On Thu, 2007-01-18 at 22:29 +0000, caryscotthere wrote:
Hello Tughom,
<snip>
The old twisted rope type belts did work OK. They were made of
polyester thread twisted and coated with black rubber of some kind.
How they got the rope to retain the twist is a mystery to me. Anybody
know more about this?
<snip>
I think they spin the yarn in Z twist (anticlockwise) and ply it in S
twist, kind of pre-loading it to retain the twist.
(From dim memories, correct me if I'm wrong.)
Clay.
