Train Heat Problems

[Rail Freak]

What do "Heat Problems" mean?

Thanx

 

[NY Penn]

Either the machinery in the train itself overheats or, because rails expand in the heat, trains must operate slower (which causes delays).

 

[guest]

What do "Heat Problems" mean?

Thanx

It would help to know how it was used.

 

[bobnabq]

because rails expand in the heat, trains must operate slower (which causes delays).

That has been a problem at times with the Rail Runner commuter train here in the ABQ area.

 

[OlympianHiawatha]

What do "Heat Problems" mean?

Thanx

It would help to know how it was used.

My Cat has Heat Problems! :lol: :lol:

 

[The Davy Crockett]

What do "Heat Problems" mean?

Thanx

It would help to know how it was used.

My Cat has Heat Problems! :lol: :lol:

There is a 'fix' for that!

 

[john h]

because rails expand in the heat, trains must operate slower (which causes delays).

That has been a problem at times with the Rail Runner commuter train here in the ABQ area.

Also the TRE communiter train in Dallas/Ft Worth IE: Route(s) Affected: TRE Update, 8/9, 3p

Effective Date: 8/9/2011

TRE Update, 8/9, 3p

TRE customers may experience delays up to 15 minutes between 2 and 9 p.m. today due to speed restrictions caused by high track temperatures

 

[the_traveler]

What do "Heat Problems" mean?

Thanx

It would help to know how it was used.

My Cat has Heat Problems! :lol: :lol:

Then instead of problem with the rails, it may mean problems with her nails!

 

[George Harris]

What do "Heat Problems" mean?

Thanx

At this time of year and with the teemperatures being what they are, we are talking about the rails being hot. Steel expands and contracts with temperature changes, or tries to. With welded rail, it cannot, so when the weather gets cooler the rail is in tension. When the rail gets hotter, it is in compression. That means in hot weather the rail wants to push out sideways to relax the force. This sideways push is resisted by the ties and ballast. When it does turn loose and move sideways it usually happens under a train because the shaking of the track makes it easier for it to move. Therefore, when it gets really hot speed is reduced for two reasons: First and foremost to reduce the force the train puts into the track so that it is below what it would take for the track to turn loose and buckle. Second, with the speed being low, if it does turn loose, the train will be less likely to derail.

There is a lot of wrong information out there. It was reported in one newspaper it was because the rail got so hot it got soft. That happens at somewhere above 1000 degrees if I remember right.

 

[AlanB]

Second, with the speed being low, if it does turn loose, the train will be less likely to derail.

Or if it does still manage to derail, at least the impact on the passengers will be considerably less and therefore fewer major injuries. Also less damage to the equipment should it derail.

 

[Cho Cho Charlie]

With welded rail, it cannot, so when the weather gets cooler the rail is in tension. When the rail gets hotter, it is in compression.

Do they (should they?) put expansion joints into welded rails to handle this?

 

[AlanB]

With welded rail, it cannot, so when the weather gets cooler the rail is in tension. When the rail gets hotter, it is in compression.

Do they (should they?) put expansion joints into welded rails to handle this?

Expansion joints are what you have with stick rail as it's called, or un-welded rail. The very act of welding removes the expansion joint and provides a better ride that reduces wear on the rail and on the wheels of the cars & engines. Welding gets rid of the traditional clickity-clack that trains made famous.

This is not to say that all expansion joints are removed; switches require joints, signals, bridges, etc. And after 2 or 3 miles of welded rail it becomes necessary to simply put in a joint if none of the above things have happened to break things up.

 

[the_traveler]

Stick rail or un-welded tail gave what was the "clickedly-clack" and the bouncy ride, whenever the wheels hit those expansion joints. While I miss that noise, I'll tale the smoother ride.!

 

[The Davy Crockett]

Stick rail or un-welded tail gave what was the "clickedly-clack" and the bouncy ride, whenever the wheels hit those expansion joints. While I miss that noise, I'll tale the smoother ride.!

I wonder if there is a recording of the "clickedly-clack" that one could download into one's Ipod? :lol: That way you'd have the best of both worlds!

 

[boxcar479]

I sometimes take on line surveys that include unseen commercials, they use a sound check that is the clickety clack ofa train . I don't know if is an Amtrak train or not, but I sit back and close my eyes and imagine I am on the train.

 

[George Harris]

With welded rail, it cannot, so when the weather gets cooler the rail is in tension. When the rail gets hotter, it is in compression.

Do they (should they?) put expansion joints into welded rails to handle this?

Expansion joints are what you have with stick rail as it's called, or un-welded rail. The very act of welding removes the expansion joint and provides a better ride that reduces wear on the rail and on the wheels of the cars & engines. Welding gets rid of the traditional clickity-clack that trains made famous.

This is not to say that all expansion joints are removed; switches require joints, signals, bridges, etc. And after 2 or 3 miles of welded rail it becomes necessary to simply put in a joint if none of the above things have happened to break things up.

No, NO, a thousand times NO!

Expansion joints are completely and absolutely unnecessary with a couple of very rare exceptions, such as in approach to the draw spans in draw bridges.

Rail can be welded up for an essentially infinite length. You do not need to break things up every 2 or 3 miles or any other interval. In fact, once you get past a few hundred feet it does not matter how long the section is. Sliding friction keeps all but the end 300 feet or so from moving. I can think of quite a few examples where the rails are continuous for over 100 miles.

You can weld up through turnouts. It is done.

Insulated joints are now normally glued so that they do not move, either.

 

[TLC]

With welded rail, it cannot, so when the weather gets cooler the rail is in tension. When the rail gets hotter, it is in compression.

Do they (should they?) put expansion joints into welded rails to handle this?

Expansion joints are what you have with stick rail as it's called, or un-welded rail. The very act of welding removes the expansion joint and provides a better ride that reduces wear on the rail and on the wheels of the cars & engines. Welding gets rid of the traditional clickity-clack that trains made famous.

This is not to say that all expansion joints are removed; switches require joints, signals, bridges, etc. And after 2 or 3 miles of welded rail it becomes necessary to simply put in a joint if none of the above things have happened to break things up.

No, NO, a thousand times NO!

Expansion joints are completely and absolutely unnecessary with a couple of very rare exceptions, such as in approach to the draw spans in draw bridges.

Rail can be welded up for an essentially infinite length. You do not need to break things up every 2 or 3 miles or any other interval. In fact, once you get past a few hundred feet it does not matter how long the section is. Sliding friction keeps all but the end 300 feet or so from moving. I can think of quite a few examples where the rails are continuous for over 100 miles.

You can weld up through turnouts. It is done.

Insulated joints are now normally glued so that they do not move, either.

Does that mean that Allen could be wrong?

 

[PRR 60]

Expansion joints are what you have with stick rail as it's called, or un-welded rail. The very act of welding removes the expansion joint and provides a better ride that reduces wear on the rail and on the wheels of the cars & engines. Welding gets rid of the traditional clickity-clack that trains made famous.

This is not to say that all expansion joints are removed; switches require joints, signals, bridges, etc. And after 2 or 3 miles of welded rail it becomes necessary to simply put in a joint if none of the above things have happened to break things up.

No, NO, a thousand times NO!

Expansion joints are completely and absolutely unnecessary with a couple of very rare exceptions, such as in approach to the draw spans in draw bridges.

Rail can be welded up for an essentially infinite length. You do not need to break things up every 2 or 3 miles or any other interval. In fact, once you get past a few hundred feet it does not matter how long the section is. Sliding friction keeps all but the end 300 feet or so from moving. I can think of quite a few examples where the rails are continuous for over 100 miles.

You can weld up through turnouts. It is done.

Insulated joints are now normally glued so that they do not move, either.

You would be surprised (or maybe not) how many engineer-type can't grasp the stress-strain concept with CWR. They say, "but you have to let it expand somewhere, don't you?" That's when I say, "don't quit your amps and volts job."

 

[Ryan]

Does that mean that Allen could be wrong?

I dunno, never heard of the guy.

 

[TLC]

Does that mean that Allen could be wrong?

I dunno, never heard of the guy.

He probaly never heard of you either!

 

[oldtimer]

Does that mean that Allen could be wrong?

I dunno, never heard of the guy.

He probaly never heard of you either!

Allen could be wrong, but Alan rarely is!

hboy: :blush: :giggle:

 

[George Harris]

Does that mean that Allen could be wrong?

I dunno, never heard of the guy.

He probaly never heard of you either!

Allen could be wrong, but Alan rarely is!

hboy: :blush: :giggle:

If you want to visit the place where the residents never make any mistakes, visit a cemetary.

 

[leemell]

Does that mean that Allen could be wrong?

I dunno, never heard of the guy.

He probaly never heard of you either!

Allen could be wrong, but Alan rarely is!

hboy: :blush: :giggle:

If you want to visit the place where the residents never make any mistakes, visit a cemetary.

Spoken like a true engineer. And that is a compliment.