Reply to "Seat Rollers"

FWIW, delrin is a proprietary formulation of generic nylon that can also be had glass-filled for even more strength. Any material thats hard enough to resist denting under your weight and is preferably self-lubricating (brass, etc) also works- I've seen rollers of steel, brass, aluminum and plastics of all sorts.
And they're not rocket science to make in your garage with a hacksaw and file; most material comes in lengths of bar-stock, so whats necessary is to choose a material, buy a stick and cut it to size. If you're the sensitive type with quiet exhausts, drill a hole thru each roller and put an Ace Hardware coil spring inside to emininate any rattling (an SOBill mod). In contrast, other seats- Ferrari for instance- use flat poly sliders that are much more stick-prone, need frequent cleaning & greasing, and are much harder to duplicate when the sliders wear out.