Me again. To be specific... "excessive use of the service brakes results in overheating and leads to brake fade. Brake fade results from excessive heat causing chemical changes in the brake lining which reduce friction and also causing expansion of the brake drums. As the overheated drums expand, the brake shoes and linings have to move farther to contact the drums, and the force of this contact is also reduced. Continued overuse may increase brake fade until the vehicle cannot be sloed down or stopped at all." Also if one gets their brake fluid hot enough, it will boil, and same as when you boil water, it becomes full of air. We all know how well air stops us. Well, unless you have air brakes-nevermind that. The really simple way to look at it is to reduce the kinetic energy of your automobile, you need to transfer energy via friction to heat. This doesn't work near as well if you have to heat up something that's already hot. It won't work. This is why you see cross-drilled, slotted rotors sold as high-performance, and bigger brakes with better ventilation stopping a car so much better. Most likely other stuuf, but that's the meat of it (or my understanding of it anyway). Good luck, and don't tailgate things that smoosh easily :-P ~dave -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Over 25,000 pages of archived Forward Look information can be easily searched at http://www.forwardlook.net/search.htm Powered by Google! |