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Newby here! From Amsterdam, The Netherlands. Hello everybody and thanks for having me.
This is a somewhat older thread, which gives a lot of info. However, there is one thing that I would like to solve and that concerns step 3 of the steps bu Gus: weighing the discs. Has anybody ever done that? I wasn't able to find anybody on the net who shared his or her experiences on that. The point is as follows:
My rear CCM discs may loose 70 grams each and the fronts 300 gram. This is clearly indicated on the discs which all have an individual weight to start with (also indicated). For instance, my fronts where 6634g and 6774g new and should be replaced at 6334g and 6474g the latest, respectively. Now I took off the disks after 95k kms and all the discs measured actually heavier than new. From a few grams to 20 grams (calibrated scale). We took the disc with the biggest increase and started to clean it intensively (there was some brake dust in the holes drilled into the surface for instance). After drying etc. this had no significant effect on the weight.
So that leaves the question what the relevance is of the minimum weight indicated on the CCM discs. Or the other way around, how do I weigh the discs ‘correctly’ cq what have I done wrong? The only thing I can think of is that the inner steel part of the discs will corrode to some extent during the years, and FeO is heavier than Fe. But then, this happens to all discs on every car and brings me again to the relevance of indicating a maximum weight loss. Who?
Best, Wieger
PS I am an avid anticipater, read non-braker. My fronts for instance are still 37,6mm (38mm when new). So my brakes are fine. Just trying to explain the relavance of the indicated weights.
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