Garland Gray wrote:
Thanks all.
I will be trying the GFN for one sheave anyway, but will get a delrin
alternate as well . Size may determine which ends up being used, as they
bracket the original sheave in diameter.

Garland, do you have a machinist friend, or maybe a hobbiest friend with
a lathe? Making a sheave from a chunk of Delrin is trivial, or
aluminum, or brass, stainless is a bit trickier, not to mention expensive.

Cheers
Martin (have lathe, will travel)