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| Re: Brake Valve pr0n Re: LIRR MP-54 #1149 and its ME-23 brake valve (484997) | |||
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Re: Brake Valve pr0n Re: LIRR MP-54 #1149 and its ME-23 brake valve |
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Posted by Bill West on Mon Sep 3 01:45:28 2007, in response to Re: Brake Valve pr0n Re: LIRR MP-54 #1149 and its ME-23 brake valve, posted by SelkirkTMO on Sun Sep 2 22:08:42 2007. Thanks for the research, BIE!I would take the old “Audel’s New Electric Library” with a bit of salt but the 1930/62 edition purports to describe SIRT’s cars and shows an ME- looking valve with internal detent. The file picture included has a fifth contact but it just fitted in, the electric box is not as tall as the MP-54’s here, there is no room for the section of red shaft. The significant tidbit is that here the fifth contact was grounded by the detent/stop plate in emergency. The wire was #12 and the legend says “to control line relay short circuiting train line wire” I took this to mean it shorted out the coils of the power contactors as an emergency measure, if some how the propulsion controls had screwed up it would force them off (blow the control fuse, ground any accidental shorts from hot wires). Also, any thoughts about what the valve section on the left of that taller than usual pipe bracket section is? Safety control? Bill |
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