Moelwyn Returns!

I'm delighted to be able to report that Moelwyn has returned unscathed from its 800-mile round trip in the post.

Our vintage Meridian-kit model of the FR's venerable Baldwin Tractor has undergone a surgical operation for a motor transplant and a digital 'pacemaker'.

In other words it's now DCC sound fitted.

The operation was carried out by our respected surgeon, Sven, at Tramfabriek, and I cannot speak highly enough about the speed and quality of service we've received.

The Mashima motor which it was fitted with, and which filled all the space under the bonnet, has been replaced with a very small coreless motor, which has left room for the Zimo sound chip and a stay alive pack.

This has historical precedent in that the real Moelwyn had its original petrol engine replaced with a Gardner diesel when the FR was being revived to make it a more economical and useful machine.

The speaker has been lodged underneath the cab roof and is only really visible if you look at the model from below, which few people at an exhibition are likely to do.

The Royal Mail should also get a shout out for safely and swiftly getting Moelwyn there and back.

I did fork out for their premium Special Delivery service but in my view it was worth every penny when dealing with a genuinely priceless model.

Keep an eye on our social media channels and I'll soon be posting a clip of it in action so you can see and hear it in action.

Your first opportunity to see it live will be at the Ayr MRG exhibition in Troon (Ayrshire, Scotland) on 19th / 20th September.

Upgrade Or Replace?

I've been swithering for many months about the best way of getting a 45XX Small Prairie tank for the Minffordd fleet.

First World problems, and all that, I know...

Although outshone in the popular imagination by the Manors, Duekdogs and Collett Goods, they saw a lot of use at the northern end of the Coast line, working from Pwllheli and Portmadoc sheds, and often entrusted with the Cambrian Coast Express.

Right now pre-orders are being taken for a brand new version of these go-anywhere ex-GWR branch line engines from Rapido.

If it's anything like the Highland Railway 'Jones Goods' I already have it will be a superb runner, and you can buy it pre-fitted with DCC sound.

However, I already have a 45XX.

It's one the Bachmann ones which probably date back the best part of 20 years.

It's so ancient - I use the word advisedly - that it doesn't have a DCC socket, but it's a relatively simple project to hard wire a chip and fit a speaker and stay alive.

This was bought second hand a couple of years ago for around £60 if my memory is correct, and it runs perfectly quietly and smoothly.

It's also been factory weathered in truly filthy condition.

Yes, it lacks subtlety, but if I were to chose to go down the Rapido route as well as paying around £250 for a sound fitted example I'd probably want to send it away to get it weathered professionally.

For around half this outlay I could buy and chip and speaker etc for the Bachmann model and for less than half that outlay we'd have ourselves a Prairie, and we could probably get it running for the next exhibition in September.

So there's quite a lot to weigh up.

How much of an improvement over the Bachmann version will the new Rapido one be?

If it's better is it 50% more £ better?

In my position what would you choose?

Mute Moelwyn No More - Hopefully

I am not one of life's gamblers.  

If you needed to stick a label on me it would definitely be the one marked 'Risk Averse'.

So you can probably imagine it was a 'moment' to entrust our precious Moelwyn to the care of our elite posties for a 400 mile trip across the UK to see a man who's kindly offered to help convert it for DCC operation with sound for use on Minffordd.

Were it a model one could buy off-the-shelf then if anything unfortunate happened one could simply curse one's luck and dip into the piggy bank for a replacement.

Sadly, it's not the case with a kit built loco such as our trusty Baldwin Gas Mechanical.

This excellent kit has been in production from time to time over the years, but I reckon I've seen more Backwoods Garratts come up for sale that one of these - and that's saying something!

So it really was a leap of faith to hand that parcel over!

I'm pleased to say it has arrived, safety, and on time  (well done, Royal Mail!) and I'm told it will be going into the workshop imminently.

The challenge with this model is not simply wiring in a chip and speaker - first it will be necessary to make room for them.

At the moment all that space under the bonnet is taken up with a (superb) Mashima motor.

The idea is to replace that with something much, much smaller.  Probably in the shape of a shiny coreless cylinder, which will buy some space for the digital gubbins.

How much space is the question which will only be answered when work starts.

It may be that other places will have to be found to hide the speaker or stay alive as much out of sight as is possible.

However, for now, it's just good to know that we're taking action on something we've wanted to make happen for quite a while now.

I look forward to being able to post progress updates soon.

Stayin' Alive

We're still learners when it comes to this DCC malarkey, and every day is a school day.

Take my favourite loco in the Minffordd fleet, the Simplex Mary Ann for example.

When it was re-motored and chipped for its new digital life we managed to squeeze in a stay alive capacitor which was so effective the loco would continue to run for around 10 seconds after it was picked up off the track.

When he was giving the stock a once-over ready for the trip to Porthmadog last week Himself noticed the stay alive didn't appear to be functioning.

We hadn't noticed any particular problem with the loco at the show in Glasgow.

As usual it was superbly reliable and most problems seemed to be caused by route-setting errors resulting in short circuits. 

We did notice some of the other operators giving it a prod every now and then, but assumed that was just operator error.

It was after a while of puzzling that Himself discovered there is a CV setting on these chips which controls how long the stay alive supplies juice for, and adjusting that restored the function.

It was then that the penny dropped.

Towards the end of the first day at the Falkirk show last year Mary Ann developed a strange fault where all the DCC sounds played but there was no drive.

The solution was to reset the decoder - but we made a bit of a beginner's error!

We thought we had moved every other DCC loco to safety by taking them all to the upper fiddle yard and disconnecting the power supply.

We punched the buttons on the handset to reset Mary Ann and it sprung back to life!

And shortly after, every other one of our 009 steam engines began hissing in unison. 

They had all been reset, too!!

But how? We had disconnected the power supply to the fiddle yard!

It transpired that the joints between the scenic board and the yard were close enough that the rails in the yard were still getting some power.

So that was a fun 15 minutes resetting the numbers on every loco in turn....

It's only now we think back to this incident that we realise the CV to control the stay alive must have been reset to 0 in this process.

So much to learn...

Waiting Its Turn

Moelwyn spent the weekend in Glasgow as a static exhibit, once again, lurking at the doorway into the goods shed.

This vintage Baldwin 'tractor ' - a veteran of the First World War - is a loco we have yet to adapt for DCC control, but I'm hoping that can change in time for the next time we have the layout running in Porthmadog in May.

The difficulty is there is nowhere immediately obvious to stuff all the gubbins - the chip, stay-alive capacitor, and speaker - with it hidden from view.

At the moment most of the space inside the bonnet is taken up by the Mashima motor.

I am told that it is possible to retro-fit a very small coreless motor which will create just enough space to hide all the kit and I am seeking advice from those in the know.

The other question is what to use for a sound file.  

As well as its vintage Gardner diesel engine Moelwyn has a very distinctive, rhythmic whine from its gearbox at speed.  

Again, I have hopes that one of our friends with all the right kit will be able to assist us with this.

How useful Moelwyn will prove to be is an open question.

It's built from a Meridian etched brass kit, so it's not featherweight like a 3D print would be, but it still doesn't have the heft of a white metal casting.

What we do know is that on Dduallt it is capable of hauling a couple of carriages up the hill, which is similar to what Britomart can do, so hopefully on Minffordd it will be able to drag a couple of wagons at a time up the ramp from the depths of the yard.

Hopefully, before to long, we will be able to find out.

This Is Spinal Tender

More fiddle yard roads on Minffordd means room for more trains, which means we need more locomotives to haul them.

Now that's the definition of a virtuous circle for a railway modeller if ever I heard one!

So for the Model Rail Scotland show in a couple of weeks we're augmenting our fleet with another Cambrian stalwart, a Standard 4MT tender.

By happy coincidence it is a loco which spent around six months based at Machynlleth between 1962-63 so it no doubt passed through Minffordd many times.

This pre-loved Bachmann model arrived in Santa's sleigh a couple of months ago and has been waiting in the queue to be chipped and speaker fitted.

And what a speaker!

I'm still a complete novice about this DCC business so I rely on some expert friends who recommended what looks like some kind of miniaturised subwoofer which just about squeezes into the tender space.

My friend said it would be loud - he wasn't exaggerating.

That's probably no bad thing.

At the first two shows we've taken Minffordd to we've been positively deafened by DCC diesels on neighbouring layouts, with owners of whistling English Electric types who like to turn to volume up to 11.

Well, now we can play them at their own game if it happens again

Getting It Straight

When we set out to make Minffordd it was with the intention to make as much use of ready-to-run rolling stock as we could.

That may seen an odd approach for a layout team best known for amassing a huge collection of kit built and scratch built stock but we wanted to get it made as quickly as we could.

Wanting to have DCC sound on the layout was the other major consideration - so much easier with RTR!

However, there were still some locos which required some serious hacking about to be correct for our era, and one of them was Prince.

The era we are modelling Prince in the 1960s is the period where 'The Old Gent' was going through something of a mid-life crisis.

He hadn't yet started bulking up on the steroids - that came in the 1980s - but to try to keep up with the younger Ladies who appeared on the railway the decision was made to strengthen his frames and take out the classic step up beneath the saddle tank.

This look, which lasted for less than a decade, wasn't included in the 'tooling suite' for the Peco / Kato Small England so it was necessary for us to take the knife to it.

The good news is that the body breaks down into sub-assemblies, and the frame is one of these.

It was a relatively simple job to chop out the stepped-up section and join the two halves back together with some thin brass strip and fix the saddle tank section back on top.

To be completely authentic we also filed away the ballast weights in front of the smokebox and the resulting hole was disguised with some brass shim.

As the loco had to be completely disassembled in any case to hard wire in a DCC chip it didn't mean that much extra work.

Prince has come to be perhaps our most essential locomotive for operating Minffordd Yard because - on account of his traction tyres (I might have been wrong about those....)-  he's the only loco which can haul a full rake of wagons up to the Mineral Line,  all the rest have to drag them up a couple at a time and assemble the rake in the siding at the top.

More Wickham Trolley Testing

 Our little standard gauge curiosity has been undergoing some test running on Minffordd.

It's coming up to two weeks since our sound-fitted Wickham trolley broke cover with a little video I posted on our other social media feeds of it having an initial test run on one of the club layouts.

It's certainly attracted a lot of attention with the clip having been played more than 50 thousand times on one site alone as I type this!

Although the chip and speaker were as effective as we'd hoped it was clear there were some mechanical tweaks needed.

Traction troubles

These ingenious Bachmann models have the drive hidden in the truck behind, but only one axle - the front - is powered.

On this first test we could see it was struggling to cope with anything beyond billiard-table level track, and on rising grade, on a curve, would slow to a halt with the wheel spinning, and indeed lifting itself up off the track.

Something that tiny is never going to be very heavy so the wheels on the geared axle are fitted with traction tyres, but Himself suspected perhaps this had lost some elasticity - and grip - over time.

The excellent Bachmann Spares website doesn't list traction tyres as an item, but you can buy replacements for the complete front axle, which we did, but replacing them is quite a tricky job because the drive train is packed in there like a watch mechanism!

The other thing we've done, taking a tip from discussion on a forum about these models, is use some lead sheet to make a 'tarpaulin cover' for the ballast load which adds a precious few grammes of mass but enough to keep that powered axle in contact with the rail.

The trolley has now run successfully around the layout, coping with the grades on the main line and also the ramp up into the exchange yard.

It's also had a Modelu crew fitted which will hopefully draw the eye and disguise where the speaker, chip and stay-alive have been hidden.

Here's a clip of it having a test run on Minffordd earlier today.