Questions tagged [damage]
Dents, tears, scrapes, scratches to your bike received in falls, crashes, parking failures, roof-rack collisions, etc.
188
questions
3
votes
1
answer
60
views
Tire keeps dislodging from rim
I recently bought a bike, and the rear tire keeps dislodging from the rim. Near where the tire separates, I found a small divet in the rim. When I run my finger on the inside of the rim, I can feel a ...
4
votes
2
answers
1k
views
Is this carbon fork damaged?
How can I know if this carbon fork is damaged ?
The seller of the bike tells me that he didn't fall, but I can't know for sure.
How can these scratch happen otherwise ?
Also there are some on the seat ...
- 71
3
votes
1
answer
147
views
how to proceed with bike damaged by airline in cardboard bike box
Upon receiving my bike from United Airlines, the front of my bike box was ripped off and the box itself was twisted, so it appears it was placed under an extremely high load.
Upon building my bike ...
- 629
2
votes
1
answer
66
views
Replace lever for hydraulic brakes
I was moving my mountain bike in a moving van, and the the brake lever was damaged in transit.
The brake is a tektro hydraulic, and it is the Front brake.
The connector to fluid tube is gone but no ...
2
votes
1
answer
95
views
Is it safe to move a di2 derailleur manually?
From my understanding, doing this will damage both the front and the rear derailleurs' servos and / or gears:
https://youtube.com/clip/UgkxQsBoKA0qG0Mfgwo435Xr6aLnD8TOTrRB
However, this is fine since ...
- 319
10
votes
5
answers
2k
views
New carbon road bike - scratches discovered on chain stay
New carbon road bike (~1 month), rode less than 200 miles. When cleaning the bike, I discovered several scratches on the chain stay, near the cassette. Could this be due to a manufacturing defect, a ...
- 109
3
votes
1
answer
347
views
How far a damaged rim can be taken safely
While riding last week, I was going over an obstacle at speed and I did not manage to lift my back wheel, therefore think I damaged the rear rim.
Since the damaged is looking minor, how far is it safe ...
- 133
5
votes
2
answers
1k
views
Wheel scratched carbon on ride
Wheel scratched carbon seat tube
Hi everyone,
Recently my wheel scratched my carbon seat tube as it loosened at the end of my ride. Was wondering if it is safe to ride.
Imgur has 4 images, 2 are below ...
- 51
3
votes
1
answer
391
views
I suspect that my carbon fork has a crack but I can't really tell
I've relocated to a new town so I'm still looking around for good bike shops. For the time being as I was re-assembling my stem, i noticed a small notch of about 0.5mms on the front of my fork (the ...
- 153
1
vote
0
answers
100
views
Specialized Sirrus bicycle, fork cracked [closed]
I have a Specialized that was a gift, but have some problems at the front fork.
The fork is cracked, as per Photo:
Can someone help me to discover how to repair?
Other photos of the bike:
3
votes
1
answer
280
views
Super-glue for minor scrapes on carbon fiber frame - below the top-coat
I scraped my frame on a curb about 1 mm deep in a couple places near the rear axle. (it's a 2021 TREK Domane SL-7). Another post stated that chopper pilots routinely use super glue and baking soda ...
- 597
0
votes
1
answer
121
views
Paint chip or carbon crack [duplicate]
Looking at this bike to buy but I’m 3 hours away from where it is.
Not sure if it’s a paint chip or a carbon crack, I asked how it happened and he said he was carrying it upstairs with his bike pump ...
- 1
4
votes
2
answers
1k
views
How bad is topping out a suspension fork?
I recently got a relatively cheap department store bike to bring to college, since it will see a lot of wear and will be kept in the elements. However, whenever I lift the front wheel (as in to get on ...
- 141
3
votes
1
answer
766
views
Wear marks on seat stay from fender/mudguard. Problem?
Mudguards have worn away where they contact the seat stay on carbon frame. A little deep, wondering if cosmetic or more serious. The one on the right stay doesn't look as deep but you can see 3 ...
- 31
2
votes
2
answers
461
views
Are these scratches in my aluminum frame structural or purely cosmetic?
My aluminum bike (Cannondale Adventure 1) was scratched on the welds connecting the seat tube and seat stays, and I was wondering if the damage is purely cosmetic, or if there is any structural damage....
- 167
6
votes
2
answers
1k
views
Small dents on bicycle frame
Two weeks ago I bought Trek Checkpoint ALR5. Bike rides pretty well. It has aluminium frame. I bought it primarily for bike packing trips as it has ton of mounting points.
After riding it for 2 weeks ...
6
votes
2
answers
707
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 ...
- 191
5
votes
1
answer
2k
views
Started to drill into alu frame - how bad is it?
While attaching an equipment on my bike, I accidentally started to screw into the bike frame.
I only realized a few weeks later when I dismounted that said equipment.
I'm pretty sure I used a ratchet ...
- 51
2
votes
2
answers
628
views
Is there an issue with this seatstay? photo
is this seat stay normal or is there a dent / damage here?
Hard to tell it's near the welding but the other side does not have this.
From https://imgur.com/a/xUtmeKN
- 587
3
votes
2
answers
944
views
Carbon chainstay damage assessment
Is it likely that the carbon is fractured based on my pictures, making it unsafe to ride?
I discovered an odd, oval-shaped scratch on my chainstay. I remember my bike being knocked over on the asphalt ...
- 31
7
votes
1
answer
730
views
Tightening a compression plug - manufacturer says 9-12 Nm, seems too tight at 6 already
First time working with carbon. Bought a longer compression plug, because it came with a very small one, not even covering the whole height of the stem.
I tightened it to 7 Nm. Took a while… Made ...
- 121
2
votes
2
answers
1k
views
Aluminium fork dropouts hit floor - need to worry?
I had my bike in a bike stand without wheels, clamped by the seat tube. As I loosened the stand mount lock the bike slipped out of my hand and suddenly rotated forwards as most of the weight was in ...
- 563
5
votes
3
answers
741
views
How should I deal with this splintered carbon steerer?
I made a bit of a mess of my fork's carbon steerer while cutting it:
I deliberately cut the steerer around 10 mm longer than I needed it. While cutting, the steerer was secured in a stem up to this ...
- 4,043
7
votes
3
answers
4k
views
For a broken chain on a child's small bike, do I replace the whole thing or just a single link?
I have a toddler bike that has lost one of the side plates to a chain link.
Should I replace the whole chain or can I just get a new side plate for the missing link?
If I should replace, the whole ...
- 173
4
votes
1
answer
780
views
Is it possible to damage the crankset while removing the pedals?
I got a brand new bike and I wanted to replace the pedals with the ones from my old bicycle. However, while removing the pedals from the new bike, I forgot that one of the threads was reversed and ...
- 209
5
votes
1
answer
631
views
Nut dents on stamped dropout
Problem with stamped dropouts on singlespeed. There were dents from the nuts. It became inconvenient to operate the bike (the wheel is poorly fixed and constantly moves out). It is impossible to ...
- 153
9
votes
7
answers
2k
views
Spokes damaged by chain – should they be replaced?
When servicing my rear hub I discovered that the drive-side spokes have been damaged by the chain. The spokes are rough to the touch (one even had a sharp edge that caught my nitrile glove) and some ...
- 4,043
2
votes
0
answers
65
views
Should the seatpost clamp be installed backward for a carbon seatpost in an aluminum frame? [duplicate]
Is it true that the seatpost clamp must be installed backward (i.e. its slot facing the handlebars) or at least with a slight offset to avoid aligning its slot with the aluminum seat tube slot when ...
- 4,169
2
votes
1
answer
171
views
Bicycle fork fatigue test duration
For a bending fatigue test for a bicycle fork, according to ISO 4210-1, The number of cycles should be 120,000 for stage one of the bending fatigue test and 100,000 cycles for stage 2 of the test.
How ...
- 23
1
vote
2
answers
454
views
How bad is my frame damage?
Recently my rear wheel locked up while going downhill, the lockup caused the damage in the foto(scoring in the aluminum frame by the axle) is it bad?
The bearing is of course destroyed.
Yes, it is ...
- 11
3
votes
2
answers
1k
views
Worried about chip in carbon road bike frame
I am planning to get a second hand medium range road bike and this is the first full carbon road bike I'm getting. However, upon checking the bike, I can see there is a surface chipping on the top ...
- 133
4
votes
1
answer
228
views
Can I continue use abraded rim?
Today my tire blew up and I had to brake by bare rim and, as a result, the rim abraded in one place from 3mm to 2mm.
Can I continue to use this rim or I need to repair it in the shop or order a new ...
- 75
1
vote
1
answer
579
views
Scratched hydraulic brake hose during install - should I be concerned?
today I was installing brand new GRX brakes into new frame. It was not my first time, I've already build 10+ bikes, I messed up through. I inserted rear brake hose without any issues, I had my guide, ...
- 31
7
votes
1
answer
443
views
How to check bike damage after impact
I got involved in a frontal crash with another cyclist: they turned back to greet a friend and while doing so they invaded the opposite lane of the cycling path, where I was transiting. ...
- 7,311
5
votes
2
answers
2k
views
How bad is this dent?
I have found this used Specialized Diverge(aluminium frame) and am wondering how bad this scratch/dent on the side of the top-tube close to the seatpost is. I have looked at other posts and I don't ...
2
votes
2
answers
195
views
Can the e bicycle motor be damaged on full throttle with wheel locked
I have a hub motor 250w e bicycle with a 7.8 mah 36v battery (https://felidaeelectric.com/maven-e-bike-n/). This ecycle has both pedal-assist and a throttle.
Using it for school commute and will be ...
2
votes
1
answer
236
views
Chip in carbon seat tube?
I pulled out the seatpost on my Giant TCR and notice something like a chip in the seat tube, are defects like this normal?
- 21
9
votes
2
answers
3k
views
I have a bent aluminum rim on my Merida MTB. Is it damaged beyond repair?
Consider:
I was riding my local trails today, got a flat tire (due to not riding tubeless) and before I realized it, I hit a jump with too little air in the tire and I bent my rear rim.
Is it is ...
1
vote
1
answer
260
views
Lots of cracks - safe to ride?
I probably shouldn't have, but I just bought this 2016 CAAD 8 second hand for cheap. I'm trying to work out if it's safe to ride.
There are cracks all over the carbon fork (and in the rest of the ...
- 13
1
vote
1
answer
93
views
Multiple gears shifted while not pedaling
It happened again, but much worse this time. Someone shifted the front derailleur from 2 to 1 and the rear derailleur from 5 to 9 without pedaling when I was in school. Does this do any significant ...
- 165
3
votes
1
answer
279
views
How bad/deep is this chip on a carbon fiber bike frame?
Does it cut into the fiber or just some paint chip?
- 249
6
votes
4
answers
1k
views
What does it feel like to ride a mtb that has a bent frame
What are the signs and symptoms of a bent mtb frame? Or bent forks? What does it feel like when riding it?
- 1,379
4
votes
1
answer
284
views
Can shifting front derailleur while not peddling cause damage
I was in school when someone shifted the front derailleur from 2 to 1 without peddling, the problem is I am not sure how long ago it was shifted, at max it could have been 6 hours, does this do any ...
- 165
2
votes
2
answers
261
views
Welding a centre kickstand plate to 4130 steel frame?
Hopefully a simple question (?!). I'm wondering if you could help me with a simple answer.
I have a 30 year old UNIVEGA tandem frame that my family and I love to ride. The problem is, with a baby-seat ...
- 21
4
votes
1
answer
1k
views
Is this crack in a used bike's head tube safe enough to purchase the bike?
I am buying a second-hand road bike. This is one of the candidates. It looks like a nice bike, except for this crack on the head tube.
I have read that bikes with cracks on their frame should not be ...
9
votes
3
answers
3k
views
Did my frame just break?
Bike: Raymon HardRay E-Nine 6.0
I just finished adjusting the gear shifting for my first time.
As I went for a test drive the chain immediately slipped down.
Then I saw this.
First I thought the ...
- 396
16
votes
3
answers
4k
views
Is it safe to ride an aluminium bike with a big top tube dent?
Someone tried to steal this bike - they damaged the top tube. The frame is designed with a wide flat top tube. Is this still safe to use?
- 161
4
votes
4
answers
2k
views
Carbon damage assessment
Is it safe to ride? Will jb weld fill do the trick?
Seems like this damage was caused by a to wide tire rubbing the frame. I don’t see any fibers exposed to be honest(but I might not know what I’m ...
- 71
4
votes
1
answer
558
views
Is this a crack? Came off my Carbon frame for the first time
A guy on his phone just walked out in front of me into the bike lane and I plowed him at about 30kms. I walked away without a scratch and he absorbed most of the impact but my bike did hit the ground.
...
11
votes
3
answers
2k
views
Bubbles in carcass/ casing of Schwalbe Pro One TLE
I noticed two small bubbles on the carcass of my rear tire.
I am running the 32mm Schwalbe Pro One tubeless at around 4bar /60psi and it wasn't particulary hot when the bubbles appeared (~20°C). The ...
- 111