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November 15, 2005Featured article candidateNot promoted

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"sometimes simply strung, sometimes on a catenary.[2"Edit

This line seems wrong. A catenary is the shape in which a uniform chain or flexible wire hangs between points of support. So a "simply strung" copper wire at rest will closely approximate a catenary, unless the wire or wires are very thick and stiff. Of course it will be distorted by contact with the trolley and by wind.

Technically, you are correct. But in tramway overhead consisting of a single wire (the trolley/contact wire), the mass per unit length and the tension in the wire are such that it does not really appear to have any significant drop between supports. When the trolley/contact wire is supported from another wire (sometimes on tramways but almost always on railways), that upper wire does have the form of a visible catenary. In that case, the word "catenary" is applied to the supporting wire, and the whole arrangement is referred to as "catenary overhead" or, sometimes, just "catenary".

StraßenbahnEdit

"Straßenbahn" redirects here. But you don't find the word Straßenbahn in the header or in the introduction part. Instead of putting it (somehow) there, I will add it to the photo's text, where it fits very well. --Schwab7000 (talk) 14:16, 2 August 2017 (UTC)

External links modifiedEdit

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Cheers.—InternetArchiveBot (Report bug) 02:24, 13 January 2018 (UTC)

Orphaned references in TramEdit

I check pages listed in Category:Pages with incorrect ref formatting to try to fix reference errors. One of the things I do is look for content for orphaned references in wikilinked articles. I have found content for some of Tram's orphans, the problem is that I found more than one version. I can't determine which (if any) is correct for this article, so I am asking for a sentient editor to look it over and copy the correct ref content into this article.

Reference named "Bellis":

I apologize if any of the above are effectively identical; I am just a simple computer program, so I can't determine whether minor differences are significant or not. AnomieBOT 17:03, 24 January 2018 (UTC)

Steel vs Rubber quoteEdit

I'm reviving an old discussion in Talk:Tram/Archive_3#Steel_vs_Rubber_quote. I have edited the advantages section, stating that: "Vehicles run more efficiently compared to similar vehicles that use rubber tyres, since the rolling resistance of steel is lower.". However, I have read the mentioned discussion and I'm no longer sure of this statement. Anyway, it would be the real motive why trams should be more efficient than trolleybuses. That's why I'm leaving the edition. I'd like you to review this.

--Niksfish (talk) 05:35, 4 February 2019 (UTC)

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