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25. Terminus station loco-release loop design.


C126

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Rather a dry subject, but I hope it will caution others from making this mistake.  Before cutting a single piece of wood, having designed and refined my layout to 'perfection' over the years, the passenger station throat looked like this :

 

211979618_AthVictold.jpg.7e5965ca8458c8e66a5ce9bcbfa491f4.jpg

Perfect! I believed.  The junction was only 'two points long', so allowing the maximum length of train either side.  Trains could depart to the left, and be un-coupled by the 'Hand of God' un-seen behind a tall warehouse.

 

However, in February I wondered again how a locomotive would run round its train.  Having had the pleasure of being aboard a '47' during such a manoeuvre one Saturday evening at Eastbourne - the 'Sussex Scot' running E.C.S. to Brighton - I looked more closely at the track layout I had proposed...

 

After arriving and the crew changing cabs, the loco in Platform 1 would have to propel (push) its train back onto the bi-directional running line, un-couple and reverse a little into Platform 2 (which, therefore, also has to be empty), before running along the loop and back onto its train, pushing it back into Platform 1 for departure.  This also required smooth running over a 3-way point - not my favourite piece of model permanent way.

 

A faster-operating and more elegant solution would be to have the loop on the other side of the running line and straight ahead of the platform :

 

1571266127_AthVictnew.jpg.80851a9f8141831b5cd3c7c5bbeb1ddc.jpg

It also replaces a 3-way point.  The (shorter) Platform 2 can continue to be used by multiple-units, and the loco's train does not foul the running line.  The disadvantage is making the run-round loop less accessible to rarer loco-hauled trains using Platform 2 or the Milk siding, but I think this is out-weighed by the advantages.

 

Thankfully, I realised all this before laying a single rail.  With model shops closed preventing me from buying the track, this is still a theoretical solution, but I hope it is the most economical and practical, and it appears more 'realistic'.  Any comments gratefully received, and I hope this is of use to others designing stations.

Edited by C126
Typos.

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That looks much better. Tandem (3-way) turnouts not a good idea in a station throat. Yes, I know Kings Cross has (or had) examples, but best not in model form.

Like the way the train engine would propel out the ECS - very prototypical in a situation such as this. I assume the actual run-round is offstage on the left.

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  • RMweb Gold

I am much obliged for the commendation from one I esteem highly, and thanks for the trap point tip.  I had not thought of this.  Thank you for taking the time to give this your consideration, and so promptly.  Just need the shops to open to get laying the track...  Best wishes.

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  • RMweb Gold
16 hours ago, Peter Kazmierczak said:

Do you have a plan of the whole layout please?

 

 

Certainly.  Hope this link works:

 

https://www.rmweb.co.uk/community/uploads/monthly_2020_11/PICT2209.JPG.bb428003901aab64d5a69f25d5320736.JPG

 

The lower (East Yard) is laid and a start made on the scenery, the upper part on the viaduct - Atherington Victoria station - awaits the re-opening of the shops and more pay-days.  Do say if you have any questions/suggestions.  Best wishes.

Edited by C126
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I like your idea of a low-level goods yard, with the passenger station on a viaduct. A very common set-up, but rarely modelled.

 

A few thoughts:

  • I assume there are hidden sidings beneath the station, but how do you access them to set up trains?
  • I like the spacious feel to the goods facilities. That's a really good feature.
  • There seems to be no run-round loop in the yard, so will there be a lot of propelling movements in and out? You could put a crossover at the end of the two parallel lines on the right.
  • Does the layout continue to the left? Is there a fiddle yard or storage cassettes there?

Regards,

Peter

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  • RMweb Gold

Dear Mr Kazmierczak, Thank you for your kind comments and continued interest.  You raise some apposite points, of which I have only now started to experience the results.


The idea was for me to reach into the hidden yard 'head shunt' under the viaduct station to feed in wagons from a side table, and even have a parallel track beside it (not connected) to store a second train on.  Sadly, the house's waste down-pipe, against which the layout end abuts, makes this less accessable than hoped, and I am considering constructing a couple of four-foot 'cassettes' to store on a rack underneath.  Fearful of my lack of wood-working abilities and their ungainly nature, instead I might just store the wagons separately, and take longer to assemble a new train.


The lack of the run-round loop gives me an excuse to have a little shunter ('03'/'04'/'08'/'09') resident to 'flutter around' and assemble the wagons daily for the departure road: the fun bit I hope.  Only when the layout was built, did I realise it would need two shunters, plus the train loco, to extract the wagons: whoops!  Invoking more license, I will pretend there is a short (the shunter plus four wagons) run-round loop under the viaduct.  The 'Hand of God' will be swapping the loco between train ends.  I can just reach inelegantly into the viaduct with a card strip to uncouple the propelling loco.

 

Your suggestion of a run-round loop on the two 'forward' sidings on the left is good.  However, the plan was to have one of these occupied with a train ready for departure, and the nearest one for the 'arrival'.  The resident shunting loco would then nip out from the warehouse siding, and pull off the back of the arriving train, ready-marshalled for the warehouse and minerals siding.  The arriving loco would then shunt its remainder into the right-hand, general merchandise, sidings.  Would the new run-round loop thus be 'blocked'?  Does this sound 'realistic'?  One needs this arrival and departure capacity somewhere, I think.  I will have a ponder after posting this, needing some 'free space' to doodle the consequent operation of the yard.


The layout ends to the left.  The station's 'loop' on the viaduct is a fiction, again requiring the 'Hand of God' to reach over behind the warehouse (currently cardboard boxes of the estimated height) to swap locos to the correct end.  Not only did I make the layout protrude more into the garage than intended (it should really be only 2'2" width), nine-and-a-half feet is the maximum length without gross inconvenience to all.

 

I hope this answers all your questions.  Thanks again for your interest and advice.  With my best wishes, Neil.

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