Frames or components made from carbon fiber, possibly even about carbon accessories.

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5
votes
1answer
83 views

Is there a ulock mount that uses the bottle cage openings?

I found one that a guy made I think with 3d printers or something but seems like an excellent solution. I have a carbon frame bike and I don't want to use traditional ulock mount at the top because ...
7
votes
5answers
47k views

What are the pros and cons between an aluminium and carbon frame?

I'm after a mountain bike and I've narrowed it down to the Cannondale F29 (based on reviews, plus I like the look of the bike). My question is, should I go for the carbon bike or the alloy bike? I'm ...
12
votes
5answers
5k 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 ...
6
votes
2answers
124 views

Safest way to carry luggage on my carbon frame?

I'm planning a 5 day trip on my Trek Madone 4.5. We are planning on staying motels so don't need to carry camping equipment. I need to find some type of rack that is compatible with my carbon frame - ...
3
votes
0answers
127 views

Ritchey carbon MTB fork dropout wear

I was inspecting my carbon fork dropouts and I noticed the deformation of the edge on the outer side of the right dropout that makes me unhappy. I don't know what is the reason of this issue. Here are ...
6
votes
2answers
93 views

Lugged carbon frame repair

In broad terms, I'm wondering if it is possible to repair a high quality lugged carbon frame, say a Colnago C60, that has been cracked in the top and/or down-tube. Normally once a carbon frame has a ...
21
votes
1answer
12k 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 ...
5
votes
3answers
2k views

Do I need to be concerned about a carbon frame if I attach a bike trailer?

We have a bike trailer with the hitch attached to the rear axle. The frame of my wife's bike frame is part carbon (right around the rear axle), which I understand is more brittle than other materials. ...
4
votes
1answer
113 views

When to change road bike

I own this Fuij Roubaix 2008 model road bike, its an aluminium frame with carbon front and rear forks. I already did 25000km on the bike and replaced wheels, chainring, a couple of cassettes, chains ...
4
votes
2answers
107 views

Can a carbon fiber bike have rack eyelets?

With the new generation of gravel bikes, I was curious if any of them are being made with carbon fiber frames and rack eyelets. Are carbon frames capable of bearing the weight of racks installed on ...
11
votes
4answers
4k 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 ...
3
votes
1answer
145 views

Specialized Allez - Upgrade to Carbon Seatpost for Long Distance Comfort?

A bit of background: I've been riding a stock 2012 Specialized Allez since I bought it (in 2012). I am a larger guy (105 kg), and tend to go for rides in the 50-100+ km range. No matter what I wear ...
1
vote
2answers
856 views

Carbon frame cracks

I have a 2010 Gary Fisher Cronus, when I brought the bike in for a tune up this spring the bike shop told me they wouldn't do it because of cracks around the seat post. They pointed out that I had my ...
3
votes
3answers
3k views

Tight Seatpost Installation

I'm having a bit of a problem installing my seatpost. I have a 31.6mm carbon-wrapped aluminum seatpost which fit perfectly fine in my previous aluminum frame. Unfortunately, that frame cracked, ...
2
votes
1answer
105 views

How to polish carbon frames?

My carbon frame has some slight scratches and some black gunk around the seat stays. What is the best way to polish the frame to bring it back to its original appearance? I was thinking of using a ...
2
votes
1answer
258 views

chain stay protection on carbon frames

I am worrying about this type of protection against chain sucks. After 1-2 months with a new Cannondale F29 2, I've found out that this part was not where it should be. Instead, the chain did it's ...
5
votes
2answers
221 views

U-lock mount bracket on carbon frame?

I took my bike to the bike shop to get remove the quick release wheel things, so that I can use only one U-lock, anyways they changed it for me but the bike mechanic really got mad at me and said 'you ...
0
votes
2answers
137 views

What are the advantages of having a aluminium frame? [duplicate]

are there any advantages that an aluminium body brings to the tables over carbon frames?
5
votes
2answers
195 views

What's the best way to fix carbon to titanium?

I'm building (experimenting if you wish) something out of the old bike parts and I need to fix two parts together one titanium and carbon. Basically the parts are two tubes one made of carbon of a ...
2
votes
2answers
234 views

Can I put a rack on a carbon road bike?

I got a carbon-framed Kestrel Talon Road Bike recently but I also want to use it for commuting to and from work and I want a place to put my lock and other stuff on the bike. Is it possible to have a ...
12
votes
3answers
1k views

Should I avoid sitting on top tube on my carbon bike?

In another bicycle discussion forum I encountered a thread about possibility to damage carbon frame by sitting on top tube while stopped. I see some sense in it, as generally tube walls are a lot ...
2
votes
4answers
3k 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 ...
4
votes
4answers
872 views

Would a person standing on the top tube damage a carbon fibre road bike?

I was riding my aluminium bike and I met some people who had been trapped in a locked park, so I helped them escape by holding the bike against the fence and letting them stand on the top tube to ...
-1
votes
1answer
78 views

Is a carbon fibre cyclocross or mountain bike likely to be lighter than an aluminum roadbike?

If the two are the same frame size, generally roadbikes are lighter. But if the roadbike is aluminum and the mountain bike is carbonfibre, is it probable the mountain bike frame will weigh less?
0
votes
1answer
42 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 ...
3
votes
4answers
357 views

Should I worry about a chipped carbon mountain bike frame?

The other day while I was racing my Specialized Stumpjumper I noticed a chip on the frame. It's on the rear support bar right behind the seat post between the rear tire. My teammate who is a mechanic ...
1
vote
1answer
70 views

Avid Shorty 4 Carbon Brake Pads

I have Avid Shorty 4 brakes on a cross bike. I would like to use zipp 303 carbon wheels, but I am not sure about brake pads. The brake pads on there now are a combined cartridge and pad set. You ...
0
votes
1answer
1k views

How to fit BB bearings to install Ultegra Crank on road bike Wilier Cento 1

I've bought a used Wilier Cento 1 carbon road bike frame (not the new Cento1SR, but the previous model). Now I would like to transfer all Ultegra 6700 groupset components from my existing bike to it. ...
5
votes
4answers
2k views

How to cut carbon handlebars

Last year, I installed carbon bars on one of my mountain bikes and I'm finding them too wide. I've been told that taping over the points you're going to cut at will prevent fraying/roughness, but what ...
1
vote
1answer
101 views

Irregular sounds on new 50mm wheels at speeds over 16mph

I just bought new Chinese Carbon 50mm tubular wheels and I have a number of noises that are driving me crazy. There is a whistling or irregular whooshing sound on every rotation. Besides the normal ...
2
votes
2answers
635 views

Recessed brake pivot nut stuck in carbon fork

The recessed pivot nut for my front brake calliper (no. 4 in this diagram) has seized inside the fork. I've managed to remove the brake calliper itself by unscrewing it from the front, but the nut is ...
2
votes
1answer
154 views

Carbon-wrapped Aluminum seatpost?

I have the seatpost shown in the pictures below. It came on a 2010 Specialized Tricross. It looks like Carbon fibre on the outside, but when you look at the open end of the tubing, it actually looks ...
5
votes
1answer
6k views

Difference between UD, 3K and 12K carbon finish?

What does UD, 3K, 12K carbon mean and how do they differ?
2
votes
1answer
892 views

Do Carbon Wheels Stay True Longer Than Aluminum Wheels?

Does a race quality carbon wheel set stay true longer than an aluminum one (with equal abuse/mileage) ? It seems like the properties of carbon would resist flat spots and warping better than ...
13
votes
7answers
30k views

Carbon bikes make me nervous. Can you ease the tension?

Is it only me, or do Carbon bikes make others nervous! I realize that carbon fibre is strong, but for some reason, having a bike that isn't made out of metal seems like asking for trouble. My main ...
2
votes
4answers
850 views

Does anyone sell a direct-drive recumbent with no handlebars?

This document well describes the benefits of a direct-drive recumbent. Is there any carbon-frame recumbent, commercially available, that implements all its recommendations. And what are the pros and ...
0
votes
1answer
217 views

Does a carbon frame need two-bolt seat clamp?

Does a bike with an alloy seat post and a carbon frame need a seat post clamp with two bolts? Most clamps these days seem to be either quick release or single bolt. Is that safe to use with my set up? ...
6
votes
1answer
631 views

Carbon Wheel Heat Bending

After riding about 800m downhill, I got this: BTW, this is TriAce Wheelset for Dahon Mu Ex 2014. Do you think this is safe to ride? Can I repair this?
1
vote
2answers
291 views

painting an aluminum/carbon frame

I have a frame I would like to get repainted. It is a composite of aluminum and carbon fiber (Al main triangle, carbon fiber seat/chain stays). The carbon fiber is unpainted (maybe a clear coat) and ...
2
votes
1answer
97 views

Carbon fork torque

I notice that my fork is squeezed together when I tighten the quick release mechanism. Is it possible then to over torque the quick release and squeeze the fork too close together?
5
votes
3answers
2k views

Can a carbon fiber mountain bike handle cool/cold weather?

It is late summer in the US and I am starting to look forward to autumn and winter mountain biking. I have a carbon fiber frame though. Didn't get to ride it last winter due to a broken collar bone ...
3
votes
3answers
519 views

Carbon fibre vs aluminium for racing

I've been commuting on a mountain bike these past 3 years. Now I want to get into road bike racing. Is it worth saving up money over a few months for a carbon fibre bike? Or should I just go and buy a ...
2
votes
1answer
341 views

Can lock on grips go with carbon fiber handle bars?

How prudent is it to install lock on grips onto carbon fiber mountain biking handle bars? Are there some grips that will work and some that won't?
28
votes
6answers
36k views

Why is carbon fiber inherently weak? Or is it?

This question got me to thinking: If it were possible for me to use a carbon frame, I would, but the expense and my riding style keep me using steel and aluminum. (I like hauling stuff on racks and ...
5
votes
1answer
258 views

Carbon fiber chip

See the white mid picture in the shape of a canine tooth. The sticker / veneer came off / separated. Is it something I should worry about? Is there something I can do? Niner Air Nine Carbon. I ...
0
votes
2answers
516 views

Is there a device for protecting your carbon-soled road shoes from the cleats?

I recently came across this product:, which is a stainless steel shield to place between your mountain cleats and your carbon soled shoes, to prevent damage to the carbon. Has anyone seen something ...
4
votes
1answer
2k views

Felt carbon steerer compression plug removal

How do I remove a compression plug (aka. expander bung) like this one? Most guides I could find assume that there's a 6mm hex Allen opening that allows tightening/loosening the plug but that's ...
6
votes
5answers
41k views

How to tell if a carbon frame is damaged or if the paint just has stress cracks

I am looking at a carbon framed road bikethat has me concerned.On the topside of the bottom bracket,drive side there is a very small hairline crack in the paint.The seller states that it has been ...
2
votes
5answers
1k views

Advice needed re Carbon Fiber vs Shocks

I am an occasional rider who bought my last bike 15 years ago (an all-aluminium Saracen with shocks). I've put about 400-500 miles this year and am thinking of taking up one of the Cycle to Work ...
2
votes
1answer
2k views

How to pull a carbon seatpost out of a carbon frame?

How do I pull out a carbon seatpost on a carbon frame? It seems so hard for me... Do I need a special tool, or just ask help from a local bike shop? done with the seatpost. I made the frame and ...