The problem is that since they deflect when they grab, they are moving forward, rather than staying put, so there is much less braking power than there would be if they would stay put. And obviously when they release the rim there is no braking effect at all. If we assume they spend about half of the cycle grabbing the rim and the other half springing back, their actual time spent in contact with the rim is reduced to 50%. And since they deflect on contact with the rims, there is a further reduction. Bottom line, squealing reduces the effectiveness of your brakes by at least 50%, and possibly much more than that
Comments?
Isn't that sort of what anti lock brakes on automobiles do? Well, maybe not quite as fast....
AH!! Jeepr beat me to it.
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