Hugo Miller Hugo at aruncoaches.co.uk
Sun Nov 19 11:22:07 EST 2017

### The laws of physics say it shouldn't make any difference. If you have 
high spots, they will get hot, but (ignoring fade) they will be as effective 
since there is more pressure per square inch of contact area if it's only 
contacting a portion of the total area. I say it "shouldn't" make any 
difference, as I'm not convinced the theory and the practise are the same in 
this case!

-----Original Message----- 
From: English via VirtualVairs
Sent: Sunday, November 19, 2017 4:17 PM
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Hard to find today because of the health hazard of the dust created , but 
all my brake shoes have been ground to fit the drums. This maximizes surface 
contact.  I used an old AAMCO shoe grinder . Most shoes , if you set them in 
the drums will not have much more than 50% contact area on older turned 
drums. They will wear in somewhat , but not much , not too quickly.Makes a 
big difference in stopping , especially FC's !Regards, Tim Colson
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