Cassette Making Weird Noise

Lauris

Active Member
Hi all


Today I noticed that my cassette was making a weird noise when I spin it.

The noise is not noticeable when riding the bike I don't think and it is not causing loss of speed.

It sounds like sand or maybe grit somewhere but I am just guessing.

I cleaned my whole bike today and the noise is still there.

Any suggestions on what to do next?
 

alicat

Legendary Member
Location
Staffs
Can you post a video that will let us hear the noise and tell us the cassette make and model?
 
OP
OP
L

Lauris

Active Member



Obviously, the clicking noise is normal but the other one with it is not you may need to play it with headphones loud to hear it.

Cassette: Sunrace 8-speed 11-32t
 

winjim

✊🏻✊🏾 🌈 ♀️ 😷
Are my eyes playing tricks on me or are some of the sprockets turning and the others not?
I think it's the speed of rotation catching up with the frame rate of the camera.

18mq8jmwoykzmjpg.jpg
 

Cycleops

Guru
Location
Accra, Ghana
@derrick beat me to it!
 

Sharky

Guru
Location
Kent
Are my eyes playing tricks on me or are some of the sprockets turning and the others not?
Yes - the eyes and mind can't keep up with the speed of the cassette and makes it look stationery of going backwards.

But did you know that a zebra's stripes make use of this phenomenon. When being chased by tigers etc, the stripes give the illusion that the zebra is going backwards and so confuse the big cats.
 

rrarider

Über Member
Location
Liverpool
Yes - the eyes and mind can't keep up with the speed of the cassette and makes it look stationery of going backwards.

But did you know that a zebra's stripes make use of this phenomenon. When being chased by tigers etc, the stripes give the illusion that the zebra is going backwards and so confuse the big cats.

I expect that a tiger would be confused if it saw a zebra. Its first thought would probably be "What the hell am I doing in Africa?"
 

Sharky

Guru
Location
Kent
I expect that a tiger would be confused if it saw a zebra. Its first thought would probably be "What the hell am I doing in Africa?"
Or in Knowsley Safari Park.

My old school used to hold it's annual cross-country run through Knowsley Park. Thankfully it was before they made it into a safari park.
 
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