THIS grinds my gears......

[silva]

Here is a good picture of the normal evenly distribution of the wear:
https://www.durochains.com/roller-chain-wear-s/154.htm

Pin wear should be even on the entire circumference in an ideal scenario.

If wear DOES concentrate, it has a specific reason, such as dirt/sand getting there, oil not getting there, chainline not straight, ...

 

[JonBuoy]

Here is a good picture of the normal evenly distribution of the wear:
https://www.durochains.com/roller-chain-wear-s/154.htm

View attachment 805155
If wear DOES concentrate, it has a specific reason, such as dirt/sand getting there, oil not getting there, chainline not straight, ...

That pin looks to me like it is from a bushed chain. As far as I am aware most, if not all, bike chains are now bushingless.

 

[matticus]

It's important though, since correct terminology helps understanding.
The word suggests that link plates become longer, they don't,

"the chain stretched" suggests that the chain got longer. Anything else is in your mind! ;-)

[can you tell how this knowledge of pins and internal wear helps a cyclist maintain their drivetrain? I think increased wear from a worn chain cannot be prevented by knowing how the chain is made, or which bit wears. Convince me otherwise!]

 

[Dogtrousers]

What is the difference between elongated and stretched.

I think the stretch/elongate distinction is a nonsense bit of faux pedantry. It just means it has got longer. Common usage of stretch. No problem. Cats stretch, clothes stretch, arms, legs, budgets, even periods of time can be stretched, so why not chains?

The underlying engineering of why is interesting. If not of a great deal of practical use

 

[Ajax Bay]

With regard to pedantry I offer you this.
"Stretch" implies elastic strain caused by tension (force/stress), returning to one inch per link when the tension eases. Whereas "elongate" describes the outcome: a longer chain overall.
Using the latter word mitigates the risk (with undescribable consequences) of cyclists thinking that the sideplates themselves stretch inelastically.

I think the stretch/elongate distinction is a nonsense bit of faux pedantry. It just means it has got longer. Common usage of stretch. No problem. Cats stretch, clothes stretch, arms, legs, budgets, even periods of time can be stretched, so why not chains?

Cats, arms, legs stretch elastically and return to 'norm'. Clothes stretch because their fibres stretch inelastically in two/three dimensions. I leave you to grapple with budgets - but I suggest they break but people pretend they 'stretch'. Carry on.

 

[Dogtrousers]

With regard to pedantry I offer you this.
"Stretch" implies elastic strain caused by tension (force/stress), returning to one inch per link when the tension eases. Whereas "elongate" describes the outcome: a longer chain overall.
Using the latter word mitigates the risk (with undescribable consequences) of cyclists thinking that the sideplates themselves stretch inelastically.

Cats, arms, legs stretch elastically and return to 'norm'. Clothes stretch because their fibres stretch inelastically in two/three dimensions. I leave you to grapple with budgets - but I suggest they break but people pretend they 'stretch'. Carry on.

I think common usage is somewhat more elastic than that.

 

[Webbo2]

With regard to pedantry I offer you this.
"Stretch" implies elastic strain caused by tension (force/stress), returning to one inch per link when the tension eases. Whereas "elongate" describes the outcome: a longer chain overall.
Using the latter word mitigates the risk (with undescribable consequences) of cyclists thinking that the sideplates themselves stretch inelastically.

Cats, arms, legs stretch elastically and return to 'norm'. Clothes stretch because their fibres stretch inelastically in two/three dimensions. I leave you to grapple with budgets - but I suggest they break but people pretend they 'stretch'. Carry on.

I’m still no clearer to what’s going on with chains. Should I just grind off the teeth on the cassette and use a motor bike chain aka Silva in the square taper thread?

 

[Alex321]

I’m still no clearer to what’s going on with chains. Should I just grind off the teeth on the cassette and use a motor bike chain aka Silva in the square taper thread?

I wouldn't do anything Silva suggests TBH, without some other source suggesting it as well.

They very rarely agree with orthodox thought, and in most cases where there is an orthodoxy relating to bikes, there is very good reason for it.

 

[Webbo2]

I wouldn't do anything Silva suggests TBH, without some other source suggesting it as well.

They very rarely agree with orthodox thought, and in most cases where there is an orthodoxy relating to bikes, there is very good reason for it.

I was taking the wee, wee,I should have put a 🫣or the like to finish. Sorry.