Re: 1804-5-7-8 Rear Brake Drums

Posted by Owen_Dyneto On 2020/2/23 14:39:21
Quality brake drums of the era and later were made by the "CentriFuse" (registered trademark) process which effectively applied via some centrifugal casting process a layer of cast iron-like alloy to the inner drum surface. This is because it has far superior frictional properties for braking than simple steel which for a while was (rather unsatisfactorily) used on early Model A Fords, and other cheap cars.

If you regularly follow along on the AACA forums you'll find a large number of threads about processes like spray welding and plasma metalization to restore a proper metal brake surface to old drums. I'm not sure how far these attempts have progressed but its important work as the supply of serviceable drums slowly diminishes.

DON'T cut drums unnecessarily, and most importantly, don't discard old drums!!http://www.stemco.com/product/genuine-centrifuse/

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