Questions tagged [damage]

Dents, tears, scrapes, scratches to your bike received in falls, crashes, parking failures, roof-rack collisions, etc.

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What do I do when I am unsure if damaged carbon fiber is safe to use or needs replacing or repairing?

Intended as a canonical answer to the many questions we have about damage to carbon parts. It is well known that carbon fiber parts can be damaged and fail, and carbon parts can be fragile when ...
mattnz's user avatar
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25 votes
1 answer
10k views

What is a taco?

I figure that "tacoing" is a typo but I can't work out what it should be. What is a taco, or tacoing a wheel? Originally from this question
Criggie's user avatar
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14 votes
5 answers
26k 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 ...
Greg B's user avatar
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10 votes
1 answer
356 views

Is this aluminium rim saveable?

I have an 8 inch rear wheel off an adult scooter. It appears to have suffered crush damage - at a guess someone's driven a car over the wheel while on its side. The bend is smooth and covers perhaps ...
Criggie's user avatar
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8 votes
3 answers
3k views

Broken rear brake - told it was unfixable

I have an older model Trek mountain bike. I took it to the shop for an annual tuneup and they called me to say that the rear brake broke off the frame and that it can't be fixed. The entire brake is ...
Heather's user avatar
  • 89
7 votes
1 answer
12k views

Fixing damage to brake rim surface

somehow the alloy braking surface of my rear wheel's rim has got a series of quite shallow lacerations, less than a mil' deep bunched quite closely together (the effected area is no more than 1/8 of ...
111111's user avatar
  • 313
3 votes
3 answers
4k views

Seatpost Overextension

I've been riding with my very short seat post extended well past its maximum extension line for quite a while now. Looking at the seat post itself I don't see any signs of deformation or damage other ...
Dissenter's user avatar
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8 votes
7 answers
4k views

Why is a damaged bike tyre a problem?

I have seen / heard of cases where bike tyres get damaged (like for example riding on a flat). But what I don't fully understand is why the damage becomes a problem or whether the tyre actually needs ...
KillerKode's user avatar
7 votes
5 answers
6k views

Cracked rim around the spoke

I purchased a pair of Carrera Vendetta wheels, 27.5" with 2.8" tyres. I found a couple cracks where the spoke sits around the back rim. Is it okay to ride or is it okay to weld them?
karimfoxk's user avatar
7 votes
4 answers
2k views

Dropout damage mystery, how to fix it? [Photos and videos]

This is a 90's aluminium frame with 130mm spacing between dropouts which originally had a 7 speed cassette. 2 years ago I changed the rear wheel for a standard 135mm and put a 9 speed drivetrain. I ...
tweedi's user avatar
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6 votes
2 answers
622 views

Attachmentpoint rim brakes carbon bike, sratches/crack?

I own a 2019 Rose XLITE carbon road bike with rim brakes. Today, I conducted a thorough inspection, taking things apart. At the rear of the bike, on the attachment point where the brake is fixed to ...
roverhendrix's user avatar
4 votes
4 answers
2k views

Tire blowout on long descent

I was using mild braking on a very hot day, a couple miles down the hill the back tire blew out the sidewall on a Continental Ultra Sport 700x23C inflated to around 100psi. The rim was quite hot to ...
batflaps's user avatar
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3 votes
2 answers
375 views

Brake damaged carbon frame — what to do?

I packed my Edmonda SL5 carbon frame for a road trip. In the bag, the front brake touched the frame and left a mark — definitely deeper than just the paintwork. It's unclear how deep the damage is to ...
pw_v's user avatar
  • 33
3 votes
1 answer
3k views

Replaced left crank arm but still comes loose?

A few weeks ago I bought a new (albeit cheap) self assembly bike from a local store, this bike to be exact http://tinyurl.com/gw77p9t . After about two weeks use (one and a half hours of cycling on ...
Adam's user avatar
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2 votes
1 answer
1k views

What caused play in my freehub?

I was getting my road bike out earlier and heard a clunking sound when I dropped the back wheel. I repacked the bearings in it ~200 miles ago, and the wobble felt like bearing play. However when I ...
Nic's user avatar
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2 votes
1 answer
2k views

Repairing a Crimped Titanium Frame

I have a Van Nicholas Astraeus Titanium bike, and recently had problems with removing the seatpost. The aluminium shim oxidised itself to my frame. I took it to the bike shop, and in our efforts they ...
wonea's user avatar
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2 votes
2 answers
19k views

carbon frame chipped

today while I was riding I lost control of my bike; it was nothing serious, I even fell "standing", but my bike fell on a rock and the carbon frame was chipped. Should I worry about the damage? I ...
Guido Lo Spacy's user avatar
1 vote
4 answers
2k views

How much of a bruising can a MTB take?

I recently purchased my first MTB, a Rockrider 560, and I'm curious to know how much a roughing up can it take? For example, can I ride up and off kerbs without wrecking the tires? What about bunny ...
A.Banks's user avatar
  • 13
1 vote
3 answers
715 views

Stripped threads on left crank on the first ride

I just purchased a new road bike and had a friend assist me in the assembly. There must have been a problem because it fell off after only 2 miles of riding for the very first time. I used a pedal ...
Austin Henley's user avatar