420mm chain

[Kris Nichols]

Have a pk 80 from dax would a 420 chain work on these engines

 

[crassius]

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]

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]

2 digit chain is industrial & I've not looked at how they measure chain

 

[FurryOnTheInside]

Twice the weight of a 410... Not that you asked, just a personal remark.

 

[Frankenstein]

View attachment 76911

Twice the weight of a 410... Not that you asked, just a personal remark.

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..

 

[FurryOnTheInside]

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.