All Questions
53
questions
2
votes
1
answer
615
views
Reynolds double butted 531C top tube rusted, worth repair or not?
Pictures show underneath of top tube. Tube made of 25.4 mm (1 in) Reynolds 531C steel. Rusted through, cleaned a little with file, and most material is still there. Is it worth repairing? Carbon fibre ...
- 23
4
votes
1
answer
87
views
Stainless steel ladies bike frame failure?
i am new to this group and this is my first post. My Japanese Miyata ladies bike had this problem for so long time. The down tube had come out for about 3mm from its connecter. It looks like there ...
3
votes
2
answers
176
views
Carbon Damage on bridge, repair possible? If so, what steps are needed?
This is a follow up question to:
Attachmentpoint rim brakes carbon bike, sratches/crack?
So. My bridge on my x lite 4 seems to be delaminating. Unfortunately Rose does not want to honor their six year ...
- 191
0
votes
2
answers
115
views
What color can I spray on top my green bike?
I want to do this without having to remove/strip having to strip paint from the frame which is already flaking off slowly.
- 121
2
votes
1
answer
104
views
Bent Reynolds 531 Simplex stays at dropouts
I have just bought a Reynolds 531 Simplex bike frame and noticed the left chainstay and right seatstay look slightly bent at the dropouts. The right dropout appears to be incompletely inserted into ...
- 21
9
votes
7
answers
2k
views
Is it possible to repair a dent on an aluminum frame using carbon fiber?
Every dent is unique so I think it is ok to ask this question once more.
I have a Stevens Superflight 2020 which has a dent on a frame:
My plan is to create some carbon fiber sleeve around the dent, ...
- 131
2
votes
2
answers
248
views
Montague FIT folding bike with “snaking” frame
My 2012 Montague FIT folding bike has started to “snake” especially when riding at speed downhill. I have tightened the frame quick release and inspected and tightened the pivot nut but the snaking ...
10
votes
7
answers
4k
views
Is it safe to ride a frame with a hairline crack in the head tube lug?
I am considering buying an Alan Super Record aluminium frame, but there is a hairline crack in the lug on the bottom of the headtube. Is this a big problem, and would it be unsafe to ride it?
Is there ...
- 573
0
votes
1
answer
303
views
2
votes
2
answers
291
views
Vertical mark on chainstay?
I bought a used 1990's steel bike the other day and have disassembled it for repainting. However I came across a small patch of missing paint on the drive-side chainstay, which had apparently been ...
- 93
5
votes
1
answer
1k
views
Dent near bottom bracket on vintage steel frame
I just bought myself an old vintage Koga Miyata and just realized today that there's a weird dent on the frame near bottom bracket.
Is this something I should be worried about? Or is it normal with ...
- 1,015
0
votes
1
answer
102
views
Name of colour of paint on Kink Volte BMX
I am looking for the color name for restoration on my kink volte?
serial # aca10e001651
Any ideas would help. I'm hitting a brick wall with google.
1
vote
1
answer
670
views
How to remove a stripped bottle cage mount?
I was taking off my bottle cage on my Specialized Secteur sport triple, and I found the mount was spinning with the bolt. (I believe it is called a rivnut but I am not 100 percent certain.)
Before I ...
- 31
4
votes
1
answer
365
views
Damaged full-suspension linkage surfaces - creaking noises
I just got a brand new, high-end aluminium full suspension bike and after the first ride the bottom frame linkage (the big one, near the cranks) started making loud noises (video link with sound).
...
- 229
4
votes
3
answers
2k
views
My chainstays have been eaten by rust, can something be done?
I hope you are all safe and sound and your Christmas time is at least decent in these pandemic times.
The other day I decided to give a good clean to my steel city bicycle and I removed the stand, ...
- 3,722
5
votes
1
answer
1k
views
Bike seat tube is messed up
I was testing my seat and as I was sitting on the bike on the highest level of the seat post.
My seat post came off and bent my seat post, so I ordered another, but now my seat tube doesn't allow my ...
- 51
1
vote
1
answer
677
views
Method to remove and prevent rust on a Reynolds 531C bike frame?
The frame of the 531C Reynolds tubing is rusting, What is the most appropriate method to remove and prevent the rust? Would it be removing the rust and repainting? If so could you like me to resources ...
- 33
3
votes
2
answers
360
views
Rockshox Pike Scratch
I have a rockshox pike with scratches on the fork stanchion. I would like to know if there was anything I can do without buying a new one. Any suggestions would be greatly appreciated!
Here is a ...
- 31
5
votes
1
answer
932
views
Hollowtech II BB alternative for stripped frame threads [duplicate]
I removed the BB (Shimano BB-93) from my Canondale Trail and found the drive side thread is stripped on BB and frame.
See and
What are the options for me to replace the BB?
Is there an alternative ...
- 179
2
votes
0
answers
25
views
Options to fix a stripped driveside BB thread- Shimano BB-93 [duplicate]
I removed the BB (Shimano BB-93) from my Canondale Trail and found the drive side thread is stripped on BB and frame.
See and
What are the options for me to replace the BB?
Is there an alternative ...
- 179
1
vote
1
answer
152
views
Bottom bracket compatibility
After two LBS's, a blowtorch and a tyre shops impact driver I finally have my bottom bracket out. It an aluminium frame if that makes a difference.
On the drive side some of the thread is gone, ...
5
votes
2
answers
6k
views
How can I repair carbon damage near my bottom bracket?
I have had a few gnarly chain-drops that ate at my Open U.P. carbon frame. I thought I just had some chips in the carbon, but today I removed my crank for a full bike clean and realized that the ...
- 183
4
votes
1
answer
815
views
Carbon frame chipped by chain - how to repair?
I found out my chain is damaging my frame near the cassette. How can I repair this?
It was damaged by my cassette in the indoor trainer which I am not using anymore.
This is how it looks:
- 41
4
votes
3
answers
3k
views
Repair frame with crack by seatpost clamp
Is it feasible to repair a crack in a frame around the seatpost clamp? Being an aluminium frame I understand soldering is problematic. It doesn't matter if seatpost is fixed in place as per a solution ...
- 43
9
votes
7
answers
8k
views
Can this crack in the steel chain-side dropout be welded?
I have a thru-crack on the driveside dropout near where it meets the chain stay.
The bike is an early 1980's steel frame Trek mountain bike.
See pics.
Bike rides fine otherwise and I have invested ...
- 139
4
votes
1
answer
3k
views
How to / is it possible to straighten a bent seatstay/chainstay on a steel frame? At home or inexpensively by a professional
I have a Genesis Croix de Fer 20 (725 Chromoly) and crashed with my friend on his bike. On one side the back of the frame bent out so the wheel drops out, it is bent but not crumpled.
I would like ...
- 41
2
votes
2
answers
917
views
Bent Peugeot Carbolite 103 Frame
I have a vintage Peugeot carbolite 103 frame which is really bent. The rear triangle is bent in the direction of the drive side to such an extent that the drive side crank arm is blocked by the frame ...
- 247
7
votes
4
answers
6k
views
Bending back a bent head tube - is it worth trying?
I have a bike that was in a major front end collision (I T-boned a car). The frame is steel and the bike bent at the head tube, the welds seem to be fine. Pictures below.
I am fully aware the ...
user21245
2
votes
2
answers
3k
views
Can this damage to my brake mounts be repaired?
So, I tried to take some brakes off of a bicycle to change my old-style callipers with V-brakes; the results were not good.
One of the "heads" or "lugs" was so caught in brake itself that I managed ...
- 1,445
4
votes
1
answer
2k
views
What to do about damaged bike frame
I recently bought a used bike from a police auction that had a nasty cut in the frame (presumably caused by a angle grinder or something similar). Should I be worried about the bike's structural ...
- 43
5
votes
3
answers
7k
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 ...
- 183
3
votes
3
answers
6k
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 ...
- 245
3
votes
2
answers
6k
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 ...
- 31
3
votes
1
answer
233
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 ...
- 246
3
votes
1
answer
457
views
Dahon Vitesse frame latch
I am repairing a Dahon Vitesse. The frame latch was incomplete. I have the new frame latch parts but cannot work out where they go, particularly the washers and small springs. Does anyone have a ...
- 31
9
votes
2
answers
3k
views
Frame with bottle cage boss ripped out - how serious is the damage?
I'm a huge fan of Greg Lemond so naturally when this frame showed up in my local Facebook page with just the frame and headset, no fork. I got very excited. The seller says that the bottle cage boss ...
- 573
1
vote
1
answer
218
views
How do I keep smallest gear on my crank shaft from contacting frame
I have an old Trek 8000 ZX that I am fixing up. I had to replace the bottom bracket and I believe I successfully did that. The bike did not have a crank set to work with so I salvaged one from a pile ...
- 155
13
votes
6
answers
9k
views
What's the strongest way to bond a cable stop to an aluminum frame?
I recently picked up another well loved GT road bike frame- it's in great shape aside from a missing downtube cable stop. The model is a ZR 4000 probably from 1999, it's 7005 heat treated aluminum. My ...
- 761
4
votes
2
answers
749
views
Seat Stay Replacement - Bridgestone MB-3
I am working to restore my first mountain bike frame, a "vintage" 1993 Bridgestone MB-3. Early on, I swedged the left seat stay so that it buckled a bit & rotated about 15 degrees inward. I have ...
- 41
5
votes
6
answers
3k
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 ...
- 761
5
votes
1
answer
2k
views
What caused this seat clamp / frame failure?
Here's my "long distance" ride, which is an old steel MTB without suspension.
I picked it up by the saddle to move it and felt some play, I thought the saddle rails might have been loose, ...
- 128k
0
votes
3
answers
2k
views
Water inside bike frame
My latest "project" involves my bike, i.e. I want to perform a complete renovation of it. This involves changing rim, complete shift group, brakes, hubs, carrier etc, just keeping frame, seat post and ...
- 147
1
vote
0
answers
2k
views
Lowrider style bent forks techniques
Would a 24 inch bent fork fit on a 20 inch frame? Is there even a 24 inch fork? Would a 26 inch fit? Also if it doesn't fit in could I just add to the 20 inch - would you be able to extend it making ...
- 19
22
votes
10
answers
57k
views
How many years an aluminium frame lasts in a touring bike?
How long does an aluminium frame lasts in a touring bike?
[Removed extra questions to be clear.]
Background
So far I preferred aluminium vs. steel for many reasons, but if steel lasts significantly ...
- 1,358
6
votes
1
answer
2k
views
Repairing Carbon / Aluminum frame
My road bike is aluminum with a carbon rear triangle. The carbon rear slides into the aluminum, and I believe was bonded with some sort of epoxy. The pieces have begun to separate after 2.5 years ...
- 263
10
votes
2
answers
2k
views
Help please to identify my Tandem
I have just purchased an old tandem, but don't know the make or year.
Can anyone help me to identify it.
The frame is steel and it has a frame number of 452599.
There are no decals fitted but I attach ...
- 101
9
votes
3
answers
5k
views
Is my derailleur hanger too bent?
I bent the (steel) derailleur hanger on my 9spd cassetted (steel) Bianchi Volpe about 1.5 yrs ago, and I just did it again, but worse. This time the derailleur got sucked into the wheel and really did ...
- 215
12
votes
2
answers
34k
views
Is it possible to repair a dent on an aluminium frame?
I have Centurion Cyclo Cross 4000 bike. Recently I got into an accident with a car door. As a result I have a significant dent on my frame(see the photos below).
I have two questions:
Is it possible ...
- 245
3
votes
2
answers
1k
views
Possible to repair a pushed in braze-on?
I have a Trek 7200 (Alpha aluminum frame) and it has two water bottle holder mountings, the top braze-on on the seat tube seems to have broken from over-tightening and has sunk into the frame. These ...
- 1,657
3
votes
3
answers
9k
views
Vibrations in frame when pedaling
Recently, when I pedal sufficiently hard, I begin to feel vibrations through the whole frame of the bike. They are not so strong as to make the bike un-ridable, but neither are they road chatter. I ...
- 1,920