Russ Blakeman wrote:
>
> Eric Smith wrote:
>
> > Christian Fandt <cfandt_at_netsync.net> wrote:
> > > You've probably seen fuel tanker trucks with a metal chain
> > > dragging. It too was used as a static drain for obvious reasons ;)
> >
> > I only noticed one of these for the first time about a month ago. I
> > was wondering why they were dragging a chain; it was throwing lots of
> > sparks. Didn't seem like a great idea to me, but what do I know?
>
> It's not since there shouldn't be sparks as the chain or strap is
> supposed to be non-ferrous, ie brass or copper. Sure it wears out but no
> sparks. Just a good ground to earth to drain the buildup from the frame.
Yes, throwing sparks does sort of defeat the purpose. Never saw one
do that, admittedly the only place I ever paid attention was the
flight-line back when I did airplanes for a living.
--
Ward Griffiths <mailto:gram_at_cnct.com> <http://www.cnct.com/home/gram/>
WARNING: The Attorney General has determined that Alcohol, Tobacco,
and Firearms can be hazardous to your health -- and get away with it.
Received on Sat Dec 05 1998 - 08:27:44 GMT