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Old 04-06-2019, 06:55 AM   #2
Joe K
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Join Date: Jul 2010
Location: Cow Hampshire
Posts: 3,615
Default Re: Stamped Brake Drum Picture?

Stamped brake drums are about 95 percent of brake drums out there. Characterized by a fairly thin section and a "rolled" edge.

Cast drums tend a bit thicker, have an edge that is "square & machined" and can be characterized by a "sandcast" look of the external drum surface (i.e. the casting sand leaves its own imprint in the solidified metal - this on older cast drums.)

Here are pix of original drums and backing plates removed as a unit. Note the rolled edges of both drum and backing plate which nearly "fit together."




Here are cast drums. Note the thicker section and the squared off edge.





Joe K
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