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Re: (erielack) Duplexes, Triplexes, Articulateds and so on -- OT?
The Beyer-Garratt locomotive was invented in 1907 per wikipedia at:
en.wikipedia.org/wiki/Garratt. Read the parts o advantages and
disadvantages.
I think the main advantages of low axle loading and flexibility were not
required in the USA and the two full pressure flexible steam pipes and
no compounding offset any advantages.
Adn of course when they bcame popular elsewwhere, in the USA "they
weren't invented here".
bob gillis
Paul Brezicki wrote:
>The Beyer-Garratt design was especially suited to narrow gauge lines with their characteristic sharp curves, steep grades and axle-loading restrictions. This descibes most African RR's which were generally 3'6" or meter gauge. The design permitted larger locomotives than would have been possible with conventional configurations. For example, the SAR Class GL 4-8-2+2-8-4 weighed 214 tons but the max axle load was only 18.5 tons. The other factor was the persistence of steam power on that continent; by the time the B-G locomotive was developed, US RR's were pursuing diesel power and NG had largely disappeared. The B-G's were also used by East African Railways (Kenya) and possibly in Rhodesia (now Zimbabwe).
>
>While we're on the subject of steam, I forgot to post this question yesterday: did D&H also have a unique name for it's 4-8-4's? "Champlain", perhaps?
>
>Paul B
>
>From: "John C. Strole" <strole.jc_@_verizon.net>
>Subject: (erielack) Duplexes, Triplexes, Articulateds and so on -- OT?
>
>At the risk of being seriously off-topic, were any duplexes of the
>odd-looking Garrett configuration ever considered by US railroads? They did
>seem successfull in South Africa, but I don't know what the conditions were
>compared with US requirements.
>
>
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