John B. wrote:

18-8 is a general designation for stainless
steel having approximately (not exactly) 18%
chromium and 8% nickel.

The term is very none exact and can be used
for almost any of the 300 series, 302, 302HQ,
303, 304, 305, 316, etc., which do have
different properties.

OK, great!

I also found

18 Z 1/2"

on the sprocket. I suppose 18 is the number of
teeth, and 1/2" is the diameter of the wheel
axle hole .

On the hub shell, it says 36 which again
I suppose is the number of spokes (indeed
18*2=36), but it also says 2.8...?

Spokes are 2mm or 2.2mm at the elbow so perhaps
it is the spoke hole diameter in mm on the
hub flanges?

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underground experts united
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