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18 votes
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What is this aluminum plate that started rattling inside my Ksyrium rims?

This is a more detailed answer. I cautiously don't agree with Chris that the OP needs to stop riding the wheel, but it does depend on how the rim is constructed. Basically, the aluminum piece is a ...
Weiwen Ng's user avatar
  • 32.9k
14 votes

How you can reduce wind noise in the ears while cycling?

I had this exact problem, and I found a variety of products that can solve this and reduce the wind noise significantly. Cat Ears, Wind Blox, and SlipStreamz being the ones I know of (no affiliation). ...
biketoeverything.com's user avatar
13 votes

What can be done to make a trainer work quieter?

I know this is an old question, but I think I have come up with a nice solution to this problem. I am an engineer and I have dealt with some vibration issues in scientific equipment. When I got my ...
Houston Fortney's user avatar
10 votes
Accepted

What could cause this knocking sound when pedaling? (see video)

Great video - we can see that the knock is twice per revolution of the crank, and that its when the cranks are about horizontal. Does it change speed if you change gear? What about if you pedal ...
Criggie's user avatar
  • 127k
10 votes

Tricks for finding tick tick noise while pedaling

Generally the key to diagnosing a ticking noise is to associate that noise with the correct behavior. You have already narrowed the search to "while pedaling" so it's not wheel related. For ...
David D's user avatar
  • 22k
9 votes
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How you can reduce wind noise in the ears while cycling?

Recently I've tried using bone-conduction earphones. They work surprisingly well. I can hear traffic and noises around me clearly because the "transducers" rest on your cheekbones, about two fingers ...
Criggie's user avatar
  • 127k
9 votes
Accepted

How do mechanics test problem that are only happening under load?

With most noise-diagnosing, my usual protocol is to test ride thoroughly, including on an uphill, as the first step, to try and get the most accurate impression possible of what the customer is ...
Nathan Knutson's user avatar
9 votes

Noisy new chain

It's not the chain but rather new chain/old drivetrain combination. Depending on how worn your chainring/cassette are, the noise may be temporary or permanent. If cogs of your drivetrain are heavily ...
Grigory Rechistov's user avatar
9 votes
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Pedal doesn't rotate freely; occasionally comes with grinding / clicking

The pedal bearings are failing in some way. This may range from a ball or race physically broken to a simple lack of grease. Depending on what kind of pedals you have you may be able to service or ...
Argenti Apparatus's user avatar
8 votes
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Clicking with each pedal stroke, warranty?

It's hard to diagnose the problem remotely, though the suggestions in the comments are good things to try. Normally, I try to give "educational" answers that show people how to fix problems on their ...
David Richerby's user avatar
8 votes

Loud cracking/creaking sound only when cycling uphill

Strangely, I have a Canyon and suffered the same creaking / clicking which developed after a couple of years of ownership. It would appear when putting power down on ie. Hills. In every examination - ...
OraNob's user avatar
  • 3,073
8 votes
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Noisy bottom bracket SHIMANO BB-RS500

I agree with @Criggie regarding the comment that there is a high suspicion of misalignment of the bottom bracket cups (they are not perfectly parallel) when they are installed. This infers a ...
Jeff's user avatar
  • 10.8k
7 votes

Chain noise, fixed gear

Looks a little tight. There should be +/- 0.5 inch vertical movement of the chain possible halfway between the sprockets. Park tool has a great video on single speed chain replacement: ...
Argenti Apparatus's user avatar
7 votes
Accepted

What may be the cause of a loud noise when riding?

My suspicion turns to the spokes. You've said they're a little loose, and one looser than the rest could easily make a noise only when there's weight on the bike, but with no need to pedal. A slight ...
Chris H's user avatar
  • 60.3k
7 votes

Chain cassette noise

The most likely scenario is that the freehub/cassette on your trainer do not line up exactly the same as they do on your normal wheel, and you need to make small tweak to your indexing. In your ...
Andy P's user avatar
  • 18.3k
7 votes

Gears rattling in the back

It's not the gears that are rattling. It's your chain! I suspect your chain is lubricated, not by a proper thixotropic motorcycle chain lubricant, but rather by a snake oil obtained from a rattlesnake....
juhist's user avatar
  • 19.9k
7 votes

What could cause this knocking sound when pedaling? (see video)

Excluding contact between moving parts, sounds from bicycle are mysterious. They may arise from resonance phenomena (if you have some music expertise, you know, if not it is the same issue that ...
EarlGrey's user avatar
  • 3,712
7 votes

Can freewheel of coaster brake be used in combination with derailleur?

Coaster brakes won’t work with external (i.e. derailleur) gearing. Coaster brakes require the bottom section of the chain to be in tension (to pull against the brake assembly). Derailleurs need the ...
RLH's user avatar
  • 1,622
6 votes

Mountain bike crank hits derailleur cable

Nope, it won't hurt anything. It's unlikely, but the worst case is that you might knock the cable crimp (the cap on the end of that cable) off eventually, which could then cause the cable to fray, ...
Poquontchn's user avatar
6 votes

Popping/clicking noise from road bike

You have a Shimano 105 5603 series 10 speed shifter paired with a Ultegra 6700 series 10 speed rear derailleur, as those are both 10 speed they will work together. Those will not work with a R7000 ...
Argenti Apparatus's user avatar
6 votes

What could cause this knocking sound when pedaling? (see video)

Sherlock Holmes said that "when you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth" — and isn't that appropriate given the mystery you ...
Peter - Reinstate Monica's user avatar
6 votes
Accepted

Why does my chain make grinding noise and vibration when I put my bike on my Wahoo Kickr?

I get a grinding noise and vibration when in some gears... Many gears are just fine, but the middle section gives the vibration I had this exact issue on a wheel mounted cassette (on a bike, not a ...
Saaru Lindestøkke's user avatar
6 votes

Tricks for finding tick tick noise while pedaling

You mentioned that it's less regular when out of saddle. That partially sounds like what I'm about to describe, but partially not. This answer may not be helpful to you, but I think it may be valuable ...
user622505's user avatar
6 votes
Accepted

Rattling Brake Lever

Tried that again with no luck and finally got frustrated enough to yank the brake hood and just start unscrewing stuff. Turns out the problem was a loose nut and all I had to do was remove that top ...
user66598's user avatar
  • 1,097
5 votes
Accepted

What is causing this chain clicking noise?

A couple of things I see: I think your derailleur is a bit out of adjustment and is "leaning" towards the lower gears. It's grabbing on the ramps of the lower gear as it goes by. Your B screw ...
Scott Lundberg's user avatar
5 votes

Rear derailleur noise in big/big combination

Drive trains with a front derailleur system are designed with to have overlapping gear ratios ranges for each front chain ring to allow you to spend most of your time riding with the chain not ...
Calvin Smythe's user avatar
5 votes

How can I find out what's clicking on my bike?

First of all, welcome to the "mysterious click" society! The obvious first thing you want to check if this is pedal or not. Find a certain way to reproduce the click and reproduce it by pressing on ...
Rilakkuma's user avatar
  • 870
5 votes
Accepted

Rear view ears at speed

The stock advice is to put zero reliance on your ears ever. There's this issue, there's the related issue of wind direction keeping you from hearing a car even not at high speeds, and there are ...
Nathan Knutson's user avatar
5 votes

Popping/flexing, but *not* when pedaling hard

I would suspect a problem in the bottom bracket, but would also check pedal spindles and bearings. Check for any movement or play between: - The pedals and crank arms - Crank arms and crank axle - ...
Argenti Apparatus's user avatar
5 votes

Loud cracking/creaking sound only when cycling uphill

You are riding uphill. Frame is bending when applying power to pedals. That's normal. My first guess would be that your disc brake pads are rubbing against disc when applying force to pedals. Frame ...
Greg's user avatar
  • 221

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