[amsat-bb] Re: Automobile Noise
Gordon JC Pearce
gordonjcp at gjcp.net
Thu Apr 16 04:15:22 PDT 2009
Edward Cole wrote:
> I had a 1978 International Scout Traveler (think
> diesel powered 2-door explorer). It used a
> 6-cylinder Nisan diesel engine with standard
> mechanical rack injector. I had such a low RF
> noise level that I heard all the noisy vehicles
> passing by on the road.
A couple of years ago, I had an '88 Citroën CX 25DTR turbodiesel, which
was so (electrically) quiet I could pick out individual interference
sources in cars parked beside me. Mechanically it sounded like a
Caterpillar D9, though - not the smoothest diesel I've ever had but then
300lb/ft at 1800rpm with 16psi boost will do that.
I had it running electricall silent once, when the main power fuse blew
disconnecting everything except the starter motor feed - no electrics at
all. All I did was remove the brass slug from the stop solenoid valve,
tickle the starter lead (there's a handy plug and socket beside the
battery for doing this) and ran about 40 miles with no electrics. Lack
of brake lights was a bit scary, but the roads were quiet ;-)
Gordon
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