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

3
votes
4answers
260 views

Is there any reason for the rear frame and bottom bracket to be asymmetric?

I just received a new non-brand carbon frame and immediately noticed that the bottom bracket looks to stick out significantly more to one side than the other, and the rear bottom forks also seem to be ...
2
votes
2answers
149 views

Is this cracked?

I am buying a bike from eBay and before I bid on it I just wanted to know what you though about one of the pictures. The bike is carbon and it looks like some paint has come off. What do you think ...
3
votes
1answer
94 views

Doubts about carbon fork condition

I've recently bought a second-hand Fuji Jari 1.7 (http://archive.fujibikes.com/2018/Fuji/jari-172). It's in good condition and works without problems, the only thing I'm slightly worried about is the ...
2
votes
2answers
483 views

Time trial carbon frame scratches. Should I concern?

While cleaning my time trial bike I've noticed many scratches in the frame. See pictures below. My tire pressure is usually around 100 psi, depending on the weather conditions or circuit. My wheels ...
1
vote
1answer
85 views

Paint scratch or carbon crack?

I might just be overly paranoid, but does the line in the image (to the left of the glare) look like a paint scratch or could it be a sign of a spreading crack?
3
votes
2answers
213 views

Noticed a scratch on my carbon steerer, should I be worried?

Pictures: https://imgur.com/a/0cWtcsS My nail gets caught in the center and it feels sort of rough. I had my stem tightened at 4NM and the headset seemed to be properly adjusted. I have once ...
2
votes
1answer
103 views

Are full carbon forks less prone to failing from hidden defects than those with alloy steerers?

Are full carbon forks less prone to failing from hidden defects than those with alloy steerers? Even though the mechanics couldn't find problems with Richard Stanton's bike, his fork failed ...
2
votes
3answers
134 views

Is it cheaper to mass produce a carbon frame than an aluminium frame?

I've heard this comment but I have not found any information about it. Is it true?
4
votes
1answer
135 views

Carbon fiber crank arm with scratches--how much damage is a concern?

I have a compact SRAM red crankset with carbon fiber crank arms. On the left side, the outside coating on the end has chipped off from sometimes colliding with the ground while turning. At what ...
7
votes
3answers
551 views

Damping effects of carbon forks

Around where I live the common wisdom is that on a road, gravel or similar bike, a carbon fork will cushion some of the vibration more than a metal fork. On some web discussion forums I see that ...
11
votes
2answers
2k views

Crack in fork or just paint

Yesterday I saw something like a crack in the carbon fork of my roadbike. Now I don't have any clue if this is a really a crack or just the paint. Maybe someone can help me or tell me how to find out. ...
3
votes
2answers
64 views

Can’t find name of a product used in carbon fiber repairs

Several years ago, I watched a youtube tutorial about repairing carbon fiber. I can’t find that video now, but one of the first steps, before applying sheets of cabon fiber, the guy used a compound ...
0
votes
1answer
115 views

How to remove alu seat post from carbon frame?

My aluminium seat post is seized into my carbon frame. To make matters worse the seat post is snapped at the seat post collar - nasty crash. Anyone have a way to get it out? Or is it time for the ...
8
votes
7answers
4k views

Is it worth buying carbon fiber road bike for short commutes?

I'm planning to use a bike for rather short commutes (max half an hour), will the carbon fiber be noticeably more comfortable than aluminium one?
1
vote
3answers
146 views

Upgrading priorities

What is the first component upgrade to a 105 groupset? do I need to stick to Shimano? The crankset is Oval Concepts 520, forged 6066 arms, 52/36T. The bike a 2016 Fuji Altamira 1.3, STI 11 spd, ...
6
votes
1answer
3k views

Can I use brake pads for carbon wheels with aluminum wheels?

I bought a bicycle with carbon wheels, and for training I purchased an aluminum wheelset. I have SwissStop brake pads. Can I use them with aluminum wheels? I don't care much if these pads wear out ...
4
votes
2answers
181 views

How to secure a fully carbon (aero) bike when washing/repairing on a stand?

My bike is fully carbon (frame, seatpost, saddle etc...) and I clean it regularly. I have read/heard from multiple sources that you should not clamp carbon materials when using a bike stand. However, ...
2
votes
1answer
56 views

Loose TT Bar Pads

I have Easton attack carbon TT bars which have pads that are riveted on. One has now come loose and is wobbly. I have tried to drill out and re-rivet them on but the problem comes back. Does anyone ...
5
votes
2answers
773 views

Carbon frame that is designed for strength and durability rather than lightness?

Are there such brands who have overbuilt carbon frame that is intended to last longer? Most if not all frames nowadays seem to always talk about being lighter stiffer, but I never seen one made to be ...
1
vote
1answer
71 views

Clattering brakes on Liv Envie

My 2017 Liv Envie has 'V' style proprietary brakes (Giant Speed Control). Recently they've been making a clattering sounds when they engage the carbon wheel. This is happening on both the front and ...
-1
votes
3answers
235 views

Can I upgrade my XC bike with a full-suspension, carbon fiber MTB frame?

I want to have a full-suspension bike, but since I already have a XC bike with very light, high-end components, I thought it might be cheaper to buy a new frame that supports rear suspension, buy a ...
1
vote
0answers
93 views

Click/snap sound while fastening brake lever onto carbon bar

I was fastening Shimano STI levers onto Bontrager carbon drop handlebars yesterday, with my torque wrench set at ~2nm, and heard a short rather loud click/snap sound shortly after starting to tighten, ...
8
votes
1answer
315 views

Do bikes with carbon frame get detected by induction loops?

Induction loops in my experience usually manage to detect bicycles with steel and aluminium frames. Do carbon frames also get detected? I'm wondering if a possible inability to trigger induction loops ...
4
votes
2answers
230 views

There don't seem to be many (or any?) carbon wheels for 9 speed bikes

I have a 9 speed Shimano Sora road bike and I would like to get some nicer wheels without upgrading the bike or anything else at the same time. Carbon wheels seem to mostly (or entirely) 10/11sp? ...
10
votes
3answers
5k views

Why do bikes have carbon forks?

I have noticed many bikes for sale that are made of mostly one material, such as aluminum, except for the fork which is carbon. I know carbon is very expensive so the manufacturer must be trying to ...
1
vote
2answers
2k views

carbon frame chipped

today while I was riding I lost control of my bike; it was nothing serious, I even fell "standing", but my bike fell on a rock and the carbon frame was chipped. Should I worry about the damage? I ...
3
votes
1answer
84 views

How to clean an stone-stricken carbon MTB without doing damage to the carbon…?

My carbon MTB have got some damage (not cracks) to the paint from stones from the wheels, so I want to clean the damaged specks out, and put on som protection. First of all, will it damage the carbon ...
4
votes
1answer
1k views

How to check carbon frame for cracks

Yesterday, a little boy hit my carbon framed road bike with his little bike while I was already standing. He was not very fast, the normal 'little-boy-dreaming-on-his-bike'-speed. So, nobody got hurt, ...
0
votes
1answer
316 views

Would a carbon fiber fork make a significant difference?

I have a Giant Escape 2012 that i love. I ride it more than my road bike. Ive recently switched from 32mm to 28mm tires and can notice the improved handling and speed. Is a carbon fiber fork a good ...
0
votes
1answer
632 views

Differences between bikes 10 years ago and now?

I'm not too knowledgeable on high-end racing bikes, but I'm looking at getting a used Specialized Roubaix, and I was wondering whether enough significant advances have been made since 2007 to consider ...
1
vote
0answers
272 views

Is this MTB a good bike or a BSO? Deserve carbon MTB [closed]

A guy wants to sell it to me second-hand, according to him hardly used. He bought it for USD850, trying to sell it for USD 180 to me. Is it ok to buy? I'm worried because it's imported wholesale from ...
1
vote
1answer
586 views

What to do with scratched top tube on carbon fiber frame with no structural damage?

No physical damage, if i press into it nor while riding. I did wipe the surface to get rid of dirt and paint chip. Attached also a video to demonstrate the scratch. Should i put epoxy or tape or nail ...
1
vote
0answers
51 views

What is the best head set for a metal fork on a carbon frame? [closed]

I want to put a Chris King or cane Creek headset on a 29 inch carbon fiber frame using a rock shox SID fork. What is the best headset for this?
6
votes
2answers
1k views

How do you spot fake Campagnolo Bora's?

I have my eye on a set of second hand Campagnolo Bora Ultra two rims that are being sold by a friend for someone else. In South Africa the rims cost about +- R25 k (Rand is South Africa's currency) ...
6
votes
2answers
428 views

What are these mounts for on inside edge of carbon fiber fork?

I just got a new Tommaso Sterrata. I commute during the winter so I'm looking to put fenders on. I know I can get fenders that clip onto the fork instead of being mounted, but while inspecting the ...
5
votes
2answers
838 views

carbon seat post to carbon seat tube - necessary to loosen periodically to prevent seizing in place?

I recently (about 4 months ago) purchased a bike with a carbon frame (i.e. carbon seat tube) and a carbon seat post. I've read some nightmare stories about having to replace an entire carbon frame in ...
4
votes
4answers
644 views

How do different frame materials affect the handling of a bike?

I can appreciate that some materials are lighter than others and some have more flex than others, but overall, how do different frame materials affect handling of the bike? Assuming the same geometry ...
1
vote
1answer
8k views

Aluminum forks vs. carbon forks (with aluminum frames) what are the trade offs?

The all-aluminum frame bike will be cheaper. The aluminum fork should be more robust and less prone to breakage. The carbon fork will be more shock absorbing and comfortable. That's kind of how I ...
-3
votes
1answer
434 views

Aluminum alloy or carbon fibre handlebar? [closed]

Should I buy a carbon fibre handebar or an aluminium alloy one for a mountain bike? I would prefer the stiffest, as I do tricks but I don't really know which one is the stiffest. I seen both aluminum ...
1
vote
2answers
191 views

How to clean sticky brake dust from carbon fiber fork?

After having wiped by Specialized Langster 2017 carbon fiber fork with a water soaked cloth, there's still some sticky brake dust left. How do I remove that without harming the carbon fiber or the ...
4
votes
1answer
1k views

drilling hole in carbon frame

I would like to upgrade a carbon fiber bike (Scott CR1) to Ultegra Di2 with internal wiring. Can I drill a hole where the cable holders are located (one next to the fork, one near the bottom crank &...
4
votes
2answers
1k views

Weird discolouration of carbon frame

I bought a used BMC Granfondo 01 which has a carbon frame. The frame is solid (no chips or cracks), but it's full of weird discolouration. It looks like there were be stickers in the places where ...
0
votes
1answer
632 views

Maximum carbon steer tube length? [duplicate]

When cutting a 1-1/8" to 1-1/2" carbon steer tube, what is the maximum length you can leave outside the head tube and the stem clamp? Is there a maximum? How would you determine what the maximum steer ...
3
votes
1answer
963 views

Carbon Fibre Frame Paint Chip from Stuck chain

My chain got stuck between smallest chainring and carbon fibre frame.. The paint chipped in one place and there is a half mm scratch in another place.. What is the chance that it damaged the carbon ...
7
votes
1answer
243 views

Carbon Frame Ding

Today I had my Tarmac propped up against a rock wall and it slid down, scratching the paint/frame on the seat stay. I'm pretty new to carbon frames, and have heard they are relatively sturdy, but ...
2
votes
2answers
1k views

Chinese carbon clinchers - cheap but safe?

Ok. I won't mention links, ebay posts, or anything that may tempt you in any way, like I was. However, they are growing in popularity at my local and some guys swear by them. We all know buying local ...
2
votes
1answer
154 views

can I use an aluminium seatpost to install a tagalong on a carbon fiber frame?

I've been told not to put a tagalong on my carbon bike because the carbon seat post could crack because they aren't designed to withstand the lateral tension of having the tagalong mounted there. I'm ...
8
votes
1answer
3k views

carbon vs aluminium frame vibration absorption? bumpiness?

is there any data/measurements of any aluminium road bikes vs carbon road bikes wrt to vibration. it is widely stated that carbon is a smoother ride, but the best i can find out on the subject is ...
1
vote
1answer
177 views

What type of brake pads should I run on my Shimano RS80 C24 wheels?

I recently purchased a new (used) bike that has Shimano RS80 C24 wheels. The wheels say "carbon" on the side, though a couple of different sites indicate they feature a carbon and alloy laminate ...
3
votes
2answers
893 views

Is it safe to use aluminium seatpost adapter (27.2mm to 31.6mm) for a carbon frame?

I have Cane Creek Thudbuster Seastpost (aluminium) 27.2mm x 400mm which i want to use for a bike with a carbon frame (31.6mm seat-tube). I'm thinking about getting a seatpost adapter/shim from 27.2mm ...