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| Re: Question re: BUs and R1-9s on same consist (255457) | |||
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Re: Question re: BUs and R1-9s on same consist |
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Posted by randyo on Fri May 19 16:36:44 2006, in response to Re: Question re: BUs and R1-9s on same consist, posted by SelkirkTMO on Fri May 19 03:33:22 2006. The couplers on the prewar IRT eguipment were "J" series. They were not fully automatic as the H series but only semi automatic in that they contained the air connections within the drawhead. J couplers, however could not be coupled to H couplers without damaging the tappets on the H coupler due to the air connections being at different angles. The air connections on a J drawhead were at 90 degree angles to the front of the car whereas the air connections on a H drawhead are at 45 degrees. Also H drawheads had tappets on the air connections which automatically opened and closed when cuts and adds were made. J drawheads had open gasket sockets which required that air connections between cars had to be manually opened and closed for cuts and adds. Also the actual coupler locks on H drawheads were pneumatically operated from cutting valves inside the M/M's cab or under the car whereas the J couplers had to be manually unlocked for cuts. Both couplers locked automatically upon coupling. To my knowledge, the museum Low-Vs have had standard H drawheads installed in order to provide ease of coupling to conventional equipment in the event they would have to be towed. Of course with the newer equipment having Ohio Brass type drawheads, an adapter would be required in such a case anyhow. |
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