Questions tagged [frames]
Bicycle frame construction, selection, maintenance, and repair.
865
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Aside from brakes, what items can be mounted to v-brake mounts?
I have a bicycle frame with mounts for both disc brakes and conventional brakes. I'm curious to know what other accessories I can attach to the conventional brake mounts if I decide to use disc brakes ...
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0
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Magnitude of load and cycles needed during testing of bike forks
I want to do a structural test on bicycle forks. Is there any specific criteria I need to follow of what should be the magnitude of the significant load and also how many cycles would need to be ...
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4
votes
1
answer
131
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Surly Straggler vs. other types of steel frames
Long story short, the frame of my current bike got busted and it is essentially a write-off now.
As I'm shopping for a new bike, the Surly Straggler came to mind again.
Here are the specs for the ...
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2
votes
1
answer
139
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MTB rear triangle specs for given frame / e-bike build
A used 27.5 19" e-bike frame (Bosch motor+battery model) (only front half) is advertised under the brand "Kilimanjaro e-tec 2.0", whatever.
Its rear triangle, however, is missing and I ...
- 21
1
vote
2
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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
703
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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 ...
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13
votes
1
answer
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Front tire and downtube are extremely close
I bought a brand new Oolter Torm S
The distance between the front wheel and the frame looks normal. However the bike that I got looks like this:
I did buy a bike that is slightly too small (...
- 1,318
9
votes
2
answers
797
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Carbon fiber frames and household heating/radiators: how close is too close?
I have a carbon fiber Giant Revolt that I keep in the hallway of my apartment, near the door. Opposite from where it's stored -- about 2.5-3 feet away, or one hallway width -- there is a hot-water ...
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4
votes
2
answers
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Recommended torque for belt port in rear triangle?
Last week while doing a bleed and rotor replacement on my Spot Acme, my bike accidentally fell from the stand with the wheels removed, causing a little damage to the pulley:
I didn't notice this ...
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-1
votes
2
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Can anyone identify this bike with its frame?
Can anyone help me identify this bike? This bike has a serial number JS10092683.
I doubt it's a Giant because I think it's just a sticker.
Click on the image for a larger version
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1
answer
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Cannot ID this bike
I cannot identify this bike. I am seeking help from the group. I got this bike in 1977 so it is at least that old. Thanks
My photos won't load, I keep getting error message when adding pics.
I have ...
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0
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1
answer
115
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0
votes
0
answers
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I want to check if my Unknown lvl 2 frame is fake
The main color of the frame is maroon, the logo is black, but, it's stickered on, and the seller said, since its a lvl 2 frame, its supposed to be stickered on.
So now I don't know if its true or not.
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1
vote
1
answer
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help me to find out what brand make this frame
i cant find what brand make this frame.. can you guys help me to find out what brand make this frame?
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5
votes
2
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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 ...
5
votes
1
answer
263
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Any good / free software to design lugs?
I'm thinking of making a lugged bike frame. Tubes will be either steel (brazed) or carbon fiber, like the old Giant Cadex bikes, where carbon fiber tubes are inserted & glued into logs.
I can weld ...
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How can I remove rust from a bicycle?
I came across an abandoned old classic bicycle. I was thinking of restoring it but the biggest obstacle is all the rust! It's super bad. Does anyone have any recommendations on what to do?
- 752
2
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Mondraker crafty Xr, can't find any details about it?
I have recently purchased a mondraker crafty Xr frame, however all the bikes with this name point to the E-bike section. I can't find the specs of the bike so I can buy the parts for it.
Where can I ...
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2
votes
2
answers
412
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Can I put a b-link on a standard mount rear derailleur to fit my direct mount frame?
I have a 2004 Trek Navigator 200 that I'm putting together. It needs a rear derailleur. My Trek frame has a direct mount hanger on it. Do I have to have a direct mount rear derailleur or can I use a ...
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2
votes
1
answer
91
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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?
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2
votes
1
answer
138
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Help me Check Cinelli Legit or Not
I am Dany from Indonesia, I want to buy a preloved Cinelli bike here, the series is Cinneli Experience 2018, but I am not sure if this bike is legit or not, because I can't find any info about this ...
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0
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1
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119
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Is this a real chopper bike [closed]
Could anyone confirm any information regarding this bike I've found please , it doesn't have the regular chopper gear placing but the body etc looks similar
3
votes
3
answers
234
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Misaligned frame — how much is too much?
I have an aluminium frame (Scott Speedster).
There's a fairly substantial difference in the amount of space between chain stay and tyre on the left and right side. This happens regardless of how true ...
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1
answer
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How bad/deep is this chip on a carbon fiber bike frame?
Does it cut into the fiber or just some paint chip?
- 239
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423
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How do vintage steel frames compare to modern ones?
I got myself a nice vintage Koga Miyata road-speed from 1978 and am planning to converting most parts of it while keeping the frameset intact.
The bike rides really nice and have no issues but it got ...
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votes
1
answer
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Is a rear wheel with a Shimano 105 hub compatible with a 8 speed cassette?
Hi Bicycles Stack Exchange!
I ride a Specialized Allez 2020 and looking to replace the rear wheel. Is a rear wheel with a Shimano 105 hub compatible with the 8 speed cassette the Allez comes with?
...
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2
votes
1
answer
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Specs to take into account when changing frame on Enduro MTB
The frame of my Enduro MTB is cracked and needs changing. The bike is 10 years old so I will look for a second hand frame and I'd like to be able to use as many of my current parts as possible.
What ...
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votes
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Geometry equivalence between Giant Contend 2 and Fuji Feather
I have been using a Giant Contend 2 for over 2 years and I am really comfortable with its geometry.
Now, I want to purchase online a Fuji Feather, with a similar fit, but I got a bit confused with ...
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3
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Were older bikes generally longer?
Tl;dr: Were bicycle frames in the mid-20th century generally longer than today?
This post asked about the length of a Soviet bike from the 1980s. The frame is longer than that of a contemporary bike ...
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30
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3
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Why Did Old Soviet City Bikes Have Longer Frames in General
Yesterday I got my hands on an old soviet city bike "Ukraine". It was produced in Kharkov velo factory, 1987. I could not help but notice that the bike frame has different geometry compared ...
- 401
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4
answers
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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?
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106
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Frame creaking even without BB and cranks
my 2011 Aluminum Specialized Stumpjumper HT Comp creaks a lot when pedaling, especially from a standing position. I tried changing the BB, greasing the cranks etc. but nothing helped. When I removed ...
- 185
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Are rattling cables unavoidable with internal routing?
Someone shows you a bike with internal routing, and you marvel at all the advantages:
you're not upsetting the tension by lifting the bike from its top or down tubes,
there are no exposed sections of ...
- 7,616
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What kind of bicycle do I have? manufacturer/model..frame?
I'm trying to figure out what kind of bicycle I have. I'm pretty new to this.
When I started taking a closer look at my bike I realized that there are two different stickers on the frame. One says ...
- 27
2
votes
2
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144
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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
0
votes
1
answer
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Which bicycle brand has the best (frame + fork) warranty?
Which bicycle brand has the best (frame + fork) warranty ?
I prefer the lifetime warranty (LFW). But a TRUE lifetime warranty (not for first owner only).
(For example TREK and Specialized has an LFW ...
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2
votes
2
answers
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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 ...
4
votes
1
answer
146
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Unknown Bike Frame
EDIT: Someone in an FB group identified the bike as "Road Athlete". Not sure if this is a brand or a model. Unfortunately, the person who id the bike doesn't have much info either. I was ...
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3
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Bianchi Bike - Help Identifying Model
I'm looking at buying a Bianchi bike, I was wondering if anyone can tell from this image the type of bike, model and year. The owner bought it 2nd hand so doesn't have much info. Any assistance would ...
- 11
9
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3
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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 ...
- 310
16
votes
3
answers
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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?
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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 ...
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2
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5
answers
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Why aren't there more bicycles and accessories designed specifically for women?
Why are there not more bicycles and accessories designed to ergonomically meet the needs of the female body? I'm not talking dresses or skirts. A range of skeletal features differentiate the female ...
- 75
3
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Can I put downhill fork on any 29" bike
My friend has an X-fact bike made for 29" wheels, so we were wondering if he could put a downhill fork on it or he would need to buy a new frame?
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can you tell me anything about this bike. frame/brakes, etc
my friend inherited this bike. curious what he has. thank you!
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I bought a Diamondback bmx at a yardsale but the decals are gone. The serial # is ACY4J14097. What year and model is this? Its an all chrome frame [closed]
Diamondback bmx serial # ACY4J14097. All chrome frame. DB stamped into back frame gussets. What year and model is this? All decals have been removed.
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Unknown bmx stamp
I was given this bike a few days ago, but I do not recognize the stamp and have had no luck searching for it on the internet. The bike has Haro bars, forks, and crank, but the frame is something else.....
4
votes
3
answers
336
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Surly Straggler fixed gear build
For now, I live in a city and I have a surly steamroller frame that is very convenient for commuting everyday life.
I will soon live in a small village from about 15km my work and I need to ride on ...
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3
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2
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666
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Should I be worried about potential chip in carbon near dropouts?
I just bought this bike second hand and I noticed this after. The chip is about 1/8 of an inch wide and about 1/32 deep. Is this a cause for concern?
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Help Identifying Bike Frame?
Trying to identify this bike frame so I can build it with compatible components, AND so I can calculate it's value. Any help massively appreciated.
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