I was looking for my carefully misplaced article that was in Sport Aviation that
suggested the 1 meg resister, as part of an overall fuel system discussion. .
.and you're right about the shopping time to locate the 1 meg resister. Not
overy common.
Cleve
On Thu, 19 Dec 2002, bizzarro@easynet.co.uk wrote:
>
> I think that the 1meg ohm resistor is really only necessary when you are
> working with high voltages with appreciable current. It is used to prevent you
> from giving yourself a nasty shock from mains supplies whilst working on, say
> computer equipment etc. There is only 12v on the plane (unless you play with
> the HT system whilst the engine is running, but that would be silly:-)
>
> Ed
>
> Turned the engine over last week on its starter. (Trust me, it is a big step
> for us)!!!!!
>
>
> Quoting Fred Fillinger <fillinger@ameritech.net>:
>
> > clevelee@cswebmail.com wrote:
> > >
> > > ...I've installed a 16 ga ground wire from the filler
> > > aluminum cap neck (had to cut out the filler neck to allow room for the
> > terminal
> > > secured to a flat made in the threads of the aluminum part) and have
> > installed
> > > the 1 watt 1 meg ohm resister that is recommended en-rout to the engine
> > ground.
> >
> > To save shopping time, a 1/2-watt resistor is much more common and
> > sufficient. The average static spark event we experience is just
> > barely enough to ignite fuel vapor, and equates to a couple watts for
> > a few milliseconds. Converted to heat, a 1/8-watt resistor would
> > barely notice it, nor is #16 wire similarly called for - dealing in
> > microamps here, else the static shocks that we feel would be lethal!
> >
> > Although it may be harmless, does anyone have an authoritative source
> > stating this resistor is beneficial? The only such sources I can find
> > say that the resistance of electrical bonding (here from the filler
> > cap thru like the exhaust pipe) to the fuel source should be 20K or
> > less. Why do we want to increase this to 1 meg??
> >
> > Regards,
> > Fred F.
> > The Europa Club website is at <<a
href="http://mail.cswebmail.com/jump/http://www.europaclub.org.uk>">http://www.europaclub.org.uk>;
> >
>
>
>
>
> ---------------------------------------------------
> This mail sent through <a
href="http://mail.cswebmail.com/jump/http://www.easynetdial.co.uk";>http://www.easynetdial.co.uk
> The Europa Club website is at <<a
href="http://mail.cswebmail.com/jump/http://www.europaclub.org.uk>">http://www.europaclub.org.uk>;
The ALL NEW CS2000 from CompuServe
Better! Faster! More Powerful!
250 FREE hours! Sign-on Now!
http://www.compuserve.com/trycsrv/cs2000/webmail/
|