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| Re: What is this supposed to be? (1332647) | |||
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Re: What is this supposed to be? |
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Posted by JOE @ NYCMTS - NYCTMG on Wed Jan 7 18:24:50 2015, in response to Re: What is this supposed to be?, posted by Express Rider on Wed Jan 7 15:48:45 2015. Hello Express RiderThe Manual Door Hi-V Motor Cars were "modified" with Door control motorman indication circuits...so that they could be line-connected with the circuit on the MUDC converted Hi-V cars which had (like Low-V's, and SMEE's) door indication control circuits. Also called Pilot Motors. In PRE-MUDC class rolling stock subway car days (at least on the IRT), the cars beginning with the original 1903-4 IRT COMPOSITE cars and 1904-5 steel Gibbs cars, and 1906 DECK ROOF cars, all 3 types were built WITHOUT center doors, and those cars were ALL hand-lever-control door cars. These cars had large levers located along each side of the end STORM door for conductors to operate the end vestibule doors on each side of his conductor position standing between each pair of cars. Just like manually operated gates on EL GATE cars on the El's. And prior to the motorman in-cab door indication circuit signal light (for all doors closed) - a series of ropes thru and between the cars, and clapper-equipped small gong-bells located in the vestibule ceilings of each car, were rung by each conductor in succession from rear to front car, on those earlier IRT subway trains of all manually-lever operated door cars, to notify the motorman in the first car (hearing his car's "bell" as the last bell being rung) that ALL manual doors were closed - and he could proceed out of the station. Just like the similar procedure on all elevated GATE CARS of the IRT system. ALL IRT subway cars retained the unused ropes and bells long after the MUDC door control system was installed and predominated the system, including the last surviving LOW-V CARS into 1964-4 (and Steinways up to late 1969 on Bronx 3rd Ave EL) ! The center doors were manually operated via a small lever and rod mounted below the center of each of the two end-face-windows at the car ends. These later installed center doors, cut into all Hi-V Composites, Gibbs and Deck Roof Cars, and as built new on Hedley standard body Hi-V cars, were remotely operated via mechanical rod-linkages connected to an air operated door motor. The 1910-16 "approx." built Standard Body Hedley Hi-V Cars, the FIRST steel IRT cars to be built with center doors, and many of the earliest built-with-center-doors Low-V Cars, also had manual door lever controls like their earlier breathern. Those earliest Low-V's were lated converted to MUDC, and all newer post 1920 built Low-V's were equipped as new with the MUDC feature. Most of the Hedley standard body ("approx." 1910-20 era) Hi-V Motor cars and their Hi-V Trailer cars, were made MUDC in the 1920's. Many Gibbs cars were years later made MUDC along with newly designed end vestibule side doors installed, and brand new standard sliding-into-pockets end storm doors with large storm door window similar to those on Deck Roof and later IRT cars. A small portion of the Hedley standard body and Gibbs Hi-V cars retained their manual doors for the reasons below explained. And ALL the 50 built Deck Roof cars, NEVER being converted to MUDC, retained their manual doors until their very early 1960's scrapping.. Because the earliest IRT subway routes in the approx. 1904 thru late 1940's - early 1950's periods, had local station platforms of 5 to 6 cars long, longer rush hour operated local trains of 6, 7, 8 cars had some head end and tail end cars out of platform in the tunnel wall at stations. So a normal local would be 4 or 5 cars off peak, and say, 6 or 7 cars in rush hour. By having a Manual Door car at each end of an MUDC consist, with the MUDC cars circuit "split" at middle of train, a conductor at each end of the train, one standing between the first two cars and one standing between the last 2 cars of the 6 or 7 car local train, could keep the some or all doors closed on the manual doors operated "point and tail" "modified" motor cars if either car was fully or partially in the non-platform tunnel area at local stations. On one side, the conductor had hand lever controls on one car, and MUDC door control buttons on the car on his opposite side. I hope all above details and explains the basic principals and history of it. regards - Joe F |
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