Glen, An old carman showed me how to move a car by myself at least a
few feet. By grabbing hold of the flange right where the wheel is
sitting on the rail and pulling straight upward the car will start to
move. Works easier on empties of course. They also showed us how to
get a jam (two knuckles closed together and not coupled)opened so the
track can be coupled up. Many of these old Indian tricks saved a
trainman a lot of steps and time. Archie
On Nov 15, 2009, at 1:52 AM, GLEN HAUG wrote:
>
> This isn't related to a car rolling on its own, but I was on a B&B
> gang that had to move a material gon a few fit on a spur track, and
> 5 of us were able to move it (by pushing and using pinch bars) on
> level track with the brakes released. It was then that I realized
> it doesn't take much effort to get a freight car to roll.
>
>
>
> Glen Haug
>
>
>
> To: CBQ@yahoogroups.com
> From: js08ws62@sbcglobal.net
> Date: Sun, 15 Nov 2009 03:47:26 +0000
> Subject: [CBQ] Railroad Freight Cars Moving on Their Own
>
>
>
>
>
> It seems to me that everyone on this list is here because we admire,
> love, and are generally curious about all the aspects of
> railroading. So, this question, though off-topic, might be of
> general interest to all, and of specific interest to those who know
> physics.
>
> Railroading began and continues to be a popular and effective way of
> moving freight because a rolling steel wheel on a steel rail is very
> efficient. I have seen reports that an 8- wheel freight car rests on
> less than 2 square inches. And, it is steel on steel - little
> friction. Moreover, I am sure all of us have witnessed the very long
> distances that a very slow moving freight car can roll on its own.
> It is phenomenal. So
> here's a theoretical question:
>
> If an ordinary, empty, boxcar resting on 2 roller-bearing 4-wheel
> trucks was given a 50 mile an hour push on a perfectly level,
> perfectly straight railroad track on a windless day, how far would
> it go before stopping on its own?
>
> It also would be interesting to hear some of your stories known from
> personal experience regarding long distances rolled by railroad cars
> moving on their own. Another phenomenon worthy of comment would be
> just how silently they roll. I'm sure many have stories about that,
> too.
>
>
>
>
>
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