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Old 01-23-2026, 12:49 PM   #7
Joe K
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Join Date: Jul 2010
Location: Cow Hampshire
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Default Re: Brake Drum Thickness

"Ball anvil micrometer."

The classic digital can probably do it approximately - if you can get the blades past the "curve" at the edge. (I.e. frame is "notched" where the two gauge parts slide on each other.)

The advice on Randy Gross is probably the best money you could spend.

It was possible in a past age to buy "reinforcing bands" and have them pressed on the drums - but the effect was improvement - but not great improvement.

Many in that era would seek out Ford Pinto flywheels - cut out the center and use the ring created as a reinforcing band.

Randy Gross is the better scheme. Cast iron drums is where Ford went for the Model A late in 1931 - and retained the cast iron for the next 40 years of Ford drum brake production.

Joe K
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