Electrical Engineering - Re: "European" catenary on the North-East Corridor (USA)

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Re: "European" catenary on the North-East Corridor (USA)

Hans-Joachim Zierke

2008-03-28, 5:25 pm

Adam H. Kerman schrieb:

> Now I'm particularly confused. Of course I expected that the weights
> hung would be chosen based on observation of conditions, but once the
> observations are made, the counterweight is chosen.

If you have 10 standardized concrete blocks already hanging there, why
do you want to produce a special one and replace them? Lots of specially
produced weights are certainly more expensive than standard weights.

> When is a variable amount of weight used under daily operating conditions?

Never.

Hans-Joachim

--
[If the] Communists succeed in controlling all of China, or some equivalent
far-reaching development takes place, we should be prepared to treat Tibet
as independent to all intents and purposes.
Loy Henderson, USA ambassador to India, State Department Memo, 12 April 1949

Adam H. Kerman

2008-03-28, 5:25 pm

Hans-Joachim Zierke <Usenetspam013@Zierke.com> wrote:
>Adam H. Kerman schrieb:

[color=darkred]
>If you have 10 standardized concrete blocks already hanging there, why
>do you want to produce a special one and replace them? Lots of specially
>produced weights are certainly more expensive than standard weights.

Ok; that makes sense.

[color=darkred]
>Never.

That's what I thought. So there's no such thing as a "variable weight
system" for catenary tensioning. You choose the appropriate amount of
counterweight and hang it up.

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