Placing a mountain bike brake pad under the blowtorch is
not the most reasonable kind of test to check the quality and reliability, especially if you are not 100% sure of the results
Anyway,
we placed a Shimano BR-M445, BR-M446 type mountain bike semi-metallic
brake pads (with our SuperSpeed compound) under the butane blowtorch (1.430°C; 2.600°F) for more than 40 seconds, and the results were very impressive.
The bond between the friction material and the backplate survived the test, the friction material didn’t get any kind of fracture due to thermal expansion/distortion and the steel backplate ended without any deformation or bend after being exposed to a very high temperature.
The bond between the friction material and the backplate survived the test, the friction material didn’t get any kind of fracture due to thermal expansion/distortion and the steel backplate ended without any deformation or bend after being exposed to a very high temperature.
In the pictures you can see the details, and how the friction material is still firmly attached to the steel back plate.
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