CTK246 Posted June 16, 2011 Share #1 Posted June 16, 2011 Why do trains make a loud exhaustion sound when they arrive at the terminal? Link to comment Share on other sites More sharing options...
bstar1 Posted June 16, 2011 Share #2 Posted June 16, 2011 Maybe because of break release. Link to comment Share on other sites More sharing options...
TwoTimer Posted June 16, 2011 Share #3 Posted June 16, 2011 Why do trains make a loud exhaustion sound when they arrive at the terminal? Train brakes going into emergency so they can be recharged again at the other end for movement in the opposite direction. Also to change operators at relay locations (Utica, Continental, 179, Parkchester, Church, Chambers) Notable places this does not happen - Euclid where the arriving crew does the relay for N/B service (unless train is a layup and said crew isn't responsible for taking it to Pitkin or wherever) and crew change occurs on the n/b end (train dumps in the relay to change direction and again on the n/b plat to change crews), and at Continental where arriving and departing trains do not have to "dump" the train to change operators (R46 only, train dumps in the relay to change directions). R46 only has to be dumped to change direction. train crews do either end of the relay so one way or another the train won't dump either. Link to comment Share on other sites More sharing options...
INDman Posted June 16, 2011 Share #4 Posted June 16, 2011 More specificly, it's a test of the piolt valve (deadman). Once the T/O stops the train, the MC handle is released while the brake valve or MC is in a position other then full service. If for what ever reason the handle is released but the train does not go into emergency, that train must be taken out of service. Link to comment Share on other sites More sharing options...
Abba Posted June 16, 2011 Share #5 Posted June 16, 2011 This usually dosent happen at Bowling green and Brooklyn Bridge I noticed. Link to comment Share on other sites More sharing options...
mtattrain Posted June 16, 2011 Share #6 Posted June 16, 2011 This usually dosent happen at Bowling green and Brooklyn Bridge I noticed. But again, trains continue in the same direction; similar to a streetcar loop. Link to comment Share on other sites More sharing options...
TwoTimer Posted June 16, 2011 Share #7 Posted June 16, 2011 More specificly, it's a test of the piolt valve (deadman). Once the T/O stops the train, the MC handle is released while the brake valve or MC is in a position other then full service. If for what ever reason the handle is released but the train does not go into emergency, that train must be taken out of service. Any type of emergency application will result in this, not just a pilot valve test. By rule every time the train is put in emergency it must be via the pilot valve (unless an actual emergency), but it doesn't mean every T/O does it that way. Link to comment Share on other sites More sharing options...
INDman Posted June 16, 2011 Share #8 Posted June 16, 2011 Any type of emergency application will result in this, not just a pilot valve test. By rule every time the train is put in emergency it must be via the pilot valve (unless an actual emergency), but it doesn't mean every T/O does it that way. Yes, I am well aware of that... Link to comment Share on other sites More sharing options...
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