Bicycle frame construction, selection, maintenance, and repair.

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2
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1answer
359 views

Do kickstands damage the frame by being used?

I was told once that kickstands warp the frame when used, especially when the bike is laden down, and that some materials are more susceptible to this than others. Is there any truth to it?
9
votes
4answers
2k views

Why would a bike feature a “carbon wrapped aluminum frame”?

I saw a link to what appeared to be a Carbon bike on amazon. The price was extremely lower than any carbon bike I had ever seen. After reading a bit, it seems that the bike frame is really made of ...
14
votes
2answers
1k views

Bamboo bikes - the verdict?

I'm curiously interested in buying a bamboo bike for use as a Sunday road bike, and I'm just wondering whether they're suitable: Strength at high speed? I live near Parbold, which has nice hill ...
8
votes
1answer
355 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 ...
2
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3answers
4k views

What are some other places to buy MTB frames online?

I am looking for sites that sell bike frames online. i find many sites list all things (forks) but stop short with frames. The best places I have found are: http://www.chainreactioncycles.com/ and ...
7
votes
3answers
1k views

Should I Get the Paint Job Touched Up

My wife's bike recently got scraped up and the paint got scratched down to the frame. It's an alloy frame. Should she be concerned about rust or any kind of damage? If so, do we need to get it ...
9
votes
3answers
1k views

What are the advantages of investment casting?

I'm starting to see more and more frames using investment casting for head tubes, drop outs, seat tubes, etc. Such as the new WTP c.r.e.a.m. frame . It looks nice, but I'm suspect on how much more ...
4
votes
2answers
43k views

Frame sizing: “medium” vs. inches vs. centimeters

How in the world does 17-18 inches match up to 53-54 cm?? I was looking up bicycle sizing charts and found the ones on the Evans website interesting, if somewhat confusing. For example, see the ...
2
votes
2answers
486 views

How do I know if the tandem bicycle I've inherited is worth repairing? It has a serial # 459310 on it, no other identifiers

I've inherited a vintage tandem. It looks as if it has been spray painted, and has no identifiers, etc remaining on the frame. The serial # on the bottom reads -459310. Any ideas on a make or model, ...
13
votes
5answers
876 views

Why is it common for cheap bikes to have the frame sawn in half below the saddle?

These days cheap bikes often seem to come with the frame sawn in half below the saddle. What does the manufacturer gain from this design, and why is it associated mostly with cheap, low quality ...
2
votes
3answers
5k views

What belt-drive compatible frame and belt-drive kit would you recommend?

I would like to build a custom belt-drive bike for my daily commute. I am looking for a frame and a belt-drive kit for a total budget of about 500$. I ride all year long, and winters here (Montreal, ...
4
votes
1answer
363 views

What tools are required to begin building a frame?

What tools are required to begin building a frame? Are there DIY substitutes for any of them? Are there things that aren't requirements, but simplify the process enough to be worth the cost? Aside ...
1
vote
2answers
1k views

Does anyone have experience with Bottom Bracket Tap/Facing sets?

I'm interested in recommending my boss get the workshop in which I work a bottom bracket tap and facing set. As it's quite an investment it's important to me to know what you're getting for your ...
2
votes
2answers
94 views

Putting brakes from a fat frame onto a skinny frame

I took a bunch of parts off of a bike with a hybrid titanium/carbon frame (it died), and am using them to build up a bike from a sweet steel frame I got on ebay for a song. It's my first time building ...
4
votes
2answers
889 views

Is torque relevant for steel/aluminium? Where do I find torque specs?

When you are not dealing with carbon, is torque relevant? I've never seen it mentioned on the hundreds of answers here, or the hundreds of how-tos I've read elsewhere. Should I just tighten ...
1
vote
3answers
2k views

Is this aluminum “rust” in my frame?

I found an aluminum bike in the trash and it seems like it has been exposed to the rain, especially because some of the metal is slightly rusty. The frame is a different thing, because altough it is ...
5
votes
3answers
3k views

Metal seat post with carbon fiber frame?

Is using a metal seat post on a carbon fiber frame advisable or not? I want to use a seat post mounted rack on my road bike (no regular rack mount points are on this bike), but I have been told that ...
5
votes
4answers
1k views

Why aren't sportive' 'bikes popular outside the UK?

I recently bought a 'sportive' bike, i.e. very much like a road bike but with a taller head tube to give a slightly more upright, more relaxed, less 'heads-down' riding position, and a triple chainset ...
4
votes
2answers
3k views

What benefits does a tapered head tube afford?

I've just read a review of Tom Zirbel's Jamis Xenith SL on Bike Radar and flicking through the pictures there is one of the head tube with the following caption: Tom Zirbel's (Jamis Sutter Home) ...
5
votes
1answer
824 views

Experience with welding Titanium frame?

My Litespeed Tachyon, a 1996 model, of which I am the second owner, (So Litespeed will not honour the warranty) has now developed its 3rd crack. First was in the seat tube above the deraullier and I ...
3
votes
1answer
1k views

How do I fix a dent on my frame?

I suspect that something has pierced my frame. At any rate, I have a dent in my bike frame. I would like to avoid the possibility of corrosion, with minimium cosmetic trade off. So, how do I go about ...
1
vote
2answers
562 views

Maintenance on an Aluminium frame

I have an aluminium frame. The top tube has become slightly scratched or pitted (by something hard, presumably, I don't know what; maybe while it was parked). Does it need maintenance (e.g. does the ...
8
votes
1answer
432 views

What's the definition of a Mixte?

What makes a mixte frame? Further, what's the etymology of 'mixte'?
13
votes
3answers
5k views

Repairing a bent bike frame, is it worth it?

I have a bike with an incredibly bent frame. The bike itself I have tried to replace with other inexpensive bixes, but this one just had a certain geometry that I keep wanting to resurrect it. It is ...
3
votes
1answer
205 views

How to find a frame given a geometry

In 2007, I bought my first bike: a Bianchi Boardwalk 2006. It was a great bike, but I didn't treat it well and it now needs about $300 worth of work. I've been thinking that maybe I'd like to take ...
13
votes
6answers
2k views

I keep breaking my road frames - why?

I've gone through four frames in the last decade or so, all from different manufacturers, all steel but both lugged and welded. Every one of them has eventually developed a crack, been repaired and ...
4
votes
1answer
442 views

Cyclocross bike frame considerations

I'm considering putting together a cyclocross type bike together for fun and variety. Is a typical road frame suitable for this? And, what do I need to consider in terms of sizing? On sizing, it ...
6
votes
2answers
611 views

Switching Parts to a New Frame

What things do I have to consider when planning to switch parts from one frame (old one) to another frame (new one)? Will all the parts transfer? What items may need replacement because they won't ...
7
votes
2answers
882 views

What should I consider when choosing a bike frame?

In thinking about building a road bike from scratch, what should I consider when choosing a frame? I'll be building from all new components and plan on just doing day rides of a few hours a piece, ...
17
votes
1answer
8k views

Road bike carbon fiber frame life span

I have read in several places that the carbon fiber has a shorter life span than the aluminium, and i was wondering just what would it be. I am not referring to accident related failures of the ...
8
votes
3answers
426 views

non-steel frames and longevity

Until recently, I had a late 80's Schwinn aluminum frame bike (now a thief has a 80's Schwinn aluminum frame bike, but that's another story). I had heard a number of horror stories about early ...
12
votes
2answers
2k views

Dealing with rust on a steel frame

I have a small spot of rust on the bottom side of my steel frame's top tube (Columbus Niobium tubing). It's from abrasion during transport that I didn't notice until it was too late. The spot is ...
12
votes
2answers
693 views

How to prepare a frame for a new paintjob

I want to have my bike frame repainted. What should I do before I give it to the paint shop? How would they like to have it prepared?