Bicycle frame construction, selection, maintenance, and repair.

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0
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1answer
104 views

Pitted rust on frame [duplicate]

Hello I have some small pitts of rust on my 1980 Raleigh royal frame. I don't want to strip the paint and sand blast it are there any non invasive treatments? Some of the chrome surfaces also appear ...
0
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2answers
286 views

Lemond Frame - what model/year?

I bought this Lemond frame online. I have an opportunity to get some components for it before I actually receive the frame. Hoping to get more info on the bike (model/year) in the hope of getting some ...
0
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4answers
136 views

Are 29“ and 26” bikes come with different size frames?

I am going to buy a cycle. In this regard I got my framesize 20". Now I would like to know is it for 26er or 29er ?? Is frame size will be different for 29er and 26er ?? I am going to buy a GT ...
3
votes
3answers
661 views

What's this part of the bike, and is it safe to alter it?

The video shows someone installing a gps bike tracker, however there is not much room in the top of the head tube, so he hammers down what's already in there in order to make room for the tracker. In ...
10
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8answers
39k views

What are the advantages and disadvantages of riding a smaller Mountain Bike frame?

I am 182cm (5' 11'') tall and am looking into buying a new frame for my mountain bike. Right now i have a 19'' frame and i found a good deal on a 17'' frame. The guy from the shop told me that it ...
0
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1answer
76 views

How to fit forks to fixie frame [closed]

I have just ordered a fixie frame with no forks. I will need to order a set of forks and cut them correctly (to the right size) so I can install my headset. Are there any tips/ tutorials on how to ...
10
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2answers
482 views

Bamboo Bike Frames

I've seen some bamboo bike frames out there in the world. I am curious as to how they ride? Is it similar to a steel, aluminum, or carbon fiber frame? Do you think it's worth the effort to build one ...
5
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2answers
184 views

How to stop the corrosion?

I have a silly question maybe.. How to protect the frame of my bike from corrosion? The bike is not new. Are there any accessories? Thanks
1
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1answer
55 views

DIY Bamboo bike? [duplicate]

I am wondering whether or not I can build my own bike. I was thinking of buying some steel lugs or maybe carbon ones or whatever off the internet, and a steerer tube too, and was hoping I could ...
1
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4answers
781 views

How to convert 17“ bike to 18” without changing the frame

I bought an Author Basic (2012) with a 17" frame. But I have some back aches after 2 or more hours of cycling (just cycling or with little jumping) and sometimes I feel a little unsure while riding (...
1
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1answer
249 views

Schwinn Vestige no longer lights up; why not?

I have the Schwinn Vestige and a very long, bumpy, dirt/gravel driveway. A few weeks ago, we rode downtown and the frame lit up amazing, as it should. On the way home, it was not lit up. Hmm. After ...
2
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4answers
4k views

How to repaint a Carbon bike frame?

I have recently purchased a Specialized Roubaix SL4 Elite Disc carbon frame bicycle - But I am not particularly happy with the colour. It is charcoal and white. I like to have a brighter colour. Is ...
1
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2answers
675 views

What is the weight difference between frame sizes?

I was wondering if any one has an idea of how much more weight a larger size bike weighs. Specifically S-works Tarmac. So for example what would the difference in weight be between a 56 compared to a ...
0
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2answers
241 views

Can anyone help me identify my bike please?

Can anyone help me identify my bike please? It has a slight story attached as it was one of the bikes in the new Lance Armstrong film. It was badged up as a Gazelle TVM (and as far as I can see, re-...
1
vote
1answer
254 views

What model and year is this bike?

What model and year is this bike? Stickers/Decals say Cannondale but not 100% sure if it is. I have looked at catalogues of cannondale from 1997 to 2010 and can't see this bike. If anyone could help ...
7
votes
4answers
658 views

To Cold Set or Not To Cold Set?

I have a Trek 620 (Reynolds 531 lugged steel frame) from the mid-80s the rear dropouts are spaced at 126 mm. I'd like to be able to run an 8- or 9-speed cassette and I was wondering about the issues ...
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2answers
315 views

Can anyone identify this frame?

I've recently picked up a 'beach cruiser' frame from a local free-add site. It was claimed to be a Huffy, however I can't seem to verify this (I've emailed Huffy and I'm awaiting their response, and ...
3
votes
1answer
140 views

Understanding the bike geometry through riding [closed]

Though this question has been asked a lot of times, and there are very good answers out there, all the answers talk about the effect of individual parameters in isolation. That is, they take trail, ...
0
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1answer
47 views

How to exchange a seat stray on a 2013 Cube AMS 150 Super HPC Race carbon bike?

The derailleur was torn apart so I ordered new seat stays and have to exchange (one of them). I'm not sure how to do it, there are some bearings fastened by screws where hex-wrenches seem to fit on ...
6
votes
4answers
166 views

Fracture in folding frame - safe to ride?

I cycle every day because I live in a city and I find it a fun, fit and convenient mode of transport. I am not a cycling hobbyist, am only averagely fit and know pretty much nothing about bike ...
5
votes
3answers
552 views

Size question. Performance v Comfort

I was checking some bikes on Decathlon (a large sports orientated chain store) and I found this size guide for some of their BTwin bikes. On their chart [pdf] that maps rider measurements to bike ...
2
votes
1answer
325 views

Can a bike frame be retrofitted with internal cable routing without Disassembly?

Would I be able to have a local framebuilder retrofit an existing steel mountain bike frame to install internally routed cable guides on the top tube without disassembling the frame? I would probably ...
5
votes
1answer
133 views

How is a frame designed for an easy step-thru?

My question is very specific towards bikes which have a curved top-tube. How is it decided that a particular height of the top tube above the ground for a set of people in a certain height range is ...
0
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2answers
512 views

How do I tell the difference between bike brands

I have a 20 inch BMX bike. It was given to me with no stickers or identifying marks on it. How do I tell the difference between brands?
3
votes
1answer
157 views

New trend of seat stay for road bike?

I have seen quiet a few road bike with a Z-shape seat stay until now, e.g. specialized Roubaix Does it serve any purpose? What's the advantage of this design in comparison to a straight-bar seat stay?...
13
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5answers
4k views

Can the top tube on a mens bike be cut off?

I want to cut the crossbar on a mens bike to make it easier to get on and off. Will it damage the bike?
5
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5answers
421 views

How to estimate price of an old CrMo frame?

So it happened. My old good CrMo friend got hit by a car and the blow was heavy enough to affect the whole frame. Now the car driver is expected to pay back the expenses but I am not sure how to ...
1
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1answer
228 views

How much is a mass production aluminium frame worth? [closed]

There are several entry level bikes under $600. I actually own one, an excellent Felt F95. I was just curious, how much is a frame of such a bicycle worth? In total, what is the cost of a frame in a ...
4
votes
1answer
188 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, but as per ...
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2answers
1k views

I am 182 cm tall. Is a road bike with a frame height 54cm good for me? [duplicate]

I have an option to buy a road bike that has the height of the frame 54 cm : https://www.willhaben.at/iad/kaufen-und-verkaufen/sport-sportgeraete/top-rennrad-ktm-strada-nur-9-3-kg-alles-shimano-...
17
votes
4answers
38k views

DIY Painting a Bike Frame: Is it possible?

I have painted a couple bike frames (think really cheap garage-find rebuilds) with varying degrees of failure. Can you help me correct/fill in the missing pieces of my frame painting process? ...
1
vote
1answer
282 views

Is it possible to buy a frameset from Trek that isn't listed separately?

I am thinking of buying a Trek CrossRip or 720 touring bike, but I want it with Ultegra Di2 and the bikes are only listed on the Trek website with lower-end components. So I'd like to buy a frameset ...
0
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1answer
82 views

How do i figure out the maker of my bike?

There are no words on it, it is a chrome frame and the only markings i found on it were a serial number that reads G1109025563. Is there any way i can get any information on it?
6
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1answer
424 views

3D printing frames?

Are there any technical limitations that make 3D printing frames impractical? And, if it is just a matter of time before our technology is able to overcome any limitations (like manufacturing ...
4
votes
4answers
499 views

What is the purpose of a serial number?

It seems like pretty much everywhere I look, serial numbers can't do the things that it seems they should be able to do. They can't help people figure out what bike they have. They can't help at all ...
1
vote
1answer
170 views

What steps to take to replace bike frame

I've always known my bike frame was too big for me. I got a great deal on the whole bike when I bought it seven years ago. It was an S-Works, probably from the '90s, with all Ultegra gear in great ...
0
votes
1answer
65 views

Spraying frame of GT Transeo

I've got a GT Transeo 1.0 bike (bought in 2011 or 2010 as best as I can remember) and I'd like to try painting the frame to get rid of some (very minor) surface rust and paint damage. I've read a ...
1
vote
0answers
146 views

anyone know what kind of frame this is? [closed]

Can anyone identify this bike frame? I'm thinking it was stolen, painted, and is being sold on a website, so I was hoping to do a search on a stolen bike database. The original color looks to be ...
4
votes
4answers
2k views

Titanium frame has a crack - advice needed

I've found a Titanium bike frame on eBay. It's very cheap and the owner says that it has a very small crack on the seat tube where it connects to a bottom bracket. See at the image below: I've ...
0
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1answer
137 views

Tapered suspension fork on a 2003 Surly Karate Monkey frame

Is there any way I can run a modern tapered 1 1/2" to 1 1/8" tapered suspension fork on a 2003 Surly Karate Monkey (Original frame style with V-brake and Disc Brake Mounts). I think it only works with ...
1
vote
3answers
96 views

Safe to shorten a dual-pivot caliper mounting nut?

I have a 2006 Specialized Langster. Unfortunately the brake bridge is not deep enough to insert the shortest caliper mounting nut I could find (10mm). The head of the nut should insert all of the way ...
3
votes
1answer
358 views

What is the cost saving from manufacturing bikes in China vs USA or Taiwan?

I went to a bike shop recently and was surprised to see big "Made in China" stamps on the Trek mountain bikes. I did some research and apparently all the big bike makers manufacture in China now. I ...
1
vote
1answer
478 views

How to repair a broken steel frame, at the rear drop out /chainstay location

I have a Raleigh technium , recently broke at the rear dropout. Angelo had a post w a picture of a broken rear dropout and commented, that this failure on a steel frame was totally repairable, btw......
1
vote
1answer
67 views

Have some new parts on hand but need new frame - frame swap reasonable? or sell and purchase new bike?

Purchased my first "decent" bike, a Motobecane 700HT about 5-6 years ago as a 'gateway drug' of sorts for myself to get into XC biking. Ended up using it for commuting for a few years as well. Over ...
4
votes
3answers
2k views

Convert old road bike to comfortable commuter

I have an rather old road bike, that I'd like to convert to a comfortable commuting bike. The bike should be used for everyday commuting (< 5km) and occasionally day tours. I'd like to keep the old ...
0
votes
2answers
138 views

What accommodations might be made for riding a frame 4'' too large?

I have been offered possession of a very old and interesting bicycle, made in 1933. It appears to be in quite good condition, and has a lot of interesting history. However, it features a 26'' frame, ...
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4answers
2k views

Disadvantages of Riding Larger Frame Sized Bike than Reccomended Frame Sized Bike

I unconsciously bought a bike which's frame size is larger than recommended. (My height is 163cm bikes frame size is for people 174-190cm) (I dont have any problems with reaching ground with my feet ...
3
votes
1answer
280 views

Bicycle Frame: anodized Aluminium?

I need help with identify what materials is this frame I need to know if this is indeed aluminium? (weight 1.2 kg for 15 inch frame hybrid, is not ferromagnetic). If it is, why would it have a ...
0
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2answers
240 views

unknown make model and year

enter image description here! Can someone please help me identify this frame? I have tried searching the net for same lugs design but I can not find anything that is similar to the lugs of this frame....
3
votes
1answer
369 views

What are these holes in my frame for?

I have two threaded holes on the inside of my frame on my 2007 Stumpjumper FSR and I don't know what they are for. Can anyone tell me why they're there?