question on campy chainring width
 

I picked up a more then healthy supply of chainrings, all of which are 144bcd S.R. Japan,

And hiding in the pile was
one NOS Campagnolo 52t ring, the width of the teeth is 3mm, or a tad under 1/8

the sungino rings are 2mm

is this ring something special?
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update- now I know this is a track chainring.....

Which makes for a good opportunity to ask something which I've pondered for awhile: :o

Why are track chainrings thicker?

good question, maybe because its a single speed, and the thinner teeth wear faster.
the little rear will wear out much faster.

Of course it's something special Mike, it's Campagnolo! ;)

All my Record road rings are about 1/8 thick. 3.6 mm or so. That's the main plate, however.


Scott-
(who is feeling grateful to be sitting here reading the forum. Power was out for about 20 hours and man, was it a cold night. )

According to the Catalog 18 road rings are for chain 1/2x3/32" (2mm) and Track rings are for chain 1/2x1/8" (3mm). So it is possible you have a Pista ring.

I don't want to be a stickler on words but I true track bike is a fixed gear, not a single speed, therefore not only does the main ring have to be able to take the force of acceleration but also deceleration too. Structurally a thicker ring just makes better sense. Plus the chain tension on a track bike is way different than a bike with a derailleur which also causes more chainring wear.

well its over on the for sale side now.
Im no track rider, but I wish it was a 2mm ring

'cause they're for a wider chain (1/8" vs 3/32" road chain).

SP
OC, OR

It's not that track chainrings are thicker, it's that road chainrings have gotten thinner (3/32" started with 5-speed, right?) and thinner as the appetite for multiple gears continues. ;)

Chris is absolutely correct. A 52t track ring is as big as they get, though. Limited use.