Bicycle frame construction, selection, maintenance, and repair.

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4
votes
2answers
314 views

Does frame size inside a particular model affect the ride characteristics of the bike?

I read an article stating that the smallest of a particular model of bicycle doesn't fully reflect the original design concept of the model when I was about to buy the smallest (430mm seat tube) of ...
1
vote
1answer
240 views

Derailleur Hanger replacement for GTS R5 road bike frame

I'm looking for an online site where I can buy a derailleur hanger replacement for my GTS R5 road frame. The frame is the one in the picture ...
1
vote
1answer
1k views

Rear tire has started rubbing frame at one spot

Riding my bike within my suburban residential neighborhood, I felt a shock, like a snap although I don't think anything snapped, followed by a rubbing noise every few seconds. Pedaling and the brakes ...
2
votes
1answer
89 views

Could paint build up on a bottom bracket be considered a warranty issue?

On Saturday I received the new frame for a steel xc bike I'm building up. I went to start on the weekend but noticed a large paint build up on the bottom bracket. The build up is about 15x3mm (don't ...
0
votes
0answers
46 views

Is it cost effective to purchase a frame and components separately? [duplicate]

I was looking to buy a new MTB and was wondering if a purchase of a frame and components separately was cheaper then buying a bike with everything? I would assembling everything myself instead of a ...
-3
votes
1answer
396 views
17
votes
3answers
24k 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? ...
3
votes
4answers
361 views

Is a custom road frame worthwhile?

I've been riding a Marin San Anselmo hybrid for some 13 years and I'd guess I've done over 7000 miles on it almost exclusively on the road (and it's not my commuting bike). I'm gradually doing more ...
-3
votes
1answer
230 views

Size medium or large [closed]

I am buying a cube hanzz pro freeride but I cant decide on the size. The dealer has only Medium size so I cant ride the large one. I am 182 cm tall 76kg and have step length of 89cm. What shall I do?
4
votes
3answers
686 views

Cable routing and why is there no optimum solution

This is a general question, regarding the routing of the cables of both brakes and derailleurs on a frame. I find it highly practical to mount all cables along the bottom of the top tube. This ...
3
votes
2answers
268 views

Trying to build a bike, confused about fork/headsets/compatability

I have a fork with a 1" steerer tube, and a frame with a 1.5" head tube. The steerer tube is slightly short, and when inserted into the frame, is flush with the top of the head tube. The fork is ...
3
votes
7answers
13k views

How can you remove logos from a bike frame?

I'm trying to remove all these annoying labels from my bike. On the main frame there is one big logo, but I'm not sure if it's a sticker or not. The frame is black, but it's very cheaply made, and the ...
1
vote
3answers
1k views

Is it safe to ride with bent fork?

My bicycle went from this when I bought it: To this when I crashed (note the front fork bent where it attaches to the stem; front wheel almost touches the down tube): Update: Just looked at the ...
1
vote
1answer
203 views

How can I use a small Shimano BB on any frame?

I have a Shimano BB-ES25 bottom bracket and 45T crankset that was removed from a Giant-CRX City with an eccentric hub (it had Shimano Alfine internal hub gears). They have literally never been used, ...
1
vote
1answer
180 views

How bad is this damaged lug

I have noticed a little crack in one of the lugs of my gazelle steel frame. I hav not ridden it since, because I am worried it will break. Here are some pictures. The lug in question is the one ...
20
votes
4answers
10k views

How can you recognise a quality steel frame?

I'm looking to buy/build a road bike and I would like it to: last 100 years have a low environmental cost As I'm not interested in shedding grams (a diet would be more helpful for me), I'm leaning ...
2
votes
2answers
2k views

Am I better off buying a new bike, or upgrading my old bike?

Half a year ago I started to use again my old Schwinn Woodlands MTB for commuting. I didn't want to spend a fortune on a new bike, I wasn't certain that I would like to bike commute daily. Bike has ...
0
votes
2answers
743 views

Where can I go to change the vertical drop out for a horizontal drop out?

I have an aluminum road bike frame that I want to use to build a fixed gear. My problem with this frame is that it has vertical drop out and no derailleur hanger. Fr
1
vote
1answer
2k views

What difference does bike size make?

I am 6.2 feet tall, and I have a mountain bike that is 17 inches long. I know it looks bit small for me, but will I hurt myself by riding this bicycle? What should be the preferred bicycle length for ...
5
votes
1answer
1k views

How feasible is it to transfer modern (2010) components to a 90s frame (road bike)

My 2010 aluminum frame may be toast (stripped bottom bracket) and I was considering getting an older chro-mo frame and transferring the components to it. It's a racing/sport style with drop bars and ...
1
vote
1answer
324 views

Purpose of partially filled in rear drop out

I have an old MTB frame that has the drive side rear dropout partially filled in as if it was part of the original forging of the dropout. And, I have seen this on a few other frames -- even ...
6
votes
2answers
3k views

MIG Welds vs Brazing for simple bike hacks

Given that frames are generally brazed, not welded and given that MIG welding will work on simple bike hacks what are the downsides of MIG welding these hacks? For example, I would like to make a ...
4
votes
2answers
605 views

Why are bike frames getting so much bigger

This is just a general interest kind of question, but I've really been wondering about this lately. We've had a lot of advancements in bikes over the years, and people are always trying to make them ...
6
votes
2answers
791 views

How to choose between a race bike like a Madone and a classics bike like a Domane

I ride regularly for exercise in New York City but do not race. I currently ride on a steel frame that handles the rough roads easily. I want to buy a carbon bike and am torn between a "classics" bike ...
6
votes
5answers
5k views

Which type of frame is better for a touring bike, steel or aluminium?

I hear that a steel frame is more comfortable to ride for a long tour but that it is heavier and easier to rust than aluminum. Which material is better for a touring frame?
0
votes
1answer
1k views

How to avoid or reduce back-pain by adjusting the handlebar and seat of 19.5" MTB?

I'm 6' 3" long, having 45 inches of waist-Toe length. I bought Trek 3500, 19.5" sized frame bicycle two months ago. I've been experimenting with the handlebar and seat positions(Forward n Backward) to ...
10
votes
2answers
4k 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 ...
1
vote
1answer
361 views

34.9mm front derailleur on steel frame?

Can I fit a 34.9mm front Shimano derailleur on my steel frame? I understand that steel frames are narrower. However, is there some sort of adapter that I can use, or can I even wrap the frame around ...
5
votes
6answers
5k views

Fixie/Single speed frame information for beginner

I don't want to buy a ready made bike because singlespeed or fixed gear bikes are way expensive due to their popularity. I want to make my own bike, I haven't build a bike from scratch before. I want ...
-2
votes
2answers
259 views

What frames fit these requirements?

I'm looking to build up a bike, and while I have certain characteristics in mind I'm not familiar enough with the frame market to know what to look at. This would be my daily commuter/grocery runner. ...
5
votes
2answers
3k views

How does stiffness in carbon frames increase speed?

I have a Specialized Roubaix with a 7r carbon frame; the Tarmac has 11r. Will I notice a speed change if I ride "exactly" under the same conditions? Does the additional 4r = more speed? I am thinking ...
1
vote
3answers
2k views

Can a (relative) beginner adjust spacing on a 501 cromo road frame?

Have acquired a cheap old Peugeot road bike from ebay; nice cromo frame, but it needs a new rear wheel and unfortunately I didn't check the dropout size before buying. It has an OLD of ~120mm, but I ...
1
vote
4answers
2k views

Is there a quality alternative to powder coating when it comes to repainting a steel frame?

I'm not a paint expert and want to make a choice that will last a few years. I know that powder coating will last a long time, but I'm restoring an older bike and don't want to spend too much. Maybe ...
1
vote
2answers
578 views

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

I bought Author Basic (2012) with 17" frame. But I have some back aches after 2 or more hours of cycling (just cycling or with little jumpings) and sometimes I feel little unsure while riding ...
1
vote
3answers
417 views

Skid on small frame

I bought a new, cheap and maybe nasty fixed gear bike. They were only in sizes 54cm and 56cm, so I had to go for 56cm, even though my road bike is 61cm and I'm 186cm. My first few skidding attempts ...
7
votes
4answers
7k views

What should a big guy look for when buying a road bike?

I'm 6ft 4" (1.8m) and 22st (139kg). I do a fair bit of cycling, mainly spinning and mountain biking. I would like to get into road riding so I'm looking to buy a road bike. I want to spend between ...
13
votes
5answers
5k views

Rear wheel slipping out under load

My commuting/cyclocross bike (a Surly Crosscheck) has a problem. If I tighten the quick release skewer to a normal level, sort of firm to close it, then if I step on the pedals hard at some point, ...
8
votes
3answers
1k views

Is there any difference between professionally painting a car and a bike frame?

I'm getting ready to purchase a new bike which I love but I hate the color scheme. I can't find any custom bike paint shops in the area. Can I simply take it to a car paint shop and get a ...
2
votes
3answers
2k views

Difference between “Track Frame set” and a “TimeTrial/Triathalon frame set”

I am going to make a custom fixie bike (possibly with a front brake) that I will use to race on tracks and even commute with. I have been looking at a Planet X frame, and they seem to have very ...
1
vote
2answers
297 views

Can a tandem's front bottom bracket fail catastrophically?

Many tandems have a front bottom bracket that looks like this: The front bottom bracket is mounted off-centre in an aluminum shell called "the eccentric." When the pinch bolts shown in the ...
4
votes
1answer
1k views

What does a good weld look like

Reading various questions and answers around here, I've heard a lot of people say you can tell the quality of the bicycle by looking at the welds. How do I know what a good weld looks like as opposed ...
0
votes
1answer
356 views

Gap between fork and frame

I removed the fork from my old racer because I was hit by a car. When I'm trying to put the new fork on the frame, I get a gap where the top bearing is situated. What should I do? Could I just remove ...
0
votes
5answers
2k views

51cm top tube too small for someone who normally cycles frame with 55cm top tube?

I'm looking to buy a second bike and have found a really nice frame. The bike I cycle at the moment, which fits me perfectly (I am 5'11" (180cm)), has a 55cm top tube. The frame I'm looking at has a ...
1
vote
1answer
396 views

Will a track wheel work with the dropouts on my frame?

I've got an old 7 speed steel frame. I've ordered a track wheel with a spacing of 120mm. My frame has correct drop outs for it, but does it have the correct spacing? If not, what are my options? ...
3
votes
2answers
367 views

Can missing cage mount screws cause the frame to rust?

I have a Cube Analog Disc 2012 bike, and recently discovered that I have no screws inserted in the bottle cage mounts. Is it possible for rust to form in this area? Also, is it possible for the water ...
2
votes
1answer
3k views

Why is the swingarm design uncommon / rare on full suspension bicycles?

While watching a snow biking video, I saw that some of the bikes use a true swingarm design, which matches most motorcycles (as does much of bicycle technology). While this looks rather interesting, ...
2
votes
5answers
846 views

What's a good second lock option for around the frame and wheel?

I've seen a few people, specially bike messengers that use a main lock to secure their bike to a post/fence/etc. but also have a second smaller one to lock the other wheel around the frame. Which is ...
13
votes
3answers
7k views

How do I measure the size of my bicycle frame?

From what point to where do I start measuring? I suspect the bike I'm trying to measure is a 56cm because I usually ride a 54 and this is slightly too big, but I want to be sure.
1
vote
2answers
860 views

Why does a bike frame have to be above 56 cm usually to fit 700c tires?

I first came across this when I was looking at the Surly LHT, but I started to see it everywhere. It seems to me they can just put on a longer fork or something, or is it more for the back wheel?
2
votes
3answers
2k views

How important is it to face the head tube?

I have a frame that I've built up and I'm having trouble getting the tension perfect on the headset, which is not usually something I have trouble with. A friend of mine who is much more knowledgeable ...