Questions tagged [repair]

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.

Filter by
Sorted by
Tagged with
2
votes
1answer
3k views

Loose crank exercise bike

I have an older Multisports EnduroCycle 550. The crank seems to be loose - the pedals wobble a bit side to side. How can I tighten that back up or do I need new parts?
5
votes
3answers
673 views

Is this old chain of a different type?

My friend's bike needs a new chain. Looking at the chain, it looks like the pins have a slot for a flat head screwdriver? Is this just cosmetic or does this type of chain require unscrewing the pins? ...
1
vote
2answers
91 views

I have a vintage Pinarello with a crooked fork

I have a vintage Pinarello road bike with a bent fork. Like if I am riding the bike and let go of the handle bars the front wheel turns to the right. Usually if you let go of the handle bars the ...
5
votes
3answers
2k views

What is the potential danger of riding bicycle with cracked chainstay and how to fix it?

I got a bicycle that has this big tear in the chainstay. Is it safe for city riding? What is the potential danger? What could someone have done to cause this kind of damage? Most importantly what ...
1
vote
1answer
642 views

Repair or Replace Shifters

Two fold question. MTB has 7 speed cog and 3 chain-rings. Shimano Deore LX rear derailleur and Acera front derailleur with rapid fire shifters. First, the right shifter will now only index four cogs. ...
1
vote
2answers
90 views

Easiest fix for this transmission problem? [duplicate]

My bike is an adult mountain bike with different gear shifts and all. Suddenly my rear tire stopped going but the chain and everything still works - the gear and chain still spins. What is the ...
4
votes
2answers
2k views

The lever came off my thru axle. Now what?

I have a bike with a 15x125mm thru axle at the front. I tried to unscrew the axle, but only the lever unscrewed (detached completely), leaving the axle in the fork. This leaves me with two questions. ...
2
votes
3answers
364 views

How to fix an old bike I found?

I'm new here and have a few questions if that's OK. I have been wanting to get a bike to ride around the beach town I'm close to so I mentioned it to my husband he asked what I wanted and I said we ...
0
votes
2answers
349 views

Bike doesn't brake immediately and comes to a squeaking stop. Do I need to get new brake pads?

I was given a bike by a friend (for free) and have taken advantage of biking over short distances to work and school. When riding I noticed that the braking is not immediate when I applied the brakes ...
3
votes
2answers
177 views

Trigger shifters partly malfunctioning

I cleaned my wife's 1999-vintage mountain bike, and because no good deed goes unpunished, I seem to have caused a problem in the process. This bike has a Shimano Deore 9-speed drivetrain with trigger ...
2
votes
1answer
93 views

Help with multiple item compatibility

I have a 2004 Jamis Dakar 3.0 My front wheel was stolen a few weeks ago and since I am not the best at bike mechanics I had a few questions. Wheel: When looking for wheel do I just need to look for ...
0
votes
2answers
740 views

Giant ATX 2 2017 axle size?

I have a Giant ATX 2 27.5 2017 and I broke my rear axle 😭. I sent it to my LBS, a week later they told me their axle fitted the front wheel but the back wheel was a different size. They haven’t got ...
5
votes
1answer
445 views

Tried to tighten the brakes, won't grip at all

I have a big problem. I know I could get this fixed with a mechanic, but really want to learn how to do it myself. I tried to fix (fool around) with my brakes a little the other day. The brakes are ...
0
votes
1answer
188 views

Restoring BSA bike - replacing rear wheel and freewheel

I'm trying to restore an old BSA bike. I want to salvage a Sebco freewheel from a very messed up wheel. I want to know what do I need to remove it. Am a newbie home mechanic so I know nothing. Since ...
0
votes
1answer
306 views

Bought used bike, Shimano derailleur does not work - how to repair or replace?

So I'm new to biking and I purchased a really good bike at a reasonable price. It's a 7 speed bike and as you can see the derailleur is messed up. I'm not sure how to find one that will work. I found ...
0
votes
1answer
148 views

How do I find a replacement Seat Post Binder screw for CAAD8

I was in my garage getting my bike ready for a ride, tightening up the seat post binder when I noticed it said 5NM on it so I decided to grab one of my cheap Harbor Freight torque wrenches from my ...
3
votes
1answer
284 views

Handlebar stolen along with gear shifter and brake triggers. What to do how much am i looking to spend?

So live in Redfern, Sydney, Australia. I keep my bike at my dad's and he asked me to lock my bike near the police station for a while because he was fixing up his apartment. This was before I left on ...
0
votes
1answer
563 views

compatible Shimano 3 speed left shifter (model: ST-EF51-AL)?

I have a Carrera Subway Limited edition 2014 with V brakes. The front gears don't shift any longer since I recently got caught in a lot of rain. I've been told by a cycle repair that I need to change ...
4
votes
2answers
131 views

Possible to identify sprocket without taking the bike apart?

I would like to change the chain and sprocket on my Centurion Basic 7 speed, as I have read that it is good practice to change the sprocket when changing the chain. It will be the first time I try ...
1
vote
1answer
627 views

Remove Maillard freewheel

I'm trying to open the freewheel from an old bike that I have, but I can't find how. I even searched for tutorials on the Internet but I can't find one that looks like mine (please see picture). And ...
7
votes
1answer
263 views

My handlebar and My front tube are no longer one. Might I have died?

So, I have this problem [problem]. This happened today while I was putting it in a car to store overnight, but clearly I have to fix this. Could someone please tell me: what exactly qent wrong ...
0
votes
1answer
2k views

How do you determine which cassette lockring tool you need?

I'm looking to order the tool to remove the cassette lockring on my bike, but I'm not sure which tool to get. Is there a way to tell just by looking at it, or do I have to look it up using the make ...
1
vote
0answers
112 views

Plastic Seat for Vintage Kids Tricycle

Anybody can tell me where to find this type of plastic seat? It sits directly on the tube, and holds on with a bolt on the middle. Thanks.
4
votes
3answers
1k views

How to disassemble this v brake arm?

I have managed to repair 10yr old diamondback hybrid as different parts fail. I even disassembled the rear wheel to replace few spokes. But I cannot figure out how to disassemble the rear v-brake arm. ...
3
votes
3answers
2k views

Stripped threading on upper rear rack bracket

One of the rear rack holes on my aluminum frame have become stripped after a year of taking the rear rack off at least once a week. I've been using this bike for commuting and weekend riding, so I ...
2
votes
1answer
209 views

Play in the suntour front suspension of my raleigh hybrid bike, what exactly is the problem? can i repair on my own?

I have a Raleigh Misceo 700c bike, and recently I can feel some play in the front suspension. At first I thought it was from the headset, so I did some adjustment by tightening the screw on the top ...
5
votes
2answers
1k views

Can this bent (after crash) rigid steel fork get repaired?

I have this EBS (unknown model please help) rigid steel frame bike. Due to a recent crash, the fork was bent backwards and a little bit to the right, at the bottom bearing in the headset: Front View:...
3
votes
3answers
509 views

The bike shop won't fix my newly bought bike

I bought a new bike, a trek MTB marlin 7, and for the first moment (a week later) it started having issues, it was clicking awfully, the pedals broke, the brakes were rubbing, the mudguard broke which ...
3
votes
2answers
2k views

Is it possible to repair a dent on frame?

Hi, I found today dent on down tube (13/14cm from head tube). I have two questions: Is it possible to repair the frame? Is it safe to ride the bike after this Main frame is aluminum. The dent is ...
7
votes
4answers
3k views

Cracked chainstay weld — now what?

Yesterday while riding my Surly Ogre around town I noticed that it was making a weird metallic popping noise on the left downstroke. When I got home to take a look I was rather surprised to find that ...
3
votes
3answers
3k views

the thread for screwing in the pedal has been stripped on right side. Any way to avoid buying a whole new crank? [duplicate]

Put a new pedal in, and followed advice not to screw it in too hard. Unfortunately, I made it too loose... and the thread on the right crank is now almost completely stripped because the pedal was ...
0
votes
1answer
730 views

Rear tire wobbling and feels “tight.” Is it likely to be axle issue or no?

I've noticed that my bike's rear tire has slowly been downgrading, and beginning to wobble more and more. I took no notice of it because it did not affect the bike riding at first, but slowly started ...
3
votes
1answer
183 views

Can this frame be saved?

I had a little accident and went over the handlebars. I'm okay, I was able to ride the bike home, but it is obviously bent. Everything else on the bike seems to be fine, the wheels are true and ...
4
votes
1answer
487 views

Sidewall repeatedly splitting in same place on rim

Good afternoon, folks. Wondering if anyone has had this or a similar issue: I blew a tire a few weeks back and replaced the tube and tire after thoroughly inspecting the rim for damage. After a few ...
7
votes
2answers
2k views

Where should the brake calipers grasp the rotor?

The brake calipers on my front disc brakes appear to be grasping a bit further in than I would expect. You can see that the calipers do not grasp the outer ~15% of the rotor. I imagine that if they ...
0
votes
1answer
151 views

Investing into a fixed bike [closed]

Well, two weeks ago I bought this fixed-gear bike and although it was my first time buying one of its kind, I considered it was cheap. Problem here is that when I tried to search for any clue of the ...
1
vote
1answer
302 views

Rear derailleur breakages [duplicate]

This is hypothetical in the spirit of a recent question about derailleur cables, but I've seen two bikes being pushed with broken rear derailleurs in the last few days. What are likely causes of ...
1
vote
2answers
94 views

Diagnosing faulty circuit in vintage incandescent headlamp

I've got a steel-framed bike with incandescent lights, probably from the '70s. Unfortunately, despite all my efforts to get it working, the headlamp refuses to work. History About six months ago, ...
1
vote
1answer
447 views

Replace / Repair Diamondback bike stem

I have a Diamondback Edgewood 26" hybrid bike. I believe it is a 2008 model. Mostly it's a great bike and it certainly serves my needs right now. However, the stem has become loose so the ...
1
vote
1answer
273 views

Derailleur tension pulley thread damaged by vibration?

I have been riding my RD-5800 this week with a slightly misaligned hanger. It had some difficult shifting, but it was ridable. So the hanger alignment tool arrived today, and I decided to clean the ...
6
votes
2answers
1k views

Gear cable head stuck in Shimano Sora lever

During the replacement of gear cable (Shimano Sora 2017 brake/gear levers), I incorrectly threaded the gear cable, gave it a little tug, and now the head of the cable is stuck in the lever housing, ...
1
vote
1answer
913 views

What to do with scratched top tube on carbon fiber frame with no structural damage?

No physical damage, if i press into it nor while riding. I did wipe the surface to get rid of dirt and paint chip. Attached also a video to demonstrate the scratch. Should i put epoxy or tape or nail ...
1
vote
2answers
2k views

Replace or repair derailleur?

Typical situation. Derailleur goes into a wheel (for whatever reason) and rear derailleur cage is bent. If you were a customer would you rather have the derailleur replaced and know it is fixed, OR ...
7
votes
1answer
863 views

Dent in bearing cone, try to get a new one, or can I keep riding like this?

So I opened my rearhub, because there was a lot of dirt in there after 4000 kilometers usage and I found that there is a little dent in the bearing cone. When I slide a bearing ball over that "dent" I ...
9
votes
3answers
622 views

Best way to repair Neoprene gloves

I have a pair of Castelli Neoprene gloves. They are just over a year old and one of them has a tear up one of the gauntlet sleeves and various smaller holes on the thumb, fingers and the palm. All ...
4
votes
1answer
157 views

Did my bike shop con me into replacing both sets of Trek 7500 Hybrid disc rotors?

.... I recently purchased a Trek 7500 hybrid via Gumtree. I was warned in advance, prior to purchasing, that both front & rear brakes were 'squealing' but concluded that this could easily be ...
15
votes
4answers
5k views

Did I pay too much for repairs on road bike? Should I have bought new?

I originally paid $250 for a Schwinn road bike on Amazon 5 years ago. It's been a really solid bike, even though I know it's just a mass produced brand. I didn't know any better and did no repairs or ...
2
votes
2answers
12k views

Remove rounded nuts/bolts from wheel on old bike

I have an old bike I need to repair (including flat tyres!) Unfortunately it has rounded nuts on it and can't seem to unscrew them. Is there an easy non expensive way to remove them without damaging ...
2
votes
3answers
453 views

Repair priorities, bike wheel or brakes

Money's been a bit tight lately for a number of reasons and I commute 2 hours a day on my bike for work. Slowly, but surely my bike has taken a toll and I REALLY need to do some light maintenance on ...
6
votes
3answers
501 views

Worried I damaged my fork fitting crown race

I'm an idiot. I've been working on building up a Surly LHT frame and was all going fine until I got to fitting the crown race. I couldn't get it to fit properly and instead of making a cup of tea and ...