cast iron brake drums

this topic comes up frequently, understandably, and one thing has always puzzled me: contemporary factory literature was very clear that the Company did not want the original steel drums turned at all. so exactly what has changed that a purchaser of new iron drums would have them turned? Cast iron doesn't flex too well, I just don't see the causation leading to turning new drums.

even assuming the hub can be off-center, you aren't curing the wobble, you are merely altering the turn drum to accommodate the warped hub and I don't see how that process transfers to a good braking setup once installed.
 
ericr said:
this topic comes up frequently, understandably, and one thing has always puzzled me: contemporary factory literature was very clear that the Company did not want the original steel drums turned at all. so exactly what has changed that a purchaser of new iron drums would have them turned? Cast iron doesn't flex too well, I just don't see the causation leading to turning new drums.

even assuming the hub can be off-center, you aren't curing the wobble, you are merely altering the turn drum to accommodate the warped hub and I don't see how that process transfers to a good braking setup once installed.
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your curing the wobble on the drum stopping surface which enables for full drum to shoe contact which provides better stopping and heat transfer.
 
Original factory steel drums had a roll hardened surface, which would be cut away if the drums were turned.

This problem doesn't apply to cast iron drums, and they need to be turned as they can't be cast true and smooth.
 
I bought drums and shoes from Randy Gross a couple weeks ago. The castings were very nice, better than OEM I'd say. I have zero regrets and am happy I found Randy.
 
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