Video on bike chains.

[matticus]

Downshifts are uphill ( -> bigger sprocket), and always require movement to the left. (Upshifts downhill and right).

So it would make sense to be assymetrical. Like the Haggis.

 

[Ming the Merciless]

There are some which are important which is the inside & outside (where by inside I mean the side which contacts the chainrings & sprockets).

Most does not mean all. We are not in disagreement

 

[Alex321]

Most does not mean all. We are not in disagreement

I know most does not mean all, but "Pretty much any" is very close indeed to meaning all.

 

[Ming the Merciless]

I know most does not mean all, but "Pretty much any" is very close indeed to meaning all.

What are the percentages since you take such a keen interest?

 

[Ajax Bay]

Add more value @Alex321 - which chains are directional and why?
Has this the same importance as mounting tyres in the direction indicated on their sidewall, where manufacturers choose to help in this way.

 

[davidphilips]

Far as i know its only 10 and 11 speed shimano chains, Have been told today that the only difference is not the strengh or size of the side plates but that the inner side plate is shamfered different to allow better shifting? But as said i have fitted them the wrong way and not noticed any difference but perhaps others may?

 

[Jenkins]

There's a number of the SRAM 12 speed chains which can only be fitted one way up due to having a flat top. Why & what difference it makes I have no idea.

 

[Alex321]

Add more value @Alex321 - which chains are directional and why?
Has this the same importance as mounting tyres in the direction indicated on their sidewall, where manufacturers choose to help in this way.

I don't know why.

I only know because I bought one, which basically was flattish on one side (the "outside"), the usual lumpy shape on the other.

I bought it because my chain had broken, and it was all that was in my local Halfords for 11 speed. I didn't even realise at first that it was oddly shaped. I don't even remember for sure what make it was.

 

[Mr Celine]

So it would make sense to be assymetrical. Like the Haggis.

Male or female?

 

[matticus]

Male or female?

OK, I admit - I can never tell them apart.