IML: Disc v Drum Brakes

["Bob Schmitt" <BSBRBANK@xxxxxxxxxxx>]

Hi all -

Typically nice background explanation from Dick.

Just thought there are at least two ways to develop 
some facts for this discussion:

1. Compare a disc-brake converted Imperial with an 
original for stopping distances.

2. Look at old road tests for any cars where disc 
brakes were an option and compare with a test of the 
same car with drum brakes.  No specific suggestions 
and probably hard to find.

I've seen one '66 that claimed to be convereted to 
disc brakes, but don't recall the ownership.  Think it 
was at a California statewide meet 5-7 years ago.

Any other conversions out there?  

Bob

This all brings me to the conclusion, that (except for 
cars in bad condition, repeated stop situations, or 
looooong downgrades where the driver doesn't 
downshift, thus causing the drums to overheat and 
expand, also lowering the linings coefficient of 
friction to the drum due to overheating,) there is no 
significant difference in stopping ability between
disc brakes and drum brakes.

I have a feeling I'm missing something here - so 
please take me seriously and tell me where I'm wrong.



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