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fast150 · 04-06-2019, 07:22 AM

I have noticed that the original steel drums do not have the large chamfer around the lug bolt holes. The new cast drums have that chamfer as pictured in Joe K's post above. I think that chamfer made swedging the lugs more difficult. If the drum material came up near the top of the step on the lug bolt, one would not have to swell the lug diameter so deep. With the large chamfer there, it seems to take more pressure, and the swedging tool has to go down into the chamfer further. It takes great care not to crack the casting between the lug hole and the large center hole. Just my observation.

04-06-2019, 07:22 AM	#3
fast150 Junior Member Join Date: Dec 2018 Location: Humboldt, TN Posts: 15	Re: Stamped Brake Drum Picture? I have noticed that the original steel drums do not have the large chamfer around the lug bolt holes. The new cast drums have that chamfer as pictured in Joe K's post above. I think that chamfer made swedging the lugs more difficult. If the drum material came up near the top of the step on the lug bolt, one would not have to swell the lug diameter so deep. With the large chamfer there, it seems to take more pressure, and the swedging tool has to go down into the chamfer further. It takes great care not to crack the casting between the lug hole and the large center hole. Just my observation.