I am looking for some ideas as to how I should go about refinishing my JD rear brake drum. Right now the wall thickness is very minimal. It also looks like it has started to crush over time. Here was my plan.
Make some type of shaft that will locate the drum on its center axis. With the shaft in the lathe I can see how true the braking surface is to the center line. Then I was going to take a piece of 6" steel pipe and weld build the outside so it just fit into the ID of the breaking surface. The Pipe would ride on a live center in the lathe. My hopes with the pipe is to reduce as much warping with the welding process as possible since the metal is very thin now. Once all this is assembled I plan to weld build the outside of the braking surface with a Mig machine and mild steel wire then grind to a smooth finish.
Would there be a benefit to hard facing the braking surface? Does any one know what the final thickness of the break drum should be?
Think it will work?
Mike
Make some type of shaft that will locate the drum on its center axis. With the shaft in the lathe I can see how true the braking surface is to the center line. Then I was going to take a piece of 6" steel pipe and weld build the outside so it just fit into the ID of the breaking surface. The Pipe would ride on a live center in the lathe. My hopes with the pipe is to reduce as much warping with the welding process as possible since the metal is very thin now. Once all this is assembled I plan to weld build the outside of the braking surface with a Mig machine and mild steel wire then grind to a smooth finish.
Would there be a benefit to hard facing the braking surface? Does any one know what the final thickness of the break drum should be?
Think it will work?
Mike
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