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| Re: Of brake stands and ''dramatic braking'' (467766) | |
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| (468159) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by BIE on Sun Jul 29 17:36:58 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by RonInBayside on Sun Jul 29 16:57:35 2007. The current is GENERATED by the unit on the end of the axle and the other parts of the system take power directly from the battery. Any switches in the circuit are tamper proof. |
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| (468160) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by RonInBayside on Sun Jul 29 17:38:32 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by BIE on Sun Jul 29 17:36:58 2007. Fine, but then how do you explain the speedometer display in the cab showing zero while the train is moving? |
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| (468162) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Train Dude on Sun Jul 29 17:40:04 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Mr Mabstoa on Sun Jul 29 16:45:03 2007. Diesel Locos and Subway cars/electric MUs are totally different in that respect. |
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| (468175) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Train Dude on Sun Jul 29 17:48:08 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by RonInBayside on Sun Jul 29 17:38:32 2007. On the R-62A, there is no connection to the axle or wheel or any other rotating part. The pick-up for the speedometer is dopplar. There is a feature where if there is no speed indicated the speedometer goes dark after 15 seconds or so. However, after reading the original question, I'm not sure that is what he was referring to. If the sped indicator displays "00" and is not dark, then it is clearly a malfunction. |
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| (468176) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by RonInBayside on Sun Jul 29 17:48:34 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Mr Mabstoa on Sun Jul 29 16:45:03 2007. That's because on a freight train the locomotive's wheels are the only ones affected by dynamic braking. There is a danger if heavily loaded freight cars overwhelming the loco so air brakes are needed above a safety threshold.Dynamic braking on a push-pull passenger consist isn't favored by passengers because the cars tend to jostle each other a lot. Friction braking produces smoother deceleration for passenger comfort. On an MU consist, obviously, the dynamic brakes are effective in all cars. |
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| (468177) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Mr Mabstoa on Sun Jul 29 17:49:27 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Train Dude on Sun Jul 29 17:40:04 2007. I see, freight cars have no dynamic and barely have good air brakes! |
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| (468179) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by RonInBayside on Sun Jul 29 17:50:33 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Train Dude on Sun Jul 29 17:48:08 2007. Thank you.For those of you not familiar, there is a good definition of doppler here: http://en.wikipedia.org/wiki/Doppler_effect |
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| (468186) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Railman718 on Sun Jul 29 17:53:58 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Train Dude on Sun Jul 29 17:48:08 2007. Good Stuff Train Dude thanks..Look forward to "meeting" you again sometime, that is if im around Pitkin Yard since i will be working out of the South.. |
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| (468188) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by BIE on Sun Jul 29 17:56:32 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by RonInBayside on Sun Jul 29 17:50:33 2007. I am referring to the practice utilized on railroad diesels. |
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| (468189) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by BIE on Sun Jul 29 17:56:55 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Train Dude on Sun Jul 29 17:48:08 2007. I am referring to the practice utilized on railroad diesels. |
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| (468191) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Train Dude on Sun Jul 29 17:58:30 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Railman718 on Sun Jul 29 17:53:58 2007. e-mail me |
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| (468195) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Railman718 on Sun Jul 29 18:11:20 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Train Dude on Sun Jul 29 17:58:30 2007. Done... |
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| (468197) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by BIE on Sun Jul 29 18:13:25 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Mr Mabstoa on Sun Jul 29 17:49:27 2007. Mr. MabstoaE-Mail. |
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| (468211) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Zman179 on Sun Jul 29 18:37:28 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Train Dude on Sun Jul 29 17:48:08 2007. On the B Division equipment, only the 44's speedometers go dark. All the others remain illuminated at all times, even when that particular cab is not in use. |
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| (468213) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Train Dude on Sun Jul 29 18:43:35 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Zman179 on Sun Jul 29 18:37:28 2007. thanks. |
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| (468217) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Zman179 on Sun Jul 29 18:47:12 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Train Dude on Sun Jul 29 18:43:35 2007. Then again, you probably knew that already. You only follow this stuff for a living. :) |
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| (468268) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by SelkirkTMO on Sun Jul 29 20:21:20 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Mr Mabstoa on Sun Jul 29 16:37:34 2007. Heh. FULLY understand! Lemme put it THIS way ... I'm not a rubber tire type myself, but we ALL need to "increase the peace" ... Just like the wiglets you work for, there's a LOT of folks here who WOULD get hired as Teeyay manglement. Don't FEED them! :)WISDOM exists in whether to post or not. TOO often ... not. Word. |
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| (468274) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by SelkirkTMO on Sun Jul 29 20:31:16 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Railman718 on Sun Jul 29 16:59:19 2007. Phucking whiner! :) |
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| (468293) | |
Re: Of brake stands and piping |
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Posted by SelkirkTMO on Sun Jul 29 21:01:08 2007, in response to Re: Of brake stands and piping, posted by Railman718 on Sun Jul 29 10:56:44 2007. Heh. Just so's ya know, BLE-NIMX is another of us "bad attitude" type homies. Heh. LISTEN to him! :) |
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| (468298) | |
Re: Of brake stands and piping |
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Posted by BLE-NIMX on Sun Jul 29 21:16:13 2007, in response to Re: Of brake stands and piping, posted by SelkirkTMO on Sun Jul 29 21:01:08 2007. If he cooked a Corona train all by himself, he don't need our "advice" |
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| (468321) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by BLE-NIMX on Sun Jul 29 22:15:21 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by RonInBayside on Sun Jul 29 17:48:34 2007. Dynamic braking on a push-pull passenger consist isn't favored by passengers because the cars tend to jostle each other a lot. Friction braking produces smoother deceleration for passenger comfort.You conflicted yourself in that statement. Since passengers don't actually ride in the locomotive, they don't experience dynamic braking and thus can't favor anything. They ONLY ride in the cars and since in a push-pull have traction motors, they only run on friction braking. |
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| (468358) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Broadway Lion on Sun Jul 29 22:57:59 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by BLE-NIMX on Sun Jul 29 22:15:21 2007. No.If the locomotive brakes are used alone, be they dynamic or friction, there would be some run-in of slack which would be jostling to the the following cars. EXCEPT that passenger equipment uses tight-fit couplers that do not allow for run-in or stretching of the consist and so would not transmit these forces to the passengers. ROAR |
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| (468378) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by RonInBayside on Sun Jul 29 23:47:26 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Broadway Lion on Sun Jul 29 22:57:59 2007. If that were true, then passenger railroads would use friction braking less. In fact, even with tight couplers, forces ARE transmitted to the cabins. Amtrak crews have told me that this is the reason friction braking is used. |
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| (468395) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Broadway Lion on Mon Jul 30 00:12:27 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by RonInBayside on Sun Jul 29 23:47:26 2007. Dutch will have to explain it to us, but the train brakes are used for better train control.ROAR |
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| (468434) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Mr Mabstoa on Mon Jul 30 02:36:41 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by SelkirkTMO on Sun Jul 29 20:21:20 2007. Yup, I never did two rounds on the duece's but I have done three rounds on the M-1 with a South Ferry and two Eight Streets! |
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| (468455) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Jeff H. on Mon Jul 30 05:07:45 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by RonInBayside on Sun Jul 29 23:47:26 2007. How could a trailer coach have anything other than friction braking? |
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| (468456) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Jeff H. on Mon Jul 30 05:12:57 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Mr Mabstoa on Sun Jul 29 16:30:50 2007. Full Release on classic SMEE differs from Running Releasein that the straight air pipe is vented directly. It only makes a difference when running with the B2 dropped. |
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| (468479) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by FLASH GORDON on Mon Jul 30 08:32:33 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Jeff H. on Mon Jul 30 05:12:57 2007. Waiting to see what happens if the B2 blows on you know what?FLASH GORDON |
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| (468505) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by BLE-NIMX on Mon Jul 30 09:56:50 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Broadway Lion on Sun Jul 29 22:57:59 2007. Dynamic braking on the ENGINE alone would cause for severe runin which is why most railroads prohibit using enginebrake. Using trainline handles will control for the most part the slack and runin. |
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| (468508) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by BLE-NIMX on Mon Jul 30 10:09:42 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Mr Mabstoa on Sun Jul 29 16:30:50 2007. On a SMEE, the controller or brake valve controls the entire consist as if it were the head car; there is no independant control to make one car do something different then the rest of the consist. The running release position OR the full release position and application service range as well are generally used to energize the release or application circuits and allow magnet valves on every car in consist to vent or feed the Straight air pipe. The pneumatical portion of the brake valve works if the electric brake is not functioning and is used in application positions to charge the train car by car to stop the consist, or in the full release to release the entire consist AT THE head car brake valve, instead of car by car at each of the car's magnet valves. Since NYCT uses an electric emergency, it would be faster to dump the brake pipe then it would to wait for air at the head car's feed valve to reach the end of the train and equalize |
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| (468525) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by Broadway Lion on Mon Jul 30 10:44:39 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Jeff H. on Mon Jul 30 05:07:45 2007. It *could* have track brakes.(Which of course *are* friction brakes.) |
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| (468586) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by RonInBayside on Mon Jul 30 12:30:19 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Jeff H. on Mon Jul 30 05:07:45 2007. My point was that Amtrak would not use dynamic braking from the locomotive to slow the train down before applying friction brakes in the cars, due to the jostling that would happen. Certainly it would reduce wear on the friction brakes, but passengers would complain. |
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| (468610) | |
Re: Of brake stands and ''dramatic braking'' |
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Posted by BLE-NIMX on Mon Jul 30 13:02:01 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by RonInBayside on Mon Jul 30 12:30:19 2007. Then why did you say the passengers favored it? They have no choice as to whether dynamic is used or to ride in the locomotive to experience it |
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