Hi folks,
External contracting brake consists of a drum, an external contracting brake band, linkages and operating lever. It is usually the hand brake of the automobiles. The drum is fitted with the transmission outputs shaft and rotates with it. The brake band having lining of frictional material encircles the brake drum. In order to hold the rotating brake band is contracted about the drum. In order to hold the rotating break drum by means of a lever and linkage. When the hand brake is applied, the brake band first tightens its grip on the drum. This stops the motion of the drum. The car is thus stopped. When the hand lever is released, the brake band losses its grip on the drum. The car is now ready for starting. Thank you.
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