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On Tue, 2004-04-20 at 09:07, Brian MacLeod wrote:
> Yes, they save a lot on maintenance on transmissions and stuff, but one
> of the larger reasons diesel locomotives drive generators which drive
> electric motors is because it allows the engineers a hell of a lot more
> control when they use more than one loco. It's much easier with
> electricity to regulate your speed/power then trying to get a bunch of
> diesel engines "synchronized."
>
> bnm
>
>
> > -----Original Message-----
> > From: ale-bounces at ale.org [<a rel="nofollow" href="mailto:ale-bounces";>mailto:ale-bounces</a> at ale.org] On
> > Behalf Of Kevin Krumwiede
> > Sent: Monday, April 19, 2004 11:53 PM
> > To: Atlanta Linux Enthusiasts
> > Subject: Re: [ale] OT geek motorcycle?
> >
> > On Sun, 18 Apr 2004 17:10:29 -0400
> > Danny Cox <danscox at mindspring.com> wrote:
> >
> > > The main problem with electrics, as always is the throttle, or
> > > more
> > > precisely, the lack thereof. The mini-bike had an on/off
> > switch. If
> > > you use a rheostat, you lose the energy as heat, and the batteries
> > > wear down as if you were full throttle all the time.
> >
> > I wonder how diesel locomotives do it. Their engines drive
> > generators; electric motors drive the wheels. Massive
> > transmissions and drive shafts are less efficient and harder
> > to maintain, I guess.
> >
> > IIRC, an electric motor's torque varies with current, and its
> > speed varies with voltage. So, what about using a
> > transformer tapped for various voltages? It'd be like an
> > electric transmission.
> >
> > Krum
> > _______________________________________________
> > Ale mailing list
> > Ale at ale.org
> > <a rel="nofollow" href="http://www.ale.org/mailman/listinfo/ale";>http://www.ale.org/mailman/listinfo/ale</a>
> >
> >
> _______________________________________________
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</pre>
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