Questions tagged [frames]

Bicycle frame construction, selection, maintenance, and repair.

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1answer
50 views

Warranty nukeproof mega elite 290 carbon M

Does anyone have any info on what the warranty would be for all parts on my carbon nukeproof mega have (bought from chain reaction cycles)? Thanks!
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2answers
593 views

Slightly bent seat stays. Should I worry about it?

I just realized my seat stays are slightly bent The frame is steel. Is this something I should be worried about? PS: notice how also the top of the seat stay is naturally bent. Perhaps a normal design ...
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4answers
2k views

I have a question regarding the structural integrity of my aluminum frame after its having… incurred damage;

Apologies if this has been covered previously, but I didn't see it if it had been, and at this point I'm at a loss. For context, the bike in question is this year's Haro Double Peak Sport 29 https://...
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1answer
120 views

How unsafe is it to ride a bike with this dent in aluminium top tube?

This didn't happen as part of a crash. In fact, I'm not sure what might be the reason. I just looked down and saw this while riding on a sunny day. My bike is always in my room and I live alone. I sit ...
5
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1answer
801 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 ...
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0answers
83 views

Can I use mtb rigid fork in touring frame?

I am looking to change my fork because of some issue(broken). My problem is my headtube is the standard ec34, which is why I can't use tapered fork. So, I am looking at some mtb rigid fork, which have ...
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2answers
1k views

Scratch or Crack?

I'm curious on opinions if this is a crack or a scratch. No crashes. No drops. Yes creaking.
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4answers
1k views

How to recognize a cheap from a quality steel frame

I decided to build my own bike. Went to a bike shop, took the first broken bike they had for 40 euro that I kind of liked and fixed it up to a nice (what I think) build (thanks RJ bike guy videos) (...
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1answer
62 views

What BMX frame did I find? [closed]

it has HH so I'm assuming Haro the number on the bike is as follows F2W7GO586 if you can tell me what I have and what its possibly worth
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2answers
154 views

Are worse QC'ed carbon frames chosen for pairing with lower tier components? Does it matter?

I am wondering if in carbon (or any other material, for that matter) manufacturers explicitly choose the better crafted frames to pair with higher tier components. By better crafted I mean of all ...
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3answers
43 views

What hub for cassette to mount in frame with ear fork width 12cm (currently it's single speed)

I have a single speed bike with rear fork width 12cm. Is it possible to mount there a hub with multi gear freewheel? I measured my other bike's rear fork width and it's wider - 13cm. So I expect that ...
2
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3answers
117 views

Carbon fiber aesthetics vs. poor craftsmanship vs. possible repair? [duplicate]

Today a N.O.S. 2016 Stumpjumper FSR carbon frame set arrived, and I'm not impressed with some aspects of the way the carbon fiber front triangle appears. My CF experience is limited having only owned ...
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5answers
219 views

Would It be fatally dangerous to ride with this dent [Pictures]?

Hello fellow cyclists, I have had a crash recently and there's a minor dent at the top tube. The manufacturer (Canyon) is telling me it'll take them 8 weeks to make an appointment for me to replace ...
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1answer
56 views

Best way to clean powder coat overspray

I have a BMX frame that has overspray from a powder coating job on one of the v-brake posts, impeding the rotation of the arm back to the original position. Assuming the idea would be to gently sand ...
6
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2answers
284 views

Questions about Boost frames and cranksets

I made the plunge and have purchased a new 2016 Stumpjumper FSR carbon frame. The post on eBay--from the Specialized Outlet Store, no less--was incorrect when it stated the frame had 142mm rear ...
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2answers
77 views

What model are these forks?

Recently, I picked up this set of threaded forks. I saw the chrome and it looked clean enough so took a better look and saw the make ‘campagnolo’ written on the stem. In the end I got them for the ...
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2answers
71 views

Some bluesheets for bike frame size? [closed]

I need some basic bluesheet that illustrates/show the different size/angles of a bike frame, but googling I can't find nothing else than consumer standpoints like for whom an xl bike is aimed for and ...
2
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1answer
52 views

Rattle inside frame: cause for concern?

Recently, something started rattling inside of my less than a year old hardtail mountain bike frame. I was unable to figure out what, and could not fix it. Is this cause for concern? The frame is ...
3
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2answers
112 views

Should I buy a little bit bigger bike?

I want to buy a mountain bike for the summer to ride with my friends, go on shorter rides (max 6 hours) and use in town. I am approximately 175 cm tall and 16 years old (so I might grow a bit). My ...
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0answers
30 views

I can not identify my bike and these serial numbers can you help.? [duplicate]

I can not identify my bike and these serial numbers are not pulling up anything SNACY 12H11569 can anyone help me find the name of this bike frame ?
2
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2answers
132 views

DIY ebike: what system to choose for adding space between frame and battery?

So, the project is to install this 5kg battery: on this bike: This is no joke. I'm serious. Following up to this previous question, I'm going to use steel rivnuts (aluminium is really too light for ...
2
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1answer
384 views

Blind rivet nuts for ebike battery on frame: aluminium or steel?

I'm planning my first installation of an ebike battery by drilling/riveting the frame (photo of the battery below), here are some details about the project: The battery weights about 5 kg. It's a ...
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0answers
52 views

Carbon Specialized Sirrus X5.0 Help

I am very new to this thread and seeking help from an experienced bike enthusiast. I just purchased the aforementioned bike in the title and after bringing it home for inspection(bought brand new from ...
3
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2answers
291 views

Trying to figure out what brand this frame actually is

Trying to figure out what the original brand of frame this is. The original owner said it was repainted and it doesnt seem to be an s-works frame
1
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1answer
130 views

Is this old steel frame MTB too big based on standover clearance?

Background: I'm a road bike rider but I bought a cheap but well kept old chro-moly steel frame 26er mountain bike (80s or early 90s model Miyata). I am planning on converting this to an ebike with a ...
4
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4answers
1k views

Drilling hole in aluminium frame

I want to attach a pump holder to my aluminium frame. Can I drill holes in it ? I would then use blind rivets with some glue for waterproofing to attach the holder. Is there a place on the frame where ...
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4answers
2k views

Why are bicycles so expensive?

I am looking to buy a bicycle to go from university to home everyday( about 20 KM per day), but I saw the price of bicycles are around $5000-$10000! I know I can buy many great motorcycles within this ...
0
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1answer
64 views

Confused about frame size [duplicate]

I am trying to determine the right frame size for myself before purchasing a hybrid bike. My height is 174 cm and I have an inseam size of 85 cm. If I go by the height it should be a medium frame ...
2
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1answer
77 views

How can I measure what is a relaxed geometry frame?

I would like to know If a frame would suit me for really long distance riding (100-200km). I have read about the stack to reach ratio, which for example for one of my bikes that is comfortable for me ...
1
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1answer
93 views

Unknown brazed steel frame

Hi all new here after a lot of searching, i was hoping maybe someone would be able to help me. Ive been trying to find out what frame i have. I bought a old steel frame from a car boot sale about 10 ...
2
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3answers
431 views

What are the times and costs involved in assembling a rideable bicycle from a salvaged frame?

Let's assume I bought a frame for XXX eur/usd/gbp. It usually is a steel frame from late '80s/90s, or an aluminium frame from the early '00s. The frame is of decent quality, it does not present ...
6
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2answers
2k views

Is my carbon frame done?

I have a carbon trek Emonda bicycle. Today, my rear derailleur got caught in my wheel. As a result, the rear derailleur is bent, the rear derailleur hanger snapped off, the chain got twisted and the ...
3
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1answer
396 views

Why is this rear wheel not aligned with the frame?

My LBS sold me a new wheel. I put on the new wheel. I'd go back to the LBS, but I'm afraid that I live far away from them. Alas, I'm now having this problem: As you can see, the wheel is quite not ...
2
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2answers
136 views

Using degreaser on a bike frame?

I recently did a big clean up of a bike that I bought and when I was washing the bike there were specs of dirt on the frame that I couldnt remove, I tried a soft brush, Muc off bike cleaner and (water ...
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2answers
144 views

Can someone help I don't know brand of bike mine is?

Hi I don't now what kind of bike or logo please help thank you.
0
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1answer
52 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.
3
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2answers
145 views

Please identify, Lago bike from Germany

help me to identify what kind of bicycle frame it is and its cost, if it is valuable, I will be grateful for any information. (Click images for larger view.)
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1answer
98 views

Disc brake mount/adapter bolt length

My bike's frameset has IS mounts. The mounts are 9.6mm thick. I bought a pair of IS to post mount adapters but they don't come with bolts. The adapters are 11mm thick. How long should the bolts be? ...
0
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1answer
66 views

Original fork 1'', new fork 1 1/8''

I put a picture of my original frame. The internal diameter of the straight cylinder is 31mm. In this frame was installed an original fork of diameter 1''. I would like to buy this fork : https://www....
1
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1answer
64 views

How do you tell what model of bike I have? [duplicate]

I bought this bike 2 days ago. I searched for some info, but couldn't find it. The only information I found was to be around 1972
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2answers
89 views

How to fix a kickstand that slide?

This is the kickstand of my folding bike, and since the day I bought it, the kickstand just don't stay in place. It move around the bolt a tiny little bit, and from time to time it touches the crank ...
4
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2answers
836 views

Seat tube dents from Front Derailleur band-on. Is this gonna get worse over time?

I just noticed it on the seat tube yesterday. Looks like a front derailleur clamp mark though I'm running a 1x setup (my LBS might've tried something on it before I purchased). Just worried about the ...
2
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1answer
154 views

Repair Marin Hawk Hill (cracked frame) or get new bike?

I have a 2017 or 2018 Marin Hawk Hill. It has a cracked frame (see photo). My local bike shop contacted Marin, who said they have a frame that can be used. It would also require a shock replacement. ...
3
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3answers
1k views

Fixed gear steel frame from AliExpress

I would like to build my own fixed gear bike. I want a steel frame, I know different quality of steel and I want to avoid HI-Ten. I will be mostly for urban cycling (pavements) and I would take ...
0
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1answer
96 views

How to adjust when i am 5'5 foot tall and having a 42 cm roadbike frame?

Im planning to buy a roadbike frameset in my local store but they say that the size of the frame is 42cm and i am 5'5 should i buy that frame?
1
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1answer
97 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 ...
3
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2answers
1k views

Is it ok to hang the bike by the frame, if the bowden is on the bottom?

Related: there are plenty of Q&A's (both here and on other sides), according to which, apparently, it is ok to hang a bike by its wheel. What I didn't find though is, if it is ok to hang the bike ...
2
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1answer
144 views

Dahon SUV D6 frame hinge

I have a problem with the main frame hinge of dahon SUV D6 folding bike. It is hard (stiff?) and the bike does not fold as smoothly as it should. I am trying to fix it. But i do not Know how to ...
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1answer
89 views

Gravel bike frame material: carbon, aluminum, titaniul or steel? [closed]

For a long ride on a gravel bike, what is the best frame material?
4
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1answer
107 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). ...

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