420mm chain



crassius

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Jul 23, 2012
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it might, will be a bit wider so could rub on things or if not tensioned right, could fall off skinny sprocket

BTW it is not 420mm 420 - 4/8 x 2/8 (which is 1/2inch by 1/4 inch)
 

Frankenstein

In memory of Frankenstein 1991 - 2018
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Jun 24, 2016
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it might, will be a bit wider so could rub on things or if not tensioned right, could fall off skinny sprocket

BTW it is not 420mm 420 - 4/8 x 2/8 (which is 1/2inch by 1/4 inch)
Is there a difference between 41 and 410 or 42 and 420? Not sure what the 0 is for yet.
 

crassius

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Jul 23, 2012
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2 digit chain is industrial & I've not looked at how they measure chain
 

FurryOnTheInside

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Sep 23, 2013
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Sorry the chart doesn't mention the outside width, mustn't be standardised at all; but actually I think you can infer a little about plate thickness from the relative weights. :)

Ah OK, I see, so there's no real direct correlation between the numbers of the chain and the actual measurements except only the pitch. I guess they draw the numbers from a hat and assign characteristics at random..
Apparently, yeah. Chain drive was invented in 1880 and old standards are so random. :rolleyes:
 
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