CazRail

So Ive gone ahead and pre-ordered myself a Linda. My first 009 item, and to be honest, never expected to be getting anything 009, but with it being so local, it's a must have!

Ive got an idea to model the Hen Durnpike crossings in Tregarth area of the 'mainline', but Ill have to dig out the video for my inspiration!

Ive always had a urge to model Porth Penrhyn, now I've got an excuse to...

Work-worn Linda for me!

My EWS MHAs arrived this afternoon, and as per my other purchases from Accura in the past, very impressed. 

Very happy, and can't wait for my other pre-orders to arrive! 

8 hours ago, McC said:

look superb!

we actually might have something to help that tail lamp quite soon too!

Thanks! 

Looking forward to see what that might be!

I decided to paint the wagon by hand last night, without treating the print with any filler, and I'm very happy with the result. 

Painted in Revell No9 'Anthracite'. I used this colour as opposed to black, after watching 'Wallsrail' on YouTube, who refers to it as 'not black'. I've used it as he says, and I totally agree, black is too harsh a colour on a model.

Ive fitted the wagon with Accurascale's excellent Oleo OP12 buffers with 16" heads.

So for me, design work is done, and this wagon will now  become 12106.

In the next 'batch' I will modify one, to include a flashing tail lamp. This will involve cutting off the bottom of the rearmost chute and hiding the gizmos inside.

Now to print the other 16....

So here's 12102!

Nothing currently glued on it, just dry-fitted so it can be disassembled for paint. 

On 04/10/2022 at 22:12, aasmall said:

Hi,

 

Nice models and great work!

 

stenson models make the suspension castings too as a replacement for the Lima PCA but the stenson ones give sprung axles. I found that some of the shapeways prints can be distorted slightly and tend to replace the suspension with theirs. 

 

for finishing 3D prints I’ve used Mr Surfacer 500 to take away some of the graininess.

 

looking forward to seeing the final result!

Thanks for the kind words! And for the advice on finishing too, which I will definitely look into!

Many thanks!

So an update, the third print will arrive tomorrow, and depending on how the chassis have come out, it'll be the first complete wagon, and will become 12102.

I have been in contact with Railtec to create me some transfers, so hopefully will come up trumps.

This print will be painted up regardless, using Revell No; 9.

A few more mods done to the chassis, as I opted to use 51L's pedestal suspension units for these wagons (part ABWC008). This has involved extruding the wheel holders inwards 1mm. whilst removing 1mm from the outer face to accommodate these suspension units. This puts them about the right position, as the did stand proud of the chassis solebars on the real thing.

Also seen in the screenshot, I've added some brake lever detail.

Another test print ordered, hoping this wagon will end up being 12102.

Time for an update!

This morning, a parcel arrived from the 3D People containing my latest 'sample', so I set about putting it together...

So this test print has the more detailed chassis, walkway, ladder and end skirts. It's gone together really well, with only a couple of adjustments to be made for the next print. I need to open out the holes that take to walkway and ladders to 1.5mm, tweak the brace on the skirts, as well as the opening for the brake equipment on one of the skirts.

I will now crack on with finding suitable brake leavers for this wagon, or make my own.

This looks very interesting! Pretty much same era as mine, so following with anticipation!

To be honest, Im not sure. I've never really gone back to change any dimensions with it, as Ive mostly been working off engineering drawings so using the given dimensions.

As far as software goes, I also use DesignSpark Mechanical. My reason is I got used to SolidWorks during my time in school and college, and I find it is very similar. I also find it's easy to use, especially if youre following an engineering drawing, as when you draw a shape, you can enter the dimensions you want, likewise when extruding a shape.

So, kicking on from the last prototype, I've gone ahead this week and created the remaining major parts to be 3D printed, including the parts I had intended to etch. I've also added locating holes on the hopper bodies to take the walkways and ladders. 

I've created a parts list below as a summary for the parts needed for each wagon.

Obviously, each wagon will not require all parts, for example only 11 of the 17 require the skirts, each of which is different on them wagons. Each wagon requires 2 sets of ladders and walkways.

I've also ordered each part for a second prototype, which will test the details I've added, and the fit of each component.

4 hours ago, Mark Saunders said:

There was a period when they were running out of North Blyth, possibly late 1970’s.

I didn't know they worked to North Blyth! Thanks!

Managed to do some more to the body CAD today, adding the end support struts...

Next on these bodies will probably be locating lugs for the walkways and ladders.

The chassis also got a bit of attention tonight too, mostly improvement work from the first print which were chamfering the inner hopper support, adding thickness to the wheel holders and adding various details.

Details added include foot steps, chassis ribs, and brake cranks and cylinders.

21 hours ago, Michael Hodgson said:

Don't recall ever seeing these wagons, but an attractive prototype, and the model looks great so far.  The most significant omission that strikes me as not having been mentioned so far is those simple struts supporting middle of the hopper ends.  I assume you'll be doing those with the walkways as part of the etch?

The plan is the support struts will be added to the main body, and will be on the limit in terms of minimum wall thickness, which is 1mm.

19 hours ago, PaulaDoesTrains said:

 

For FreeCAD you'll need to install the Sheet Metal workbench. There's a good tutorial about it here

 

Thanks! Ill have a play about with it later.

Small update, I added various components to the model, basically buffers and suspension units I had in stock. I also added a Symoba kinematic NEM pocket at one end.

The buffers appear to be the correct type for the wagon, so I will order more in due course.

The pedestal suspension units used are Cambrian ones, but I will make my own on cost grounds. 

I will use the Symoba coupling pocket to get dimensions for adding a NEM coupling pocket to the CAD, which will just be a fixed unit.

2 hours ago, PaulaDoesTrains said:

 

That's not a program I'm familiar with. In terms of what capabilities you'll need I think that depends on the complexity of the part you're trying to make. If it's a simple plate-like structure then a drawing package 9e.g.,Inkscape) would probably do the job. If there are any folds then a CAD package which supports sheet metal design (such as FreeCAD or Fusion 360) is probably the best way forward IMHO.

Thank you! Ill have a look at them software, I'm sure I have FreeCAD already installed. I'll give it a go.

3 minutes ago, PaulaDoesTrains said:

Aren't you using a CAD package already to design you 3D printed parts?

Yeah, I'm using DesignSpark Mechanical.

A quick question!

I've now decided that the ladders, walkways and end skirting will be made with metal etch, can anyone point me in the right direction in terms of CAD software or someone who could do the the etching please?

Ive decided to 3D print the brake equipment, which will then simply glue into position.

tia

Carwyn 

Thanks, Paul.

So here's an exciting update, Ive received the first prototype of the chassis and body! 

A few changes to make on the chassis, improvements rather than mistakes, including adding additional detail, beefing up the bearing holders and adding pedestal suspension unit detail. 

The body will now be measured to add holes that will hold the ladders and walkways, which I envisage to be etched components. 

A small update...

I've now sent for the chassis and a hopper body to be printed, so I can then have a physical model to be able to make the process easier. I'm hoping, so long as my measuring is good, that I'll have a rolling chassis from these, allowing me to measure up to add a coupling pocket onto the chassis, and to plan ahead for the various ladders, walkways and other various details. for ladders and walkways, I'm currently pondering about custom etched parts as they will be finer than what is achievable with 3D printing.

I'm also struggling to design the skirted ends, despite me having managed it in the past, but with these also being a prominent feature on the ends, I'm also considering these to be etched parts as well.

Any feedback would be appreciated.

In the mean time, I've put the chassis and one of the hopper bodies into an assembly on the CAD, and it looks a bit like this...

Looking quite encouraging so far.

Thanks

A little progress this lunchtime. I've progressed the chassis CAD a little today, by adding holes on the buffer beams to accept buffers and coupling hook, and the beginnings of the wheel holders.

The main bit of progress though was the creation of the hopper body, by producing a basic master, onto which I can add the variations the wagon had. Currently, the variations I've made are for standard vent positions(vents at opposite ends diagonally) and mirrored vents(both vents at one end of a vehicle).

Next job is to duplicate both of these versions in order to create the skirted versions.

Now for some nerdy info regarding some detail differences...

The wagons were numbered in the BRT121XX range, from 12100 through 12116.

Of these, 12102/03//06/11//12/15 had no end skirts fitted(as CAD above), with 12112 having the mirrored vents arrangement.

12100/01/04/05/07/08/09/10/13/14/16 were fitted with end skirts, of which 12108/09/13/14 having mirrored vents.

Various other differences between wagons were extended walkways, positions of document clips, sole bar steps and position of latches.

As far as detail differences go, the only variations I will replicate are the skirted/non-skirted versions and position of the vents. To me, the rest are not worth the effort to cater for.

1 hour ago, PaulCheffus said:

Hi

 

Would the drawings be resealable to 1/148 as I also would like a rake of these wagons for my Woodhead based layout. I do have a 3D printer so could print the items from the design.

 

Cheers

 

Paul

I'd be more than happy to try this. Possible problems could arise with wall thickness and the capability of printers, but it's certainly worth a shot.

Here's the progress I've got to so far on the new CADs. Using the drawings provided by @bazjones1711 above, I've created the basic chassis.

Then an hour or so later, refined a bit.

4 minutes ago, bazjones1711 said:

here are some 4 mm drawings of the wagon , also listed is the modified version

http://www.barrowmoremrg.co.uk/Colin_Craig/Pxx/PAB_Pet_Coke_Covered_Hopper_Wagon_PA007A_2.pdf

Thank you very much! This will be invaluable, really appreciate.