HOME and how to join Forum Open Area General Scott topics Brake drum Re: Re: Brake drum


Putting a liner into a brake drum is such a safety-critical thing to do that most firms will refuse to do it. Putting a liner into the freezer to shrink it a few thou, and then dropping it into a stinking hot drum, to get a good interference fit, is about the only way to do it, but what will happen when the drum heats up in use !? The liner, in theory, will expand a bit before the drum, but what happens when the drum heats up as well? If the drum and the liner are similar metals then the interference fit should be maintained, but I still don’t like to consider it….
Better to look for a good drum I think.