Quote:
Originally Posted by Ether
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I don't think they
need to adhere, but I think the roller will perform better if they do adhere.
Intuitively, it seems like the roller could more effectively deal with axial loads if the soft material adhered to the hard material. If the two materials are allowed to slip relative to one another the hard inner core can't transmit the axial load and the soft outer material would be forced to deal with it. Given it's soft durometer, it would deform under load. This would result in a less efficient non-round wheel and would probably also reduce the lifespan of the roller.