(May. 18, 2019 2:56 PM)Limetka Wrote: If I understand what you mean correctly, if it worked like that it wouldn't matter which side it hits no? Upon impact, disks have to skip teeth on both sides.
It would matter. The side with the stopper would actually benefit more from it than the side without - just like advertised.
Due to inertia, the disk and driver would attempt to remain stationary when the layer first experiences the impact. This causes the layer, and thus the rubber to push directly against the disk, providing even more burst resistance. If the impact came from the other side, the rubber would actually have less grip on the disk as it would be pushed away from it.
This is not to say that the rubber doesn't help at all if the impact were on the other side. It would, just not as much.