tag:blogger.com,1999:blog-6164816428606409978.post4405008286537011610..comments2023-12-03T05:50:07.490+00:00Comments on Electric Edwardians: Lancashire & Yorkshire Railway Electric Locomotive Number 1, 1912Unknownnoreply@blogger.comBlogger5125tag:blogger.com,1999:blog-6164816428606409978.post-64499525260282283282019-10-11T14:00:59.452+01:002019-10-11T14:00:59.452+01:00There were some early-20th century electric locomo...There were some early-20th century electric locomotives in the US with wheels driven by a jackshaft and side-rods, such as the DD1 class (1911) on the Pennsylvania Railroad. This method of transmission was chosen becauseat that time, electric motors of the power required were too large to be mounted on the axles. (See photo on the Wikipedia page for "PRR DD1", showing a giant motor in the body of the locomotive).Timhttps://www.blogger.com/profile/14865503170641058013noreply@blogger.comtag:blogger.com,1999:blog-6164816428606409978.post-85290228925985780122016-04-06T20:32:09.787+01:002016-04-06T20:32:09.787+01:00> There was one, I don't remember the numbe...> There was one, I don't remember the number, that was a D or an E with one single motor with a diameter of 3.36meter <<br /><br />You may be thinking about this one: the hungarian V40 (1D1, express/universal) and V60 (E, six-axle heavy freight) electric locomotives had a single very large 18-ton, 2500/3500hp polyphase AC traction motor. Over 3 meters in dia., it was so large it barely fit in the UIC gauge profile. There was also a 12-ton synchronous rotary phase converter device onboard, which mangled the single-wire 16kV/50Hz AC catenary feed into ~1200V polyphase AC for the big motor. The wheels were rod-driven. About three dozen of them served between 1932 and 1967. Only one V40 and one V60 survived as static displays.Tamas Feherhttp://en.wikipedia.org/wiki/Kalman_Kandonoreply@blogger.comtag:blogger.com,1999:blog-6164816428606409978.post-87742823945261235542016-04-06T20:22:03.015+01:002016-04-06T20:22:03.015+01:00There were over 1000 rod-driven electric locomotiv...There were over 1000 rod-driven electric locomotives worldwide, many of them designed by the hungarian engineer Kalman Kando. Italy alone used over 700 of them, on their double-catenary, three-phase 3kV/16.7Hz traction system between 1902-1976. In fact, rod drive was mandatory for almost all AC-motor driven electric locomotives in the pre-GTO/IGBT era! That's because fine RPM control was not possible without solid state devices and the axle with the worn (smaller dia.) wheels wouldn't pull at all. The rods forced all axles to turn uniformly, so spinout was prevented.Tamas Feherhttp://en.wikipedia.org/wiki/Kalman_Kandonoreply@blogger.comtag:blogger.com,1999:blog-6164816428606409978.post-70453708294812286242015-06-01T06:03:45.892+01:002015-06-01T06:03:45.892+01:00I disagree with Anonymous about the wheel notation...I disagree with Anonymous about the wheel notation. In my experience, siderod-driven electric or internal combustion locomotives are often referred to using the Whyte notation i.e. (in this case) 2-4-2. S/he has also neglected to mention probably the most famous of all siderod electrics, namely the Swiss "Krokodils".Anonymoushttps://www.blogger.com/profile/00894215168290111992noreply@blogger.comtag:blogger.com,1999:blog-6164816428606409978.post-75335932709754967842014-01-12T06:11:31.516+00:002014-01-12T06:11:31.516+00:00Electric locomotives with coupling rods: The Deuts...Electric locomotives with coupling rods: The Deutsche Reichsbahn used a lot of them in the 20s: E32, E36, E50, E52, E60, E63, E75, E77, E91, to name a few, with drives from simple C and C1 of switchers via B'-B's to heavy C'-C's. There was one, I don't remember the number, that was a D or an E with one single motor with a diameter of 3.36meter. For your info: a figure is a non-driven axle, a letter a driven one, an apostrophe means it is in a separate block, and a small o means every axle has its own motor. So a 2-B'-B'-2 like the E52 is translated as 4-4-4-4 with one motor driving each block of 2 driven axles. A Co'-Co' is a 6-6 with every axles driven by its own motor. This locomotive in the picture is a 1-B-1. <br />Ed.Anonymousnoreply@blogger.com