At 05:35 PM 5/25/2011, Karl Wolz wrote:
>The front tow loop, while not a piece of 12mm rod like the back loops, is
>also not "sheet metal".  It is the same material of which the frame is made
>- about 3-4 mm thick, and firmly welded to the frame.

4 mm thick is 8-ga sheet metal by the Birmingham gauge, and between 8
ga and 9 ga by the steel gauge and galvanized sheet gauge.  To an
engineer it's definitely sheet metal.

Thickest gauge by steel guage is 3 ga, which weighs 10 lb per ft^2
and is .2392" thick.  Generally speaking if you can stamp it in a
press, it's sheet metal.

Yrs,
d