Re: brake shoe install placement

Posted by Owen_Dyneto On 2016/4/2 8:26:22

Additionally, if the two brake shoe return springs have different tensions (not all years and models do), the weaker spring goes on the primary (forward) shoe. This provides a force multiplication - the forward shoe makes initial contact and the friction of it against the rotating drum exerts additional force to the action of the rear shoe which since it does more of the work, has the longer lining. An original feature of these Bendix brakes was a different lining material (different frictional properties) for the primary shoe but in recent years most shoe kits use the same lining on both shoes. This type of Bendix brake is generally called a "self-energizing" brake, referring to the additional force transmitted to the secondary shoe by the primary shoe.