Cassette Throb

[Jimmy Welch]

Hi I've notice my cassette and chain get a slight jump and hum when the wheels tightened from the cassette side more than the qr skewer side I have a feeling there may have been a washer sitting on the outside of the rear hub but can't remember for sure am I compressing the cassette when tightening the qr or even compressing of the stays

 

[Oldhippy]

Wheel not straight in the stays perhaps?

 

[sleuthey]

Try tightening the qr lever with the bike upright whilst leaning down onto the handlebars

 

[Jimmy Welch]

It's definitely a possibility but it just seems odd they tightened mainly from one side seems to solve it

 

[Jimmy Welch]

Try tightening the qr lever with the bike upright whilst leaning down onto the handlebars

Hi I'll give it a go what's the thinking behind this don't forget its the rear wheel

 

[sleuthey]

Hi I'll give it a go what's the thinking behind this don't forget its the rear wheel

Sorry yes the saddle then. I was told to do it by a bike mechanic.

 

[lazybloke]

"Cassette throb" ????
I've come across Cyclechat's mechaphilia section.

 

[Jimmy Welch]

"Cassette throb" ????
I've come across Cyclechat's mechaphilia section.

😄😄 throb pulsation underlying alien noise

 

[Ajax Bay]

when the wheels tightened from the cassette side more than the qr skewer side

Please explain what you mean.
The QR lever should be open. The nut on the RH side should be tightened by hand so that when the lever's closed it's tight dent in palm of hand tight.
The QR lever causes zero "compression" on the cassette.
How many sprockets?

 

[gbb]

This may, only may be a similar thing to what I have experienced a couple of times.
Replaced a chain, old cassette remained. Immediately got a 'throb', some resonance that lasted for maybe 50 miles .
It doesn't always happen but definitely has happened a couple times.
I never nailed down what was happening but a new tight chain re meshing with the cassette seemed plausible. Perhaps as OP has tightened the qqr, it's put more tension on the chain and given a similar result.

 

[Ajax Bay]

Perhaps as OP has tightened the qqr, it's put more tension on the chain and given a similar result.

I can't see the mechanism that'd put more tension on the chain (other than push on the pedals). The axle has only one choice of position in vertical dropouts however tight the QR skewer is.
My inference (hence my questions in post) is that the OP is tightening the QR with the lever in closed position both 'times'.
Clearly you'd get more leverage using the (err) lever by hand that you would if you just tightened the not (by finger): the first would be 'not tight' and the second would be 'a bit loose'. The latter might quite possibly generate the result described in the OP.

 

[Jimmy Welch]

This may, only may be a similar thing to what I have experienced a couple of times.
Replaced a chain, old cassette remained. Immediately got a 'throb', some resonance that lasted for maybe 50 miles .
It doesn't always happen but definitely has happened a couple times.
I never nailed down what was happening but a new tight chain re meshing with the cassette seemed plausible. Perhaps as OP has tightened the qqr, it's put more tension on the chain and given a similar result.

Yeah funnily enough I did take the chain off for a proper solvent wash I'll check the quick links as well

 

[Ajax Bay]

Hi I've notice my cassette and chain get a slight jump and hum when the wheels tightened from the cassette side more than the qr skewer side I have a feeling there may have been a washer sitting on the outside of the rear hub but can't remember for sure am I compressing the cassette when tightening the qr or even compressing of the stays

Please explain what you mean.
The QR lever should be open. The nut on the RH side should be tightened by hand [with the QR lever open] so that when the lever's closed it's tight dent in palm of hand tight.
The QR lever causes zero "compression" on the cassette.
How many sprockets?

How do you tighten your QR skewer @Jimmy Welch ?
AASSIA

 

[Ajax Bay]

How do you tighten your QR skewer @Jimmy Welch ?
Maybe the reason you're having smallest sprocket issues is that the axle is not properly tightened (see above).

 

[cyberknight]

"Cassette throb" ????
I've come across Cyclechat's mechaphilia section.

Oooh matron !