On 2013-08-12, jim "sjedgingN0Sp"@m wrote:


Ignoramus12972 wrote:

On 2013-08-11, Larry Jaques wrote:
Yeah, those are fun, aren't they? We have Pottsville up here. Back in
LoCal, we had the Antique Steam and Gas Museum. Same same. Parades

Yes, great all around. But I have a question. Those flat belts, if
they are of considerable length, are folded into "figure 8". I wonder
why, to avoid thel flopping around?

Do you mean why are they given a twist so that
they are shaped like a Mobius strip.

The reason is it makes the belt last longer because the belt
contacts the pulleys on both sides.

That's a smart idea, but this is not what I saw. I saw a figure 8.

i