Bad train pictures

[Nora]

Here's a bad train picture:



Seriously, though, who really needs a 60+ page thread of questions, dumb and otherwise? Nobody's ever going to read through all this and it's probably more effective to just start a new thread. Can't we just let this die? I'd delete the thread except I can't, since there are replies.

--Nora, 12/26/05





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OK, I have a couple (probably silly) questions. I'm making a new thread for them so that I can come back and add to this thread if I have any more silly questions. I'm sure I will.

The first thing is about something I saw today. We were driving past a large yard and I saw, twice, two engines going around the yard together with this...thing in between them. It was painted like an engine but it was not as tall as an engine. The only way I can think of to describe it is that it looked like our plastic butter dish with the cover on -- that's the kind of shape it was. Does anyone have any idea what this THING was? I'm assuming it wasn't a giant butter car. [:D]

Also when there are two [or more] engines on a train are they both [all] running or is only the first one running and the others are being pulled around? What about the collections of 6-8 engines with no other cars I see going by the house now and again? And why are the engines always pointing in opposite directions instead of both facing the same way?

Thanks for taking the time to read my stupid questions. I hope someone can answer them. [:)]

--Nora

[Nora]

Here's a bad train picture:



Seriously, though, who really needs a 60+ page thread of questions, dumb and otherwise? Nobody's ever going to read through all this and it's probably more effective to just start a new thread. Can't we just let this die? I'd delete the thread except I can't, since there are replies.

--Nora, 12/26/05





--------------

OK, I have a couple (probably silly) questions. I'm making a new thread for them so that I can come back and add to this thread if I have any more silly questions. I'm sure I will.

The first thing is about something I saw today. We were driving past a large yard and I saw, twice, two engines going around the yard together with this...thing in between them. It was painted like an engine but it was not as tall as an engine. The only way I can think of to describe it is that it looked like our plastic butter dish with the cover on -- that's the kind of shape it was. Does anyone have any idea what this THING was? I'm assuming it wasn't a giant butter car. [:D]

Also when there are two [or more] engines on a train are they both [all] running or is only the first one running and the others are being pulled around? What about the collections of 6-8 engines with no other cars I see going by the house now and again? And why are the engines always pointing in opposite directions instead of both facing the same way?

Thanks for taking the time to read my stupid questions. I hope someone can answer them. [:)]

--Nora

[wabash1]

these are not silly questions to answer the first one the thing you saw as a butter dish was a slug. it at one time was a engine that was either wrecked or just beyond repair so they use the traction motors to help the other engines pull tonnage around the yard and in hump service. they get there power to operate from the other engines. ok for the second engine there is no good answer the engines if only 2 are probley running. but if there isnt much need for extra power they are either isolated or dead in tow. just being pulled around.

[wabash1]

these are not silly questions to answer the first one the thing you saw as a butter dish was a slug. it at one time was a engine that was either wrecked or just beyond repair so they use the traction motors to help the other engines pull tonnage around the yard and in hump service. they get there power to operate from the other engines. ok for the second engine there is no good answer the engines if only 2 are probley running. but if there isnt much need for extra power they are either isolated or dead in tow. just being pulled around.

[Anonymous]

Heres one:
How do you do an air test?

[Anonymous]

Heres one:
How do you do an air test?

[Anonymous]

Just wannah add something to the first two q's- as wabash1 said, these things ("slugs") are retired or wrecked engines. Traction motors help distribute power from other locos. Also, the top part is often filled with concrete to add more weight.(more weight - better traction) And another question- often, extra locomotives in consist are put there to help the front loco. They also might be placed in the end of the train or in the middle. Here in Alaska, an extra loco might also generate the power for passenger cars (heating, electricity and stuff)
Good questions, by the way. You have found the right place to get them answered.

[Anonymous]

Just wannah add something to the first two q's- as wabash1 said, these things ("slugs") are retired or wrecked engines. Traction motors help distribute power from other locos. Also, the top part is often filled with concrete to add more weight.(more weight - better traction) And another question- often, extra locomotives in consist are put there to help the front loco. They also might be placed in the end of the train or in the middle. Here in Alaska, an extra loco might also generate the power for passenger cars (heating, electricity and stuff)
Good questions, by the way. You have found the right place to get them answered.

[swknox]

I have to agree with the other post Nora. What you saw was probley a slug. To give you an idea if it was or not, a slug is usally as long as most Gp 38's or Gp 40's ( The smaller 4 axel locos you see on branch lines not the huge 6 axel units you see on busy mainlines) but the main exception is it has no cab for a crew although most do have steps on the front and rear porches like most trains with cabs. Most have 4 axels I don't ever recall one with 6 axels although I could be wrong with that. Most stand at about half the height as a nomal locomotive because they don't have a cab or a prime mover (motor) inside the long hood and like Wabash 1 said they get there power from the loco's they are hooked to.

[swknox]

I have to agree with the other post Nora. What you saw was probley a slug. To give you an idea if it was or not, a slug is usally as long as most Gp 38's or Gp 40's ( The smaller 4 axel locos you see on branch lines not the huge 6 axel units you see on busy mainlines) but the main exception is it has no cab for a crew although most do have steps on the front and rear porches like most trains with cabs. Most have 4 axels I don't ever recall one with 6 axels although I could be wrong with that. Most stand at about half the height as a nomal locomotive because they don't have a cab or a prime mover (motor) inside the long hood and like Wabash 1 said they get there power from the loco's they are hooked to.

[cabforward]

some members resent seeing the same questions repeated.. some members resent questions about something they've known since they were in short pants.. you will read their posts and learn to ignore them..

a couple of points not covered so far, i think: a string of engines without cars (loads) behind them is known as 'light engines', or light engine if one..
they are likely transiting from storage tracks to a road assignment, or returning from a run to storage.. if you are familiar with the yard arrangment, you can figure this out..

most engines are connected by random position, it's just the way they were pointed when they were called up.. members have posted comments that a r.r. may require engines to face a certain way so if the lead engine fails, the second will take its place easily.. nowadays, r.rs. require engines to always face the cab in the trains' forward direction.. way-back-when, it didn't matter.. one r.r. requires the trailing engine to always face the opposite way, in case they meet an opposing train that needs a substitute engine, they can drop off the trailer, which is facing their direction..

the slug unit was also termed a 'calf' in the distant past.. the attached loco was 'the cow'.. many calfs are permanently configured to the cow..

the only stupid question is the one not asked..

[cabforward]

some members resent seeing the same questions repeated.. some members resent questions about something they've known since they were in short pants.. you will read their posts and learn to ignore them..

a couple of points not covered so far, i think: a string of engines without cars (loads) behind them is known as 'light engines', or light engine if one..
they are likely transiting from storage tracks to a road assignment, or returning from a run to storage.. if you are familiar with the yard arrangment, you can figure this out..

most engines are connected by random position, it's just the way they were pointed when they were called up.. members have posted comments that a r.r. may require engines to face a certain way so if the lead engine fails, the second will take its place easily.. nowadays, r.rs. require engines to always face the cab in the trains' forward direction.. way-back-when, it didn't matter.. one r.r. requires the trailing engine to always face the opposite way, in case they meet an opposing train that needs a substitute engine, they can drop off the trailer, which is facing their direction..

the slug unit was also termed a 'calf' in the distant past.. the attached loco was 'the cow'.. many calfs are permanently configured to the cow..

the only stupid question is the one not asked..

[wabash1]

to do a air brake test there is 3 differant ones to do. ( there are more but most fall back to these basic rules) engines only and complete train.

1) engines only with automatic cut in and independant in lead release the automatic and with conductor on ground release the independant brake. cylinders should go in. when released apply the automatic the engines should set up. when they do bail the independant . they should release when released set more automatic when they set release auto matic. when released set independant. when set brake test is done.

2) complete train test is done when the rear of train is within 15lbs of feed valve setting as seen by person on rear of train with a gauge or by the e.o,t, you make a full service brake reduction. when they quit exhausting you cut out the automatic brake valve and wait 1 min for the air to settle down. the second minute you take a reading from the brake pipe gage when the second min is up take another reading of brake pipe gauge this is the amount of leakage. it can not be more than 5 psi. this is a air leakage test and the brakes are being walked by the carmen. when they are don the brake test is done. there are several more styles of this test but they are basicly the same.

3 flow meter type. i wont get into this as i dont believe in this test. if anyone else wants to talk about this one go ahead.

also thanks for adding what i didnt about the slugs. sand or cement is added for the weight i didnt think about that when i wrote the reply.

[wabash1]

to do a air brake test there is 3 differant ones to do. ( there are more but most fall back to these basic rules) engines only and complete train.

1) engines only with automatic cut in and independant in lead release the automatic and with conductor on ground release the independant brake. cylinders should go in. when released apply the automatic the engines should set up. when they do bail the independant . they should release when released set more automatic when they set release auto matic. when released set independant. when set brake test is done.

2) complete train test is done when the rear of train is within 15lbs of feed valve setting as seen by person on rear of train with a gauge or by the e.o,t, you make a full service brake reduction. when they quit exhausting you cut out the automatic brake valve and wait 1 min for the air to settle down. the second minute you take a reading from the brake pipe gage when the second min is up take another reading of brake pipe gauge this is the amount of leakage. it can not be more than 5 psi. this is a air leakage test and the brakes are being walked by the carmen. when they are don the brake test is done. there are several more styles of this test but they are basicly the same.

3 flow meter type. i wont get into this as i dont believe in this test. if anyone else wants to talk about this one go ahead.

also thanks for adding what i didnt about the slugs. sand or cement is added for the weight i didnt think about that when i wrote the reply.

[Modelcar]

...May I comment a little further. Beyond all the good info already posted....To state some basic info: A railroad engine provides power with a prime mover..[usually a diesel engine], and connected to that is a divice to generate electricity. This power is then sent to the traction motors which are connected to each axle [most cases]...where you see each wheel located and they provide the power to each axle to move the engine. The "slug"....has only the traction motors to receive power from an engine it is physically and electrictly connected to, to help do the work. Since it doesn't have a "prime mover" it doesn't have the weight needed to transfer that power from the wheels to the rails without just spinning it's wheels, extra weight is added to the slug itself [as stated above], to provide that traction needed to be useful. The engine it is attached to has enough power to supply the slug as well.

[Modelcar]

...May I comment a little further. Beyond all the good info already posted....To state some basic info: A railroad engine provides power with a prime mover..[usually a diesel engine], and connected to that is a divice to generate electricity. This power is then sent to the traction motors which are connected to each axle [most cases]...where you see each wheel located and they provide the power to each axle to move the engine. The "slug"....has only the traction motors to receive power from an engine it is physically and electrictly connected to, to help do the work. Since it doesn't have a "prime mover" it doesn't have the weight needed to transfer that power from the wheels to the rails without just spinning it's wheels, extra weight is added to the slug itself [as stated above], to provide that traction needed to be useful. The engine it is attached to has enough power to supply the slug as well.

[dmoore74]

There is actually a difference between a slug and a calf. As a number of people have correctly stated the slug has traction motors but no prime mover and it receives power from the other locomotive(s). A calf on the other hand does have a prime mover but no cab or operating controls. The calf is controlled through the MU connection to the lead locomotive (cow). EMD has manufactured cow-calf combinations in the past but I don't think they do at the current time.

[dmoore74]

There is actually a difference between a slug and a calf. As a number of people have correctly stated the slug has traction motors but no prime mover and it receives power from the other locomotive(s). A calf on the other hand does have a prime mover but no cab or operating controls. The calf is controlled through the MU connection to the lead locomotive (cow). EMD has manufactured cow-calf combinations in the past but I don't think they do at the current time.

[Nora]

It sounds like that's what I saw -- a slug. Thanks for the very informative answers; I'm sure I'll be back with more questions soon. [:)]

[Nora]

It sounds like that's what I saw -- a slug. Thanks for the very informative answers; I'm sure I'll be back with more questions soon. [:)]

[TH&B]

Someone said they never seen a six axled slug, but in fact they are not uncommon, BNSF in Kansas have them (sd9), CR in Buffalo had them maybe still do as CSX, NW used old TRAINMASTERS. Some slugs are scratch built and can be hard to recognise the parts they are made of.

[TH&B]

Someone said they never seen a six axled slug, but in fact they are not uncommon, BNSF in Kansas have them (sd9), CR in Buffalo had them maybe still do as CSX, NW used old TRAINMASTERS. Some slugs are scratch built and can be hard to recognise the parts they are made of.

[Anonymous]

There are not stupid questions, just stupid answers



Tom
GOD BLESS THE GREAT NORTHERN

[Anonymous]

There are not stupid questions, just stupid answers



Tom
GOD BLESS THE GREAT NORTHERN

[Willy2]

Here another question. It is not about yard engines. My question is how do mainline signals know to change to red when a train is coming and another train must wait? Or how do they know to turn green when a waiting train is able to proceed.

Willy

[Willy2]

Here another question. It is not about yard engines. My question is how do mainline signals know to change to red when a train is coming and another train must wait? Or how do they know to turn green when a waiting train is able to proceed.

Willy

[Anonymous]

Thank you Nora for starting this thread. It may become one of the most read and most informative threads yet or ever posted.

I too would like to throw a question in the mix. One of the forum members has a quote from a song at the end of his posts. It goes something like this, I may ride the blind, ain't got no railroad fair. We all have heard of duck blinds (well anyway down South we have) def: a place of concealment, something to hinder sight. And I have read stories about NYC engines scooping water from a track pan. When the tender overflowed the water would shoot out a spout near the end of the tender and anyone there would be soaked. In the Winter the track pan was heated just enough to keep the water from freezing. Anyone hidden behind the tender , in Winter, was in for a cold and unwanted surprise. Is this area behind the tender called the blind or am I on the wrong track (pun intended). Another guess is the caboose. If the engine were considered the point then the caboose might be construed as the blind. Or is this idea just the blind leading the blind?

Nora has started a good thing here. Now we can all get educated. Again, Thank You, Nora.

Have a great day. Who said you can't teach an old dog new tricks? Arf, arf.

As always, stay safe and Look, Listen, and LIVE.

Don't Forget the Troops

Ed for President

[Anonymous]

Thank you Nora for starting this thread. It may become one of the most read and most informative threads yet or ever posted.

I too would like to throw a question in the mix. One of the forum members has a quote from a song at the end of his posts. It goes something like this, I may ride the blind, ain't got no railroad fair. We all have heard of duck blinds (well anyway down South we have) def: a place of concealment, something to hinder sight. And I have read stories about NYC engines scooping water from a track pan. When the tender overflowed the water would shoot out a spout near the end of the tender and anyone there would be soaked. In the Winter the track pan was heated just enough to keep the water from freezing. Anyone hidden behind the tender , in Winter, was in for a cold and unwanted surprise. Is this area behind the tender called the blind or am I on the wrong track (pun intended). Another guess is the caboose. If the engine were considered the point then the caboose might be construed as the blind. Or is this idea just the blind leading the blind?

Nora has started a good thing here. Now we can all get educated. Again, Thank You, Nora.

Have a great day. Who said you can't teach an old dog new tricks? Arf, arf.

As always, stay safe and Look, Listen, and LIVE.

Don't Forget the Troops

Ed for President

[Anonymous]

I'll try to answer the signal question-
when train passes green signal it triggers some sensor that makes the light turn red. It will remain red until that train either passes the next signal or it will change from red to amber "approach" after a certain period of time. Its kinda similar with meeting trains- first train to reach the signal on one end of the block (distance between two signals) wins. The slower train has to wait on the siding until the other one clears that block. yeah.
Please correct me if i'm wrong.

[Anonymous]

I'll try to answer the signal question-
when train passes green signal it triggers some sensor that makes the light turn red. It will remain red until that train either passes the next signal or it will change from red to amber "approach" after a certain period of time. Its kinda similar with meeting trains- first train to reach the signal on one end of the block (distance between two signals) wins. The slower train has to wait on the siding until the other one clears that block. yeah.
Please correct me if i'm wrong.