When the dust settled

I left off the blog at the point where I had got the layout running again after the dust had all been cleared away. But summer intervened, and it’s taken us a long time to get back to the train set again. And at first it seemed like we were going to have all sorts of problems – the first three locos I tried to run all had problems of one sort or another – which I put down to poor conductivity on the rails. Then I came across one of my son’s star locos – a Hornby class 08 diesel model (an R156). And it sped around the track like there was no tomorrow! (Not bad for a shunter which according to some sources was only supposed to run at 20 mph in real life!).

Hornby R156 - a Class 08 Diesel

Now one difference was that the diesel had been kept out of sight in a storage drawer. It is also one of the more modern models, and one of the more recent additions to our collection. So the problem seemed to be more with the locos than the rails. I thought I would test the power running through the rails at different points using a small cheap multimeter I had picked up from Maplin for about a tenner. It’s a mysterious gadget if your knowledge about electrics is as rusty as mine is! But I managed to get consistent readings of 13v pretty much anywhere I tested (using a straight 12 V input from a small transformed rather than the Hornby power control equipment). It was much later that I worked out that I should have been testing current in amps, not the voltage! In any event it persuaded me to look harder at the loco’s rather than the rails.

So I picked up the Eddie Stobart loco intending to add a little more oil to see if that would improve things. But before I could do that I noticed the state of the wheels – filthy! And sure enough the wheels on the other locos’s were all in a pretty poor state too. So there we were on Saturday afternoon. Mum was out at the shops, Al had finished his homework and E had been to ballet and gotten back again. “What are your doing, Dad?” they asked, and soon enough, all three of us were sitting around the breakfast table, fully engaged in our Railway Maintenance Working Party. Each of us worked on the wheels of a different loco, just rubbing them gently with a paper tissue; a pile of blackened tissues as testament to our work. Mum came back, so we only had a quick chance to do some test running – and what an improvement.

A Shower of Debris

I have spent a lot of time recently clearing our loft to allow new insulation to be laid, and the insulation installers finally arrived last week. They were also filling our cavity walls, and about the first thing they said concerned our train set layout. “That will take a bit of moving “.

Our train set is set up in our garage, and I hadn’t expected them to try and do anything to the garage wall. However they had other ideas. They wanted to drill two holes just above the layout. “Just be a bit of dust”, they said. I didn’t believe them!

As fast as I could I removed all the rolling stock, then the few buildings we have on the layout. Next came the track supports for the elevated section my son had constructed. Finally I went back and removed the two level crossings, and then all he end tracks with buffers. Finally I felt there was nothing they could do much harm to by leaning over and on to the layout. I still covered it with a dust sheet. And then, they drilled two holes before declaring the wall in question was a single skin without any cavity to be filled; it had all been a needless waste of time. But with just two test holes the brick dust still went everywhere. In the end I had to use a vacuum to try and brush it all up.

So today I finally managed to put everything back. And in doing so came up against one of those intriguing aspects about train sets I hadn’t really understood as a child; the importance of track geometry. I discovered that we had somehow put in a single straight section (R600 length 168mm) instead of two quarter length straights (R610 length 38mm). Now those of you quick with maths might notice that 4 times 38 doesn’t equal 168, so why they are called quarter straights is a bit of a mystery; as is the absence from the catalogue of a half straight.

The impact of this extra 92mm of straight meant that the curve of the track at one end didn’t follow the printed image on the trakmat, and extended right to the edge of the mat. Probably more importantly, it also puts strain on the junctions of the track pieces, opening up gaps between the track which causes the train wheels to judder and reduces electrical conductivity. The current should still pass through the rail joiners, but it must be a better connection if the track itself joins up.

So what this shows is that the track itself appears quite flexible – you can make the track link up even if you are not following the official geometry exactly; but only do so at your peril! The more you diverge from the geometry, the more difficult it becomes to link up other sections, the more likely you are to have derailments and crashes because of the gaps between tracks, and the more difficult it will be to get your electrical current flowing freely throughout the layout.

Aussie Rules!

I've always found the website at www.modeltrains.net.au/Hornby to hold a wealth of information about Tri-ang and Tri-ang/Hornby models, much of it very hard to find from somewhere else. So I was really pleased to be able to provide them with some of the details of the Overhead Power system which they didn't have. And now Andrew over there has placed a link to this blog - which is really kind!.Thanks you, Andrew. Just goes to show, we might not agree on Cricket, or even how to play football, but Aussies and Brits can work together on model railways!

A Lofty Find

I was clearing out the loft over the weekend and came across a box of train bits and pieces. Mainly it had lots of empty boxes, but in amongst them I was delighted to find a Tri-ang instruction leaflet on the Overhead Power Supply system. I wish I had had it when the R257 wasn’t working! Anyway, here is one of the illustrations which shows how the catenary system works better than I could!

The leaflet is actually based around the first catenary system Tri-ang introduced. This has catenary wire made to look like its suspended from a curving cable. The Catenary we’ve got is just a single, plain wire. However from what I’ve seen, the rest of the system is just the same.

Eddie Stobart Hauler video

Here's a video of the Eddie Stobart Hauler running on our layout. As you can see we are still experimenting with the video technique! 

Al’s first model train set

The first train set we got for Al was – of course – a Hornby set. In the UK, “toy” trains and Hornby are synonymous. (Yes, “toys”; since Al was only about 4 year old). Hornby sets are available from all sorts of retailers, in real shops, as well as online, and of course in specialist model shops. We went to a small model shop with an upstairs dedicated to sets. Sadly this shop went out of business a few years ago. They were specialists and stocked other makes of train. Names which at the time I hadn't heard of, such as Bachman. You see this was a “model” shop, not a “toy” shop, and if you haven't found out yet there is a big difference between the two.

Hornby's Eddie Stobart Engine

The set was a great success with Al. He had seen a model train loco at his grandfather's and that got him asking about train sets. We found some of my old set – but this train set was his very own. The set we bought for him was Hornby’s R1061, Eddie Stobart Hauler. I think my review score of it would be “mixed”; it has a great little engine which is still one of the fastest in the family collection; it was an “operating” set – in other words it does more than just go around the tracks; and all of Hornby's train sets are great value compared to buying the individual components. 

  

I think Hornby is in a bit of a fix. It’s managed to build a great revival in its fortunes since the decline of train sets forced the previous owners to give up, and the company which is now Hornby Hobbies was formed. They built that revival, partly on moving manufacture to China, but also on higher degrees of accuracy. They shifted their market focus to adult buyers and away from toy trains. Many of their models are now highly detailed, and they work hard to be true to the original full size versions (what the modelling world calls the “prototype”). And of course adults have more money to spend!

Hornby's Eddie Stobart Goods Container Wagon 

 What I think they have missed is that adult modellers have usually started out as children playing with toy trains. Much of their catalogue is too expensive for kids – in fact even their catalogue itself is pricey on a pocket money budget. They have thankfully introduced the Railroad range in the last couple of years – which is going in the right direction.

  

  

Hornby's Eddie Stobart lowmac wagon

So for me the downsides of the Eddie Stobart set were firstly, the branding itself –Hornby and Stobart chose to use their original c.1950’s branding - but it certainly isn’t the brand image which the kids see on every motorway journey these days. Then there are the wagons – the lowmac and the bogie wagon are both low profile models which feel fairly delicate and are often a fiddle to place correctly onto the tracks. 

  

Finally the operating tipper is a clever piece of engineering, designed to have one edge tip up and unload a pile of – pretty unconvincing – “logs” over the side.  In order to drop over the side, the side rail has to rotate out of the way. But the hinge arrangements are incredibly fine pieces of plastic. With a bit of less than gentle handling, the side comes off, and its then quite a challenge for a child to put it back correctly.

But despite my whingeing, the set has its strong points as well. The inclusion of the Hornby TrakMat I think is a really great invention. It immediately transforms the track into a fantasy setting. It helps you visualise the setting of the railway – the platforms, the engine sheds, and the roadways to service the railway. And the little Eddie Stobart Loco, as I’ve already said, is still one of the fastest in the family collection. So we still look out for the Eddie Stobart lorries on the motorway as we travel around the country, and as we see them, every one is a reminder of the train set waiting for us to get back home again!

Train delayed - Haggis on the track!

We survived the Burns Night, but our test layout didn't. (It was after all on the dinner table, and I didn't think it was quite up to hauling the haggis around the table!). I did manage to catch a few quick camera shots, before it all disappeared. 

Tri-ang R257 on straight section showing catenary

 The first pic shows the train on a straight. You can see how the catenary (overhead wire) sits nicely over the middle of the pantographs. The trouble starts when you drive your train around the bend. 

diagram showing how straight catenary would run on
curved track

Here is a diagram drawn using XtrakCad which shows how a line drawn from centre line at one end of a curve to the centre line at the other end (the black line) actually veers off to the inside of the curve.  The pantographs won’t be able to reach across to this line and so won't collect any power. One alternative would be to split the curve into two – see the red lines. But even this line gets close to the edge line of the pantograph. (This would be the equivalent of the Marklin recommendation for a post every 22.5°).

Tri-ang R257 on curved track showing catenary

The second pic shows the train on a curve. You can see how close the wire is to the edge of the pantograph (where I have added a small yellow arrow). What happens in practice is, unless you get it right, the pantograph slips off the wire. As it is sprung, it extends to its full height, and often continues to pick up power by scrapping along the side of the wire – until CRASH – it hits a post.

As you can see from the video of a couple of posts ago we did manage to get it right. First I had to straighten the individual strands of wire I had bent as a kid. One trick I picked up on the internet was to roll the wire – this shows where the bends actually are. It's quite a painstaking job to bend them back. Our test circuit was built using Tri-ang R483, first radius curves, with three straight sections (R480/R481) on either side of the oval. Without getting every “straight” section of wire really straight, the wire didn't quite meet in the middle. In the end I was able to ease some sections of the wire apart inside the connecting clips. This isn't ideal of course – but it worked!

Tri-ang catenary mast (R419)

One other problem I had was with the mast clips – the little pieces of nylon which hang down from the top of the post. Here is a picture of one of the problem mast clips - if you look carefully you can see the wire is sitting behind the clip. The idea is that you push the wire up into the clip and the nylon springs closed around it, leaving the bottom edge free to touch the pantographs. But several of my old masts - like this one - had clips which just pushed the wire back out and wouldn't grip it. If anyone has any ideas how this might be solved I'd love to hear them.

We now have to work out just how to link in a Tri-ang overhead powered track section can fit into our main layout. We'll let you know if we solve that one!

And in the meantime, the words of Rabbie Burns’ Address to a Haggis are still ringing in my ears – “great Chieftain of the pudding race” – the proof of our pudding was watching the R257 zip around the track using overhead power with head lights blazing!