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Re: Train Physics Problem

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On 11/03/2015 01:53 PM, Fabian Russell wrote:
> On Tue, 03 Nov 2015 13:41:47 -0500, benj wrote:
>
>>
>> OF course all you need to do is install titanium wheels and you much
>> reduce the problem.
>>
>
> The efficiency of the train depends entirely on the very low ROLLING
> FRICTION of steel wheels on steel rail.  Rolling friction is caused
> by the actual physical deformation of the wheel and rail material.
>
> Is titanium just as hard, or harder, than the steel alloy currently
> used?  If not, then titanium wheels would only produce more rolling
> friction.

Actually if you read some of the literature on the internet from people 
who sell train rails and wheels, you see that it's not that simple. 
(nothing in life is ever as simple as the people on the INTERNET say)

What they talk about a lot is the relationship between the hardness and 
wear. They want the wheels to wear and not the rails (I presume because 
it's easier and cheaper to replace wheels rather than rails). So there 
is this highly complex economic relationship between ALL the factors 
including wheel inertia, wheel rolling losses, metal wear and probably 
much more.

You know, all the things that Boinker never thinks about when he's using 
his "logic" to "prove" some minor point and being completely wrong about 
it.

When simple mindless physics is tried to be applied to some technology 
that has been the subject of economic trial an error for decades if not 
centuries, the answer you get is almost certain to be wrong.

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Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 02:05 +0000
  Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 02:31 +0000
    Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 02:38 +0000
    Re: Train Physics Problem gillyshin <spectrum8@sincity.info> - 2015-11-03 04:38 +0000
      Re: Train Physics Problem gilber34 <fafa@invalid.com> - 2015-11-02 22:58 -0600
        Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 05:22 +0000
  Re: Train Physics Problem Odd Bodkin <bodkinodd@gmail.com> - 2015-11-03 08:38 -0600
    Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 18:19 +0000
      Re: Train Physics Problem Odd Bodkin <bodkinodd@gmail.com> - 2015-11-03 15:00 -0600
        Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 21:22 +0000
          Re: Train Physics Problem Odd Bodkin <bodkinodd@gmail.com> - 2015-11-03 16:55 -0600
            Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 23:19 +0000
        Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 21:31 +0000
          Re: Train Physics Problem Odd Bodkin <bodkinodd@gmail.com> - 2015-11-03 17:17 -0600
    Re: Train Physics Problem benj <none@gmail.com> - 2015-11-03 13:41 -0500
      Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 18:53 +0000
        Re: Train Physics Problem benj <none@gmail.com> - 2015-11-04 18:08 -0500
          Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-04 23:33 +0000
      Re: Train Physics Problem Odd Bodkin <bodkinodd@gmail.com> - 2015-11-03 15:10 -0600
        Re: Train Physics Problem Fabian Russell <root@localhost.localdomain> - 2015-11-03 21:48 +0000
          Re: Train Physics Problem benj <nobody@gmail.com> - 2015-11-04 02:45 -0500
  Re: Train Physics Problem "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-11-03 09:19 -0800
    Re: Train Physics Problem "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-11-04 15:15 -0800

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