Of course it's the 6000 hp that's moving the train. You can get
that 6000 hp any way you want. The train uses 35,014 ft. lbs. at
900 RPM. But you could also get it with 3,500 ft. lbs. at 9,000
RPM, or with 350 ft. lbs. at 90,000 RPM. Either way it's gobs of
power.
BTW, what's the most powerful engine made in the world? Is it the
nuclear reactor on aircraft carriers? It takes a LOT of power to
push a ship the size of the empire state building through the
ocean at speeds fast enough that you could waterski off the back.
Scot Zediker wrote:
>
> --- "Allendorfer, Peter" <Peter@regionofdoom.com>
> wrote:
> > Take, for example a Diesel Electric Locomotive.
> > Say, the EMD SD-90MAC.
> >
> > The prime-mover (Diesel Engine) is a V-16 2-stroke
> > Direct Injection
> > Turbo-Diesel. It's RPM range is from 300-900. It
> > generates 6000hp at
> > 900rpm. Given the formula from an earlier e-mail,
> > that would be 35013.3c
> > lb/ft of torque. No wonder the railroads can pull
> > mile long 8000 ton trains
> > at speeds up to 79 mph (FRA speed limit on all Class
> > 1 Railraods) with only
> > 12-24 drive wheels. And steel on steel at that.
>
> I remember some years ago Car & Driver did a "track
> test" of a diesel-electric locomotive. One thing they
> said about the engine's output was that it had as much
> torque as 65 Corvette ZR1's.
>
> > p.s. I have several expensive hobbies, and Model
> > Railraods are one of them.
> > :)
>
> I used to engage in this hobby myself. I'd like to
> get back into it one of these days, when I have more
> time and money...
>
> Scot
> Do You Yahoo!?
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