N Gauge Model Railway - Episode 8 - Viaduct and Archway Shops

Documenting my journey into model railways.

Building a model railway layout in any scale is a challenge.  If you are not an experienced railway modeller and are coming at this without the benefit of many layouts under your belt it can seem a bit daunting.

What are the challenges when building a model railway

1. Buying Your Track - This is a key barrier to progress, as track layout and more importantly what track you need to purchase, is going to determine how quickly you can build your layout. 
   
   Fortunately, I had a few scraps of secondhand flexitrack which meant I could get a rough idea of how many loops of continuous running track I would need and how many points.  This created a shopping list for eBay and Aliexpress and I could get on with some other critical elements of the build whilst I awaited delivery.
   
   
2. Track goes on top of some things - Where my particular layout is concerned I have two items which need to be built before I can lay any of the 2nd and 3rd loop track.  This comes in the form of a viaduct whihc pulls double duty as a tunnel.  Fortunately, I have access to a 3D printer and so after a few hours searching I was able to locate an STL file which met my needs... somewhat.
   
   
3. Building to a Budget can delay a Project - Model railways are expensive things and if you are not made of money then assembling your critical items might need to be spread over many weeks depending on your budget.  This can be a challenge when you are buying lots of points or turntables which can cost a fortune.  This can introduce delays which slow the process down and can suck all the fun out of the room. 
   
   We can all fall into the trap of prevarication but keeping up the momentum is key and there are lots of smaller projects which you can bring forward at little to no risk to the project as a whole.  Smaller scenic items which can be dropped into a layout at the right time are a godsend.

3D Printed Viaduct and Archway Shops - Cults 3D - £3

Whilst I waited for all my track components to arrive, I needed to build the elevated section of my layout (loop 3) and I had enough track to test the incline and build the up and down ramps.  The layout is intended to be viewed from the front and I wanted something a bit more visually interesting than a grassy hill.  This meant I needed to set the height of the tunnel so I could determine the height of my track and then put in place the loop 3 roadbed.

I found the perfect STL file on Cults 3D and shelled out the princely sum of £3.  I then set about  printing out a couple of these sections on my Photon Mono M5 to test on the layout.  They are huge chunky models which benefitted from hollowing out and adding some drain holes.  However, even after doing this I ended up with quite a lot of trapped resin which leaked out slowly... very slowly. 

Without realising that the designer had created a Low Relief version of the viaduct, I sliced the fronts off in Meshmixer to create fascias for all my arches.

Over the course of a week or two I printed off several fascias and infills to create a curved section of viaduct which hides the tunnel.

Archway Shops and Real World Inspiration

Ottley's Coffee & Catan - Inspired by my colleague and fellow boardgame fan Stephen Ottley.  Stephen is our resident coffee afficianado and also runs the tiktok channel TableTok Games.  

Sam's Sounds - Sam Buckley is our resident muso and part time punk. He will of course now be referred to as the punk pickle.

Lejava Journeys - Tom Lejava is one of my longest serving colleagues and is never happier than when he is on holiday in some exotic destination.  A travel agent was the obvious choice and Tom has the dubious honour of having a name which is super easy to cut out.

Just A Girl - Impeccably attired Elena is honoured on this layout with a fashion boutique specialising in the latest street fashions.  "Just A Girl" is her catchphrase and fits this shop front like a glove. 

Neale's Yard - Sales Director David Neale got a discount warehouse on this layout.  If you look very closely through the open door you will see the man himself pushing the Ark of the Covenant into the back of the warehouse. 

Anisha's Snack King - Anisha's snack drawer is legendary and so having an international snack store was a perfect addition.  If you are the King you need your sign made out of gold... real gold.  I knew I would find a use for that gold leaf I bought from Aliexpress all those months ago.

Loop 3 

Determining the height of Loop 3 was a simple case of tracing between a couple of sections on all three sides of the baseboard scribing a horizontal datum to work to.  On the left of the layout loop 3 climbs up to meet this datum, tracks level across the back of the layout and then falls down more steeply on the right.  The road bed was superglued in place with some MDF supports.

I threw in some track and tested that my engine would fit and with a small amount of support trimming it did.  I then tested that the same fully engine could climb the incline easily with a rake of wagons behind it.  It passed the test sufficiently well for me to continue. 

Using a wooden curve template I drew on the rough arc that the loop 2 tunnel track would take avoiding any of the vertical supports which will form the retaining walls for the loop 3 track. 

Magnetised Scenery

This entire section of scenery needs to be removable yet tie into the layout at each end where the tunnel mouths (portals) are.  This would seem like a perfect task for those tiny but incredibly strong neodymium magnets.   The ones I have are about 10mm diameter by 1mm thick.

The magnets were glued onto small offcuts of MDF on the back of the viaduct facias and matched to magnets on the viaduct supports.

As you can imagine this was a fiddly exercise and I broke the viaduct several times.  I used some car body plastic bumper filler to strengthen the combined fascia structure.

Obligatory Running Video

N Gauge Model Railway - Episode 7 - Laying Track the Bob Ross Way

Documenting my journey into model railways.

The Wait is Over... Time to lay some track.

My Aliexpress order of flexitrack finally came through.  For £15 I got 5 50cm long lengths of really flexible concrete sleeper style flexitrack with gold rails.  Not a huge price difference to PECO track but when you are combining with other orders you can make significant savings on the shipping.

I did not skimp on the points and managed to pick up 2 x ST-5 (RH), 2 x ST-6 (LH) and an SL-E393F short crossing for £50 all in. 

Establishing Loop 2 and Casualties of Construction

Putting in the large Loop 2 was the first priority.  This goes all the way around the layout and through a tunnel / viaduct and allows rail traffic to move between the loops. 

This was also my attempt at laying cork underlay.  I bought a roll of self adhesive underlay (that's not going to bite me in the arse in a few years time, LOL) and cut 1 inch strips which I then cut in half about 2 inches from one end.  This creates a head and two tails which can be more easily bent to conform to the radius of the track. 

I joined two of the flexitrack sections together using the very substantial joiners provided and connected it to one of the RH points.  This established the first run of track on the left side of the layout allowing space for the platforms which will eventually service the station and passengers waiting at loop 1 or loop 2.  Things went swimmingly until I began fixing the track under the elevated section.  I could not get a tool in to drive home the track pins.  

With a sigh I proceeded to rip out the elevated section.  In truth, I was not 100% happy with it and it will allow me to custom cut a roadbase which conforms to the curve of the viaduct and provide a solid mounting surface for the points which will be needed if I decide to put a small siding on the left.  The right side of the viaduct is going to be getting a signal box from which the signalman can see the entire layout. 

The First Rail Disaster!!

Everything seemed to be going according to the vague plan I had in my head until I got down to the return set of points which reconnect Loop 1 and Loop 2.  I think I got mixed up and ended up putting them too low down on the layout.

However, as Bob Ross might say "It was just a happy accident" and chance purchase of the short crossing changed the direction this layout was going in a big way.  Gone was the idea of another set of 4 points connecting loop 2 with loop 3 and back again.  Instead the crossing would permanently link loop 2 and loop 3 in a moebius strip like arrangement.

I'm sure you will agree that this introduces a large amount of fun to the layout and saves me £60 in points that I won't have to buy.  This will also reduce the number of DC controllers I need to buy to have continuous running throughout the layout.  Double Whammy!!

Thanks to this unplanned change the layout lines I had marked on the layout could not be followed and so I strapped on my big boy pants and began cutting underlay and laying track in small sections.  I can always trim it down later.

By now I had pretty much used up all my flexitrack, but don't worry I put in another order a couple of days ago just in case.  

Obligatory Running Video

This weeks running video showing the layout in its new improved Bob Ross inspired shape.

The archway shopfronts have been removed for photographic purposes but don't worry they will make a return shortly.

N Gauge Model Railway - Episode 6 - It's Alive!!

Documenting my journey into model railways.

As I mentioned in an earlier episode of this series, I actually have another loco in the shape of a very battered Minitrix No 201 0-6-0T Dock Tank Loco in British Railways black which I found in a £3 grab bag of toys in a charity shop.

It did work, but not very well, so I had a go at blindly repairing it.  I'm a man, I don't need instructions... how hard can it be?

I killed it...

...or at least I thought I had.  I disassembled the running gear and could clearly see that there was nothing stopping the motor from moving about in the chassis and consequently the worm gear from becoming unmeshed with the drive gear.  Two tiny countersunk screws were missing from the motor plate.

Thanks to the information found on the marvellous site Classic Minitrix I was able completely strip down the chassis and to put it back together with the wheels in the right configuration.  I don't know if this is normal but this little engine uses the wheels and chassis as pickups from one rail and isolators on the axle allow other side of the wheelset to pick up from the other rail.  

As soon as I applied power the motor sputtered into life.

It's not out of the woods yet as it is missing some bits like a buffer, the two tiny countersunk screws which hold the motor in place and both couplers, springs and the plates which hold the whole shebang together.

I'm sure that these are readily available on the internet somewhere like Lendons of Cardiff.

It really does need a lick of paint as it currently looks like a very well played with matchbox car. Fortunately the decals are in great condition so at bit of black enamel and a protective coat of matt varnish should see it back in good cosmetic order.

The Tale of 1,600 Machine Screws

Sourcing the screws to retain the motor was not difficult as there are plenty of eBay sellers offering tiny watch screws.  The challenge is discovering what size screw Minitrix used back in the day when they designed this little loco.  

The answer is M1.6 x 3mm.  I know, because I bought 1,600 countersunk machine screws to try to find two which were the right size.

How does it Run?

Like the clappers.  It's not great at very slow scale speeds but as you can see it flies around the small loop on my layout.  My choice of electrofrog points is causing it to get stuck (hence the speed) but it runs.

Not to worry, there are big changes coming to Upper Carrom so tune in next week.

N Gauge Model Railway - Episode 5 - Can you 3D Print N Gauge Wagons?

Documenting my journey into model railways.

IMHO a 3D Printer is essential for most model hobbyists, they have never been more affordale and easier to use, as long as you have awell ventilated place to put it like a workshop or man cave then you should get one. 

The cost savings of print your own models compared to commercially produced injection moulded kits or ready to run models just makes it a no brainer.

N Gauge Rolling Stock - Thingiverse Thing:6503848

I found this selection of N gauge Rolling Stock models inspired by the PECO wagon on thingiverse and thought I would have a go at building my own rolling stock.  

The kit of parts is great and offers a basic short 4 wheek wagon chassis comparable to the ones I already have in my collection which came with the starter set.  On top of this can be fitted a choice of:

• Box Van
  
• Brake Van
• Cattle Van
• 5 Plank Wagon
• Tank Wagon 

The kit also comes with two roofs for the brake van, and the cattle / box van and rapido style couplers. 

Printing Advice

Supporting the model well is crucial.  I chose to print my chassis flat side to the build plate, but I still added plenty of supports arount the edges, buffers and inside the coupler box to ensure a good print.

The wagon bodies have a short pair of keys which lock into 2 matching slots in the chassis so their is no flat surface and a similar support exercise is required.  The roof is easier to support as noone will see the insides.  The trickiest part to print were the bars on the cattle van, which are really too thin at this scale.  When I reprint my cattle trucks I will likely recreate these slats in thin card.

Assembling a 3D Printed N Gauge Wagon Kit

Assembling the kit is a simple case of adding the couplers to the chassis and sealing the two halves together with your choice of body style.  

Ready to Run models typically have sprung couplers but I had no tiny springs on hand, so created a simple spring from the thin transparent packaging that the wheels came in. 

Cut to size and bent in the middle this provides enough "spring" to keep the couplers level.

The brake van has a specific roof with a stove vent whereas the cattle van and box van have a ventless roof.

What about wheels?

The kit does not come with wheels and whilst I have found some models to print I thought it best to buy these on one of my many aliexpress trips.  

I found a seller offering 48 plastic wheel sets by Evemodel, that's enough for 24 wagons, for the princely sum of £5.49 + shipping.  If you want metal wheel sets they are readily available but obviously more expensive.

The wheels fit neatly into the holes in the axle boxes of the chassis, although I did have to open up the rectangular pockets that the wheel flanges sit in to enable free running and end float.  This was a trivial task with a small needle file, although care must be taken when fitting the wheels to avoid breaking the brake assembly detail. 

Once assembled they look pretty convincing.

How do they run?

Pretty well as you can see in the video below.  The couplers hang down a little, but with the addition of the little makeshift springs I think these will work very well on my layout.

N Gauge Model Railway - Episode 4 - All aboard for Upper Carrom

Documenting my journey into model railways.

It's high time that this layout got a name and it seems appropriate to call it Upper Carrom as it is quite literally above the Carrom Table.

Of course it wouldn't be a real railway station if it didn't have a railway station sign.  There are plenty of places you can download but I wanted to model one myself and the technique I used to make my badges and the famous Okey Dokey sign is a great fit for what is a very simple design. 

Use The GIMP

I have been a GIMP user for many years ever since Photoshop 5 and it is an awesome free alternative.  Yes it has it's quirks but once you get used to them it's pretty much plain sailing and has everything I need in a bitmap image manipulator / Photo editor.

On a transparent layer floating above the white background layer, I added the station name using the text tool making sure that this was 100% black.

The basic name plaque lozenge shape is easy to create using the circle and rectangular select tools to create shapes on seperate layers filled with 100% opacity black.  These were then merged together to create a single "half" which could be duplicated and flipped and then merged to create the whole lozenge.

The middle lozenge was just a repeat of the steps above.  Do not merge the full width lozenges together at this stage.  You shouls have 4 layers (from top down) Text, text lozenge, middle lozenge and finally the white background.  Hide the text layer temporarily.

For each of the lozenges, select the black area and use the select > shrink command to reduce the selection to an appropriate size then fill this with white.  Merge Down the sign lozenge onto the middle lozenge to create a single lozenge layer 

Unhide the text layer.  You should now have a black and white railway sign.  Export this for Tinkercad as a png no larger than 1000px wide.

Finally select in the lozenge layer select everything outside the lozenge using the fuzzy select tool, invert the selection and create a new layer above the white background fill this with black.  Turn off the layers above and export to png.

In Convertio

Convertio.co is a fantastic free web based converter tool.  Just upload the two png files and convert these to SVG.

In Tinkercad

Import each of SVG files you have just created as "Art".  Modify the height of the text layer so that the text and the border of the sign protrude protrudes out of the background.

Export your model as an STL for 3D Printing.  Import this into your slicer (it will be big) and scale to your needs. 

Obligatory Running Video

The first running of the newest addition to the ready-to-run rolling stock collection, a cheap aliexpress Canadian Government grain wagon... it's on loan okay.