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Alan's Workbench

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Posted
5 hours ago, Tullygrainey said:

I've looked at CSB but I've yet to try it. I find it hard enough to fit a single compensation beam between the frames as it is. As well as getting it in the right place!

When done properly, it takes up a little less space than compensation, and leaves more room for inside motion.....

Posted

Casting around for something to do at the weekend. 

I'll need a few more bits of rolling stock for Kilmore. I made these moulds from plasticard and brass masters a few years ago. 

IMG_3662.thumb.jpeg.f5cc4d3aecef67aae6a415971ae76dc3.jpeg

 

The trick is to pour just the right amount of resin into the mould so it's fully filled but doesn't rise above the level of the top of the mould. I haven't mastered that yet so these castings need a lot of work with files before they can even be glued together to make a reasonably square wagon body. Provincial Wagons this ain't!

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Making the body is just the start. Chassis are the next challenge. In the past I've used hacked Dapol kit chassis and sprung etched brass kits from Brassmasters. 

In the case of the BCDR stock, outside W irons are an added hurdle. Currently, I'm using bits from MJT wagon compensation etches to make these but it's challenging, very time consuming and uses only a few modified bits of the etch and not in the way intended. Also, what's left of the etch isn't much use for anything. 

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There must be an easier way!

Alan

 

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Posted

Lovely work. It’s going to be great to see a full rake of wagons running on the layout at future exhibitions. 
 

I have seen a sheet of outside W irons created by joint effort of modellers Gareth, Kieran and @Patrick Davey(?) a number of years ago on plasticard. 
 

If ever an etched sheet was to be produced on brass, containing only the outside W iron, I would definitely put my name down! 

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Posted
13 minutes ago, Dunluce Castle said:

Lovely work. It’s going to be great to see a full rake of wagons running on the layout at future exhibitions. 
 

I have seen a sheet of outside W irons created by joint effort of modellers Gareth, Kieran and @Patrick Davey(?) a number of years ago on plasticard. 
 

If ever an etched sheet was to be produced on brass, containing only the outside W iron, I would definitely put my name down! 

Nice to be thought of as being capable of this sort of precision Nelson, thank you, but I wasn't on this team 🤣

Posted
48 minutes ago, Dunluce Castle said:

Lovely work. It’s going to be great to see a full rake of wagons running on the layout at future exhibitions. 
 

I have seen a sheet of outside W irons created by joint effort of modellers Gareth, Kieran and @Patrick Davey(?) a number of years ago on plasticard. 
 

If ever an etched sheet was to be produced on brass, containing only the outside W iron, I would definitely put my name down! 

Me too Nelson!

Posted

It’s quite possible to get that sorted. I have used 4D modelshop in London to draw up etches for me. If a few of you were chipping in that would be a cost effective way of paying off the design fee. I have no connection with the firm but they did me a fabulous job. Results of which I hope to post soon….

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Posted
53 minutes ago, Galteemore said:

It’s quite possible to get that sorted. I have used 4D modelshop in London to draw up etches for me. If a few of you were chipping in that would be a cost effective way of paying off the design fee. I have no connection with the firm but they did me a fabulous job. Results of which I hope to post soon….

I'm happy to do the artwork if you can provide a sketch of what is required.

Although 4D Modelshop has withdrawn from the bricks&mortar shop business, Iain is still offering custom etches on the same basis as before. 

Quote
 
Artwork 
From:artwork@modelshop.co.uk
To:Paul Molyneux-Berry
 
Fri 25 Jul at 11:16
 
 

Hi Paul,

 

The new company will be called “Arch 60” and you can still use this email for all enquiries. We will be fully operational from the 1st August.

Please send through any enquiries you have.

 

Kind regards,

 

Iain

 

 

 

Arch 60

The Arches

120 Leman Street

London

E1 8EU

 

Direct: +44 (0)20 7264 1295

Main: +44 (0)20 7264 1288

Fax: +44 (0)20 7264 1299

 

 

 

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Posted
55 minutes ago, Mol_PMB said:

I'm happy to do the artwork if you can provide a sketch of what is required.

Although 4D Modelshop has withdrawn from the bricks&mortar shop business, Iain is still offering custom etches on the same basis as before. 

 

 

 

That’s a very generous offer Paul. Will be in touch. 

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Posted

Fine work Alan.

 I think doing your own resin castings has lost out to 3D printing of late. Nothing wrong with the latter of course, but you don't need to know CAD to make a plasticard master, while materials to make the mould and the two part resin kit cost a lot less than a 3D printer.

 Add in the fact that a casting sets in well under an hour and if you want say, a rake. of wagons then taking the trouble to create masters for one side and one end has much to recommend it in terms of both time and money.

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Posted (edited)
23 hours ago, Tullygrainey said:

That’s a very generous offer Paul. Will be in touch. 

I was just having a look for photos of the prototype and found these, I assume this is the type of W iron you want:

https://www.flickr.com/photos/irishrailwayarchive/53508778884/

https://www.flickr.com/photos/irishrailwayarchive/54253146283/

https://www.flickr.com/photos/irishrailwayarchive/53507575592/

https://www.flickr.com/photos/irishrailwayarchive/53507575597/

https://www.flickr.com/photos/irishrailwayarchive/53501071339/

https://www.flickr.com/photos/irishrailwayarchive/53508981899/

Whilst similar in style, this one is different in proportions:

https://www.flickr.com/photos/irishrailwayarchive/53570644793/

 

Edit: this looks like the right type of W iron but the wrong railway. It's a good closeup though:

https://www.flickr.com/photos/irishrailwayarchive/53507575262/

 

Based on your existing model, I assume you don't want a hole in the W iron to locate the axle bearing, because that will be in the cast axlebox.

Any preferences on material (brass or nickel silver) or thickness? 

I can probably scale dimensions reasonably well off this photo, can you confirm the wheelbase of this wagon type for me to use as a basis for scaling?

https://www.flickr.com/photos/irishrailwayarchive/53508778884/

 

Might be worth thinking if there are any other useful bits for these wagons that could be added to the etch...

Edited by Mol_PMB
marked in text
Posted

I'll need to get a log on for flickr in order to see those pics Paul. I'll have a look tomorrow. As regards material, either brass or n/s would be fine. Thickness would need to be sufficient for half etched rivets. I think the average for etched kits is around 15thou, in old money.

 

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  • 2 weeks later...
Posted

I want to create a Permanent Way formation for Kilmore so an unsuspecting Parkside kits LNER 12T LowFit wagon (Parkside PC66) which I built a few years ago was selected for butchery...

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Original brake gear and levers removed, then some fabricated W irons and bits of scrap brass etch added...

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Transfers from Railtec...

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Then some weathering and a suitable load.

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Posted

More work on rolling stock for Kilmore - some chassis for my resin cast BCDR vans and brake van. These are made from the core bits of some Alan Gibson etched brass wagon chassis kits adapted to fit inside the bodies. They're compensated with one fixed and one rocking axle. Painted black, they will do the work whilst being all but invisible behind the cosmetic outside W irons to be fitted onto the bodywork (see photo in 13 October post above).

It works fine but it's just another of the compromises involved in modelling Irish stock in OO gauge.🙄

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4 wheels on my wagon(s)

  • Like 7
  • 2 weeks later...
Posted (edited)

The fitters at Kirley Junction are up to their eyes at the moment so CME Kieran Lagan asked if I'd like to have a go at the chassis of a NorthStar kit of some vintage which he acquired at the Bangor show this year - a GNR(I) PPs in 4mm.  Yes please 😄

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Nice crisp etches and with all the bits needed bar motor and gearbox. Much more than just a shrunk 7mm kit, this has been re-engineered well for the smaller scale. Chassis spacers for 16.5mm and 21mm among other things.

In keeping with tradition, we added a High Level Roadrunner+ with a DriveStretcher D1 to help push the motor forward into the boiler and clear of the cab.

Rather than gluing the shafts in place as the instructions suggest, I took a risk and soldered them after an unfortunate incident with the gearbox I built for Kieran's other purchase, a GNR(I) AL class kit.  An idler gear ended up in the ballast after a layshaft came adrift😳

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The frames have no real straight edges which made it tricky to build the chassis straight and square. They're also pretty flimsy and easily bent.

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I added hornblocks to the front coupled axle and had then to arrange a beam for this to rock on. A chassis spacer with a length of 1mm brass rod soldered into it did the job. The pics below shows the arrangement and the chassis sits nice and level.

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The bogie is arranged to swivel on a vertical pillar attached to the chassis. I've soldered a long bit of 0.45mm brass wire to it to act as a centring spring. The other end of this fits into a hole in that chassis spacer. We'll see how well it works.

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Running plate made up and fitted to give some idea of where the pickups might go without fouling the bodywork - always a nightmare. This is another flimsy bit of metal which won't be strong until the bodywork gets built onto it.

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Next jobs are to fit the crankpins, add the coupling rods (These are already made up and were used as jigs to set up the hornblocks) and see if we've got a free rolling chassis. 

I could develop a taste for these GNR(I) engines. Don't let on to the folk at Queen's Quay.

Alan

 

 

Edited by Tullygrainey
typo
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Posted

Alan, that’s some very nice work indeed. It’s great to see how you have arranged the compensation and the motor/gearbox too. 
I look forward to following your progress with this. 

  • Thanks 1
Posted

Fab work. Having built the 7mm version I agree it’s a nice kit. And you’ll make a great job of it! Will look well running a diverted train through Kilmore :) 

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