever she pedals backwards the chain slacks ...
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1answer
23 views

upgrading components on a Brava late 80 early 90

I want to switch to STI gear shifters for this 7 speed bianchi brava, that has sun tour components. I know that sun tour is not compatible with Shimano. I also would like to upgrade wheels, etc. ...
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13answers
5k views

Alternatives to buying a repair stand?

I'd like to buy a repair stand, but I can never seem to convince myself to drop the $100 minimum it seems I'd need to spend. Has anybody had any success building a stand themselves, or is it worth it ...
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3answers
7k views

How to fix a stripped pedal crank

The threads on my bike's pedal crank just became fully stripped and the pedal fell off, though the pedal itself is fine. Is there any way I can fix this without fully replacing the pedal crank?
3
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1answer
105 views

Chain slips off biggest cog under torque

I have a relatively new Bottecchia bicycle, about a year and a half year old and underwent about 8,000km. I almost always use the biggest cog on the front cassette. Lately I noticed that as I apply a ...