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techtalk:ref:wheels05 [2020/06/12 20:54] hippysmack [Brake Pad Material] |
techtalk:ref:wheels05 [2020/06/13 03:31] (current) hippysmack [Brake Pad Material] |
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| ====== Brake Pad Material ====== | ====== Brake Pad Material ====== | ||
| - | **There are 3 common types of formulation for a brake pad friction material**. \\ | + | **There are 3 common types of formulation for a brake pad friction material**. ((https://ebcbrakes.com/articles/what-is-brake-fade/)) \\ |
| * **Organic**: | * **Organic**: | ||
| * Organic brake pads inherit their name from the organic phenolic resins used to bind together the different compounds used in the pads construction. \\ There are countless different types of thermoset phenolic resin. \\ But they can all be generally considered to have a maximum temperature up to which they are thermally stable. \\ Above it's max operating temp, the phenolic resin binding agent becomes altered by heat. \\ And it effectively ‘boils’, expelling an appreciable volume of gas as it degrades. | * Organic brake pads inherit their name from the organic phenolic resins used to bind together the different compounds used in the pads construction. \\ There are countless different types of thermoset phenolic resin. \\ But they can all be generally considered to have a maximum temperature up to which they are thermally stable. \\ Above it's max operating temp, the phenolic resin binding agent becomes altered by heat. \\ And it effectively ‘boils’, expelling an appreciable volume of gas as it degrades. | ||
| - | * **Sintered metallic**: | + | * **Sintered metallic**: ((https://ebcbrakes.com/what-is-sintering/)) |
| * This is the fusing together under, heat and pressure, of metallic particles and blending of various other elements to enhance friction properties and wear life. \\ Although attempts were made by the OEMs to cut costs of Sintered brakes by using sintered IRON, that was deemed a failure and these days the base material is copper. | * This is the fusing together under, heat and pressure, of metallic particles and blending of various other elements to enhance friction properties and wear life. \\ Although attempts were made by the OEMs to cut costs of Sintered brakes by using sintered IRON, that was deemed a failure and these days the base material is copper. | ||
| + | * The advantage of the sintered metal pads are that a more compact brake pad in size can be made which also has considerable durability advantages over its earlier stablemates. ((https://ebcbrakes.com/articles/how-to-make-brakes/)) This allows the brake caliper to be smaller and reduces the all important unsprung weight of a motorcycle. Sintered brakes are usually made from a copper alloy blend although sintered iron was tried with little success for cost reasons in the 90’s. | ||
| * **Semi-metallic**: | * **Semi-metallic**: | ||
| * These are a ‘hybrid blend’ of one and two above. \\ They have properties that typically lie somewhere in the middle of both. | * These are a ‘hybrid blend’ of one and two above. \\ They have properties that typically lie somewhere in the middle of both. | ||
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| Different formulations of brake pads can therefore perform very differently from each other and it's important to use the right pad for the right application. \\ | Different formulations of brake pads can therefore perform very differently from each other and it's important to use the right pad for the right application. \\ | ||
| - | **There two very different kinds of brake fade** \\ | + | **There are two very different kinds of brake fade** \\ |
| - **Green fade or early life brake fade**: | - **Green fade or early life brake fade**: | ||
| * This is quite common and almost normal when new brake pads are fitted. \\ It is merely a settling down of the components after install and can be gone in a few brake applications. \\ To minimize or avoid this effect it is wise to drive cautiously when new brakes are fitted and give yourself a little extra braking distance for the bedding in period. \\ The bedding in period for new pads can be anywhere up to 500 miles urban use. | * This is quite common and almost normal when new brake pads are fitted. \\ It is merely a settling down of the components after install and can be gone in a few brake applications. \\ To minimize or avoid this effect it is wise to drive cautiously when new brakes are fitted and give yourself a little extra braking distance for the bedding in period. \\ The bedding in period for new pads can be anywhere up to 500 miles urban use. | ||
