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Discussion and questions related to the course Brake System Design and Optimization
= Resolved threads
The effect changing pads (like for like), even while quite a bit of friction material remains on the discarded ones, is quite often described by drivers as generating an noticeable improvement in their braking experience. What are the factors that give rise to this kind of reaction? For example, is it quite common for the frictional properties of pads to reduce/degrade as they go through multiple heat cycles? Or perhaps it's something to do with the ability of a larger mass of brake pad material when new to dissipate heat faster/more efficiently? Grateful for any thoughts on this.
Pads might be overheating a "glazing", and new pad is not glazed yet? What if you remove the pads, scuff them on a belt sander and re-install. is the performance better, worse or the same?
Also, I would look for any mechanical issues - like burrs on the sliding surface that are preventing the pad from moving freely, or pad taper wear.
As David said,and pads may be tapered which will affect the contact pressures, the additional thickness may be reducing the heat transfer to the fluid, etc. Depending on the application, the brake fluid may be flushed with fresh, which is another variable?
But it also depends on what the driver(s) consider an improvement?
