Differentiate between Drum and Disc brake with justification.
Sr.No .
|
Disc Brake
|
Drum brake
|
1 |
Friction surfaces are directly exposed to the cooling air.
|
Friction occurs on the internal surfaces, therefore heat dissipated only by conduction through the drum.
|
2 |
Flat friction pads are used.
|
Curved friction linings are used.
|
3 |
There is uniform wear of friction pads.
|
Non uniform wear of friction linings.
|
4 |
There is no loss of efficiency due to expansion.
|
There is loss of efficiency due to expansion.
|
5 |
Weight is less so saving upto 20 % is possible.
|
Comparatively higher weight.
|
6 |
Disc brakes have comparatively better anti-fade characteristics.
|
Comparatively poor anti-fade characteristics.
|
7 |
Simple in design.
|
Complicated design.
|
8 |
Comparatively easy to remove and replace friction pads.
|
Removal and replacement of brake linings is difficult and consumes more time.
|
9 |
Less frictional area
|
More frictional area
|
10 |
Pressure intensity is more
|
Pressure intensity is less
|