
Originally Posted by
BilboBoggles
.....
I reckon you can't gauge drag by just jacking up a wheel and turning it is as that is very different to running drag where wheel runout tends to throw the shoes from contact with the disc or drum..
This is not the case with drum brakes. With these rear brakes, one leading/one trailing, wheel movement will tend to throw one shoe away from the drum, but the other one will be dragged into greater contact. Wheel runout will have no effect on drum brakes unless it is way out of spec. As the drum heats up and expands, the drag will, however, decrease.
John
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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