So you think you know about Trains?

tdstead · May 28, 2012

On a diesel-electric or electric locomotive, what is the difference between ‘series’, ‘series-parallel’ and ‘parallel’, in relation to the traction motors?

Pretty simple like the L class Locos I rode on in victoria thast had 33 throttle notches, the first few notches are Series is the slowest used mostly for shunting and to get the train moving , as the throttle advances the next series of knotches is Series Paralllel then finally for the higher speed the last notches are full Parallel.

Also intresting is the Polish locos that have a Fiel Lever you change at higher speeds.

Tom

jjanmarine3 · May 30, 2012

The difference is the way that the traction motors are coupled across the main traction generator or main traction alternator .
In simplish short terms relating to diesel locomotives, : When a locomotive starts moving Amperage is High and Voltage is low, as the traction motors speed up the A & V values move toward each other and when saturation point is reached the armarures can turn no faster and the fields are also saturated ( full to their capacity ) at a certain set value before this saturation point is reached low voltage fs relays will be energised ( by a measuring device that monitors volts and amps ) which in turn will pick up high voltage fs contactors, which will couple external resistances to the the traction motors . This results in more 'electrical space' to enable the traction motors to turn faster.This process is called 'field shunting'. When the traction motors slow down again this process is reversed .The driver controls this process by using a lever in the cab that will allow or disallow field shunting. I suppose a person could say this is the locomotives electrical gearbox .

Geoff404 · Jun 1, 2012

The terms "Series", "Series-parallel" and "Parallel" normally refer to the connections of the Armature (the bit that rotates) and the Field windings of a Traction Motor. At low speeds the armature is rotating slowly and therefore producing (for a given magnetic field) a low "Back-emf" hence for a given supply voltage a high armature current. By connecting a high current Field winding in Series with the high current Armature winding a powerful magnetic field is created and the motor generates a high torque at low speeds. Hence the use of the "Series" connection for starting and low speed operation. In the "Series-parallel" configuration a second Field winding, connected in parallel with the Series Armature and Field windings is energised, this has the effect of maintaining the Stator Magnetic Field as the motor speed, and hence back-emf, increases. In the "Parallel" configuration the Armature and Field windings are connected in parallel. This configuration is appropriate for high speed operation.

fillflange · Jun 4, 2012

shadowarrior said:
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:

The longest straight stretch of railway line in the world is across the Nullabor Plain in Australia on the Trans-Australia Railway, running from the 797KM post (west of Ooldea), to the 1275KM post (west of Loongana), covering 478KM (approx 297 miles).

This week's question:
On a diesel-electric or electric locomotive, what is the difference between ‘series’, ‘series-parallel’ and ‘parallel’, in relation to the traction motors?

Le differenze sono che : in serie si mettono ad esempio in una loco di 6 assi motori tutti i motori in trazione uno dopo l'altro.In serie-parallelo si mettono in trazione due rami di motori di tre motori .In parallelo tre rami di due motori.In alcune loco elettriche dalla e 646-645 fs Italia vi è anche il super-parallelo però la loco ha 12 motori tre rami da quattro.

big_b · Jun 5, 2012

navvie - Railway builders track layers etc

dave

teddytoot · Jun 5, 2012

Navvie is the colloquial name for the labourers who did the basic earth moving for the original railways here in Britain. The name is a corruption of navigator, a name given to them when they were originally employed in digging out the canal system which preceeded the railways. Nowadays the term tend to be employed for any labourer employed in earthmoving work.

zava · Jun 10, 2012

Navvie, or navvy?

it does mean an unskilled laborer working on the constraction of a railway road, canal, or every sort of artificial passage, does it not?

big_b · Jun 13, 2012

navvie on tramp

walking from one job to another ( only means of transport )

Falaise · Jun 19, 2012

World Train

shadowarrior said:
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:

On a railway, a Navvie is a trackworker. On railways, this term was initially used to mean railway construction workers who were working to dig/build the trackbed, cuttings, embankments, and tunnels. The name actually comes from ‘navigators’, referring to the builders of the earlier canals. Later, the term was used to refer to any track worker, either construction or maintenance. Some locations still use the term ‘navvie’, with the suger cane tramways in Queensland using this as an official term for workers performing trackwork.

This week's question:
Carrying on from our previous question, what would a navvie mean when he was “on tramp”?

Why not in french:'(

big_b · Jun 21, 2012

In what year was the first EMD ‘FT’ type diesel locomotive produced?
November 1939

GARTHAH · Jul 6, 2012

first Garratt

When did the first Garratt locomotive operate, and for which railway was it built?
first Garratt was K1 2 foot gauge and it operated in Tasmania originally and currently it is on Welsh Highland Railway after repatriation and to UK and restoration.

cheers Garth

big_b · Jul 7, 2012

When working with 2 position signals (semaphore or colour light), what is the function of a ‘splitting home’ signal

Main & secondary track in a junction .Height of signal determines main & secondary

ad602000 · Jul 7, 2012

When did the first Garratt locomotive operate, and for which railway was it built?
1909 for the North-East Dundas Tramway, Tasmania

steamrodder · Jul 13, 2012

In 1907 Beyer, Peacock & Co. submitted a proposal for a 2 ft (610 mm) gauge 0-4-0+0-4-0 Garratt to the New South Wales Government Railways.... That's what I found in Wickipedia. -Robert-

teddytoot · Jul 13, 2012

As stated above, the first two Beyer-Garrats (K1 and K2) were supplied to the North East Dundas Tramway in 1909. The line closed in 1930 and they lay derelict in the deserted engine shed at Zeehan. In 1947 K1 was repurchased by Beyer Peacock and is now preserved in the UK. K2 was scrapped.

big_b · Jul 14, 2012

What is the purpose of a co-acting signal

To give the driver a better view of the signal from a distance usually due to some kind of obstruction natural or man made blocking the view of the signal at normal height.

nexusdj · Jul 21, 2012

A co-acting signal repeats the exact indication of the signal that it is associated with to give a driver a clearer indication where the associated main signal has restricted sighting .

JackDownUnder · Jul 22, 2012

shadowarrior said:
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:

The first Garratt locomotive, known as ‘K1’ (K class locomotive number 1) entered service in 1909 with the Tasmanian Government Railways on the North East Dundas tramway, in Tasmania, Australia. Locomotive K1 is now preserved operational on the Welsh Highlands Railway. A second locomotive (K2) was also built and operated, however was scrapped.

This week's question:
What is the purpose of a co-acting signal?

Co-acting signals were provided to make it easier for the driver to see the signal. It was thought that a standard height post would not afford the driver enough "sight distance" so this Co-acting signal was provided. From a long distance the top arm was clearly visible. As the train got closer the top arm was
so high that easy viewing was difficult by which time the bottom arm was in good view.

big_b · Jul 30, 2012

In what year did LNER A4 class locomotive #4468 (Mallard) set the world record for the fastest steam locomotive, and what speed was reached?

3/7/38 202.58 kph - 125.88 mph

Beattie · Jul 30, 2012

Whats the oldest operating railroad company in america and how old is it?

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