On Sun, 2 Sep 2007 20:12:01 +0100, "Paul Scott"
wrote:

I've wondered if the escalator components wear out at all differently on
left and right parts, due to the unbalanced loading?

Yes they do in much the same way as if escalators are designed to run up
and down but are typically only used in one direction.
--
Paul C


Admits to working for London Underground!