5.9mm chain... How are they defined?

Artoi said:

How are chains widths defined. With these 5.9mm, 6.1mm chains, what's
the spec reference? Are these measurements based on pin width, across
the outer or across the inner plates? In other words, how can I tell
if my Campag chain is an ultra-narrow 5.9mm or an older style 10 speed
chain?

Widest point - which is the overall pin width.

Mine measure 5.9 to 5.94mm with digital calipers.

~PB

Artoi said:

How are chains widths defined. With these 5.9mm, 6.1mm chains, what's
the spec reference? Are these measurements based on pin width, across
the outer or across the inner plates? In other words, how can I tell if
my Campag chain is an ultra-narrow 5.9mm or an older style 10 speed
chain?

Anyone know?
--

Take your caliper and measure over the outerplates. With these chains
pinwidth is the same.
Well that wasn't so difficult ;-)

Lou
--
Posted by news://news.nb.nu

In article <[email hidden]>,
"Pete Biggs" <[email hidden]>

Quoted message said:

Artoi said:

How are chains widths defined. With these 5.9mm, 6.1mm chains, what's
the spec reference? Are these measurements based on pin width, across
the outer or across the inner plates? In other words, how can I tell
if my Campag chain is an ultra-narrow 5.9mm or an older style 10 speed
chain?

Widest point - which is the overall pin width.

Mine measure 5.9 to 5.94mm with digital calipers.

Conflicting info with Lou Holtman's post where the suggestion was outer
plates.

Any specific reference on this spec? Anyone?
--

Artoi <[email hidden]> wrote in news:artoi-14CE60.13385119122006@news-
server.bigpond.net.au:

Quoted message said:

Conflicting info with Lou Holtman's post where the suggestion was outer
plates.

Not true if you read all of Lou's post: He pointed out that for these
narrow chains, the ends of the pins are flush with the side plates.

Cheers,
David

"Solvang Cyclist" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Artoi <[email hidden]> wrote in news:artoi-14CE60.13385119122006@news-
server.bigpond.net.au:

Quoted message said:

Conflicting info with Lou Holtman's post where the suggestion was outer
plates.

Not true if you read all of Lou's post: He pointed out that for these
narrow chains, the ends of the pins are flush with the side plates.

Yes indeed that's what I said. But because we are dealing with tenths of mm
difference it is better (and easier) to measure over the pins (they do stick
out a teeny bit), which will give you 6.2 mm on a C10 chain and 5.9 mm on a
Ultra Narrow chain. I have a piece of a C10 chain here on my desk to fiddle
around with. Measuring it over the outerplates gives a reading of 5.98 mm;
over the pins 6.12 mm. So the pins stick out 0.07 mm each end. Pete's
suggestion is more accurate.

Lou

In article <[email hidden]>,

Lou Holtman said:

"Solvang Cyclist" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Artoi <[email hidden]> wrote in news:artoi-14CE60.13385119122006@news-
server.bigpond.net.au:

Quoted message said:

Conflicting info with Lou Holtman's post where the suggestion was outer
plates.

Not true if you read all of Lou's post: He pointed out that for these
narrow chains, the ends of the pins are flush with the side plates.

Yes indeed that's what I said. But because we are dealing with tenths of mm
difference it is better (and easier) to measure over the pins (they do stick
out a teeny bit), which will give you 6.2 mm on a C10 chain and 5.9 mm on a
Ultra Narrow chain. I have a piece of a C10 chain here on my desk to fiddle
around with. Measuring it over the outerplates gives a reading of 5.98 mm;
over the pins 6.12 mm. So the pins stick out 0.07 mm each end. Pete's
suggestion is more accurate.

Thanks for the supplemental info.
--