So you think you know about Trains?

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On a ‘compound’ steam locomotive, what is the function of the ‘simpling’ valve?
It is called that way, because it changes double/tripple expansion to single expansion.
Simpler: It lets fresh steam into the low pressure cylinders.
 
The simpling valve was opened which allowed steam directly from the boiler to the low pressure cylinder as well as the high pressure one. Not only did this provide maximum tractive effort when starting but also avoided problems that might arise if the high pressure piston was in a dead centre position. Once moving, the simpling valve was closed and the locomotive continued in compound operation.

Dave
 
The simpling valve was opened which allowed steam directly from the boiler to the low pressure cylinder as well as the high pressure one. Not only did this provide maximum tractive effort when starting but also avoided problems that might arise if the high pressure piston was in a dead centre position. Once moving, the simpling valve was closed and the locomotive continued in compound operation.

Dave
Where have you copied it? ;) It is great :clap:
 
I agree with the above except "fresh steam" it would be more acurate to call it high pressure steam.

Bill
 
This week's question:
When working with a ‘staff and ticket’ safe working system, what is the function of the ‘ticket’?
This is to allow more than one train to proceed along single line working in the same direction. The first driver is issued with a ticket authorising him to proceed. This is repeated if there are more than two trains. The last train carries the staff. Until the staff is received at the end of the section, no train can proceed in the opposite direction.
 
a staff allows a train to pass alternatingly from one direction to the other, a 'Ticket' allows one or more train to travel in the same direction, followed on another train by the 'train staff'.
 
Presuming this is right, this sounds somehow very Victorian to me. :hehe:

Greetings from nighttime Amsterdam,

Jan
 
a staff allows a train to pass alternatingly from one direction to the other, a 'Ticket' allows one or more train to travel in the same direction, followed on another train by the 'train staff'.

of course it more complicated than this in reality, i just tried to give a short answer.

Paul - Ex qld rail station operations
 
by the way these rules are no longer permitted to be used as they are deemed unsafe!!!! (but these rules were good enough to be used for 140(roughly) in Queensland)
 
That would be in Oz across the Nullarbor Plain 478km with a few wiggly bits either side to break the monotony .
One of the few places where you wont miss anything if you blink or rest your eyes for awhile.

Dave
 
Welcome to the Trains Trivia of the Week thread.

Every Wednesday we will ask you a question here related to trains, and you will have a week to answer the question. Next Wednesday, we will update the previous week's answer and put in a new question again. You can use this thread to discuss your answers.

If you have a trivia question which you want to be featured in this section, email it through to trainznews@n3vgames.com along with the answer.

So you are a ferroequinologist......right? :)

Last week's answer:

A ‘staff and ticket’ safe working system uses a ‘staff’ as a token to permit a train into a section of rail line. As only one staff will exist for a particular section of rail line, you will need a way of bringing the staff back to send a train in the same direction again. This either requires a returning train, or requires the staff to be returned by road to the originating station.

So as to allow two trains to travel in the same direction, a ‘ticket’ can be used in place of the staff. The ‘ticket’ will have the train information written on it (most tickets are printed with boxes for this information), and will be stored in a box that can only be unlocked using the staff (this ensures the tickets can only be accessed when the staff is available at that station). When the crew receive the ticket, they must also see that the staff is available for the same section of line, so as to ensure that another train is not in the section.

So as to ensure that no two trains are in the same section, the signalman must have received a message from the next station to inform him that the previous train has cleared the section of line. Other rules also prevent this situation occurring.
Tickets are rarely used on mainline railways, however the ‘staff’ system is still in use in some locations. On busy rail lines, the ‘staff and ticket’ system was replaced by ‘electric staff’ systems, which had multiple staffs locked in a unit, which was electrically linked to an identical unit at the other end of the section. This allowed multiple trains in the same direction, but only allowed one staff to be removed at a time.


This week's question:
Where is the longest straight stretch of railway located?

It is located In Australia, between Port Augusta in SA and Kalgoorlie in WA - across the Nullabor Plain.
 
Welcome to the Trains Trivia of the Week thread.

Every Wednesday we will ask you a question here related to trains, and you will have a week to answer the question. Next Wednesday, we will update the previous week's answer and put in a new question again. You can use this thread to discuss your answers.

If you have a trivia question which you want to be featured in this section, email it through to trainznews@n3vgames.com along with the answer.

So you are a ferroequinologist......right? :)

Last week's answer:

A ‘staff and ticket’ safe working system uses a ‘staff’ as a token to permit a train into a section of rail line. As only one staff will exist for a particular section of rail line, you will need a way of bringing the staff back to send a train in the same direction again. This either requires a returning train, or requires the staff to be returned by road to the originating station.

So as to allow two trains to travel in the same direction, a ‘ticket’ can be used in place of the staff. The ‘ticket’ will have the train information written on it (most tickets are printed with boxes for this information), and will be stored in a box that can only be unlocked using the staff (this ensures the tickets can only be accessed when the staff is available at that station). When the crew receive the ticket, they must also see that the staff is available for the same section of line, so as to ensure that another train is not in the section.

So as to ensure that no two trains are in the same section, the signalman must have received a message from the next station to inform him that the previous train has cleared the section of line. Other rules also prevent this situation occurring.
Tickets are rarely used on mainline railways, however the ‘staff’ system is still in use in some locations. On busy rail lines, the ‘staff and ticket’ system was replaced by ‘electric staff’ systems, which had multiple staffs locked in a unit, which was electrically linked to an identical unit at the other end of the section. This allowed multiple trains in the same direction, but only allowed one staff to be removed at a time.


This week's question:
Where is the longest straight stretch of railway located?

478km across the Nullabor Plain in Australia
 
In series resistance is high giving the loco high traction to start off it then changes to
Series -parallel where the resistance is being dropped off in steps ( notches ) to accelerate the loco up to about 30km/h
if full speed is selected resistance is reapplied to to the motors then notched out again to increase speed & decrease resistance until
full speed is reached without resistance the motors are now now in parallel

Dave
 
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