I saw a neat thing on Speedvision while couch-potatoing on the weekend. A
nice drum brake kit designed to house a modern disc brake setup - the whole
disc/caliper fitted inside the drum, which was vented to allow for
cooling. Perhaps this is an alternative to getting drums re-lined - which
can be done by fully machining out the old lining, turning up a new one and
having it pressed/shrunk into the ally drum. Key would be finding a
machinist who knows enough about the different rates of expansion of the
materials to get the right mechanical interference fit. The material is
probably cast iron rather than steel. I wouldn't be at all surprised if
originals were lined with off-cuts of cast iron waterpipe of suitable size...
Brian
At 08:36 PM 01/20/2000 -0500, Simon Favre wrote:
>Two of my cars have steel-lined Aluminum brake drums. Does anybody
>know if it is possible/reasonable to have them re-lined, or are they
>hopeless? Once a drum gets turned to the max, or so egg-shaped that
>it won't clean up, what's the remedy for rare Aluminum drums? On my
>Alfa, I think I can get replacements. My Formula Junior uses Fiat
>1100/1200 brake drums which are getting pretty scarce. Any sources,
>especially in the SF Bay Area would be appreciated. Thx.
>
>No, I'm not upgrading them to discs...
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