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No.2 Coaling Plant - Scratchbuilding. - More Practical Help - Your Model Railway Club
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 Posted: Sun Dec 19th, 2010 11:10 am
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Perry
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After carrying out research on the internet and in various books, I have decided to scratchbuild a No.2 Coaling Plant. I was fortunate enough to find plans and photographs that should provide sufficient information to allow a reasonably accurate model to be built.

I printed the plans and then resized them on a photocopier to give me a 2mm=1ft scale drawing; half actual size. It is then simple to take measurements from the drawing in millimetres and double them to give the dimensions of the part being fabricated. I expect to have to make small adjustments of a few millimetres here and there to cater for the thickness of various materials, but the overall appearance and proportions should be pretty close to the prototype.

A coaling plant is basically a simple series of box structures set on legs, so it should not be too difficult to construct.

The wooden frame.

 I didn’t fancy making up square section legs from plastikard. It seemed a waste of time and material, so I opted for 6mm square stripwood.

Four pieces, each 220 mm long, were cut to form the legs of the structure. Four pieces, 148mm long, were cut to form the main longitudinal bearers and four more, 60mm long, for the transverse bearers.

A line was marked around each leg 64mm from the bottom end. This will be the lowest level of the loading platform over the coaling road. The top bearers will be attached flush with the top end of the legs.



 
The pieces of wood were glued up using impact adhesive, ensuring all the joints were square. The joints between the pieces of wood will eventually all be covered with plastikard so this should be sufficient to reinforce the simple butt joints.



The main carcase of the structure will be made from 0.040" plastikard.
Perry



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 Posted: Sun Dec 19th, 2010 01:36 pm
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ddolfelin
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I think you could have a career with IKEA, Perry.



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 Posted: Sun Dec 19th, 2010 06:48 pm
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Stubby47
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Is the main body of a No. 2 Coaling plant made from plain slabs of concrete ?
If so, and seeing as you're almost a full convert to card modelling ( I'm citing your recent foray into oil tanks as an example), you could use the excellent Scalescenes concrete prints over a card body, rather than plasticard...
Stu



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 Posted: Sun Dec 19th, 2010 06:53 pm
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Perry
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The platform base and lower cladding has been constructed and temporarily fitted:



The two coal chutes form a unit that fits above the platform. It's quite a complex shape, so I thought I'd save time and material by designing it using Sketchup 8. http://sketchup.google.com/ I can input the important (and known) dimensions, and this clever little freebee will work out all the other dimensions, angles, etc. of all the required panels. The only thing I need to bear in mind is the thickness of the material I'm using and make adjustments accordingly when cutting out.

Here are three views of the assembly I need to build:







By loading the saved design back into Sketchup 8 I can measure any given dimension quickly and easily. This is a superb tool for scratchbuilders.

Hopefully I will continue construction tomorrow.

Perry



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 Posted: Mon Dec 20th, 2010 10:33 am
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Perry
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Work has begun on the twin coal chute assembly.

I constructed a false 'floor' for the bunker and added side panels wich will facilitate locating and fixing the assembly in place when it is complete.

The corners were cut away to fit around the legs. This will also be done to the chutes at a later stage.

Marking out and cutting the various angles for the panels was a breeze using the Sketchup 8 plans. The following picture shows one funnel base assembled and stood in place on the false floor. Please note, the whole thing is being built upside down! The four cut out parts in the foreground are the second funnel prepared for assembly.



The only other work carried out today was to insert a piece of 5mm foamboard beneath the main platform to give it a bit of 'bulk' and to ensure that when other details are added, the correct clearance for the loco road is maintained.

Perry



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 Posted: Mon Dec 20th, 2010 10:54 am
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Perry
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This very old picture of a No.2 Coaling Plant was found somewhere on the internet a long time ago. I can't find it again despite spending some considerable time trying. I hope that there are no copyright issues, but if its appearance here causes anyone any problems or concerns, then please accept my apologies and rest assured that I will remove it as soon as possible.

This then, is the prototype upon which this model is based:



It looks as though I'm going to have to cut a pit in the baseboard to accomodate the wagon hoist machinery! :shock:

Perry



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 Posted: Mon Dec 20th, 2010 11:00 am
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phill
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is this link with pics any good Perry,

http://www.rmweb.co.uk/community/index.php/blog/116/entry-5129-barrow-road-coaling-tower/ or this one

Plant half way down the page, http://books.google.co.uk/books?id=lXQYpDyjBYAC&pg=PA162&lpg=PA162&dq=wagon+hoist+Coaling+Plant&source=bl&ots=
7F_Yy2EclA&sig=qT-q3bu9dC3Zeo5mlbZ0iewcV_M&hl=en&ei=0EQPTeDPI4PMhAexr_W2Dg&sa=
X&oi=book_result&ct=result&resnum=4&ved=0CEIQ6AEwAw#v=onepage&q&f=false


Or this one, it explains about a tube cleaner for the Loco's which was part of the plant or MPD http://en.wikipedia.org/wiki/Bahnbetriebswerk_(steam_locomotives)

Phill

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 Posted: Mon Dec 20th, 2010 11:00 am
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Stubby47
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Why did they have to make them so big ? You can see how high above the loco the wagon is already - it seems to be an awfuly large building to store coal - an easier way would have been a lower wagon hoist and a conveyor belt to move the coal up higher....



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 Posted: Mon Dec 20th, 2010 11:05 am
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Bob K
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Another interesting project Perry. It would be good to get an idea of scale. Just how high is this thing in 00 scale?

Bob(K)

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 Posted: Mon Dec 20th, 2010 11:11 am
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Perry
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Novice wrote: Another interesting project Perry. It would be good to get an idea of scale. Just how high is this thing in 00 scale?

Bob(K)

When completed it will be roughly 340mm tall, Bob. This is actually one of the smaller types and was used at secondary depots (like mine). The height of the real thing was about 85 feet!

Perry



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 Posted: Mon Dec 20th, 2010 11:54 am
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Perry
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phill wrote: is this link with pics any good Perry,

http://www.rmweb.co.uk/community/index.php/blog/116/entry-5129-barrow-road-coaling-tower/ or this one

Plant half way down the page, http://books.google.co.uk/books?id=lXQYpDyjBYAC&pg=PA162&lpg=PA162&dq=wagon+hoist+Coaling+Plant&source=bl&ots=
7F_Yy2EclA&sig=qT-q3bu9dC3Zeo5mlbZ0iewcV_M&hl=en&ei=0EQPTeDPI4PMhAexr_W2Dg&sa=
X&oi=book_result&ct=result&resnum=4&ved=0CEIQ6AEwAw#v=onepage&q&f=false


Or this one, it explains about a tube cleaner for the Loco's which was part of the plant or MPD http://en.wikipedia.org/wiki/Bahnbetriebswerk_(steam_locomotives)

Phill

Thanks Phill.

I had seen the Barrow Road site before. Nice work!

The second link appears to show an Ash Plant, if I'm looking at the right part of the page. Very useful though, as I also have to build one of them at some stage.

Perry



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 Posted: Mon Dec 20th, 2010 01:04 pm
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henryparrot
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Stubby47 wrote: Why did they have to make them so big ? You can see how high above the loco the wagon is already - it seems to be an awfuly large building to store coal - an easier way would have been a lower wagon hoist and a conveyor belt to move the coal up higher....

Stu your comment there i found relavant some years ago i made up the superquick coaling plant which is similar to Perrys one.

The kit was fine cheap to buy easy to build.

Im positioned it on the layout and it looked stupidly to big totally out of place so i imediately removed it.

A lesson learned there think before you buy something will it actually look right in the surroundings.

Brian

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 Posted: Mon Dec 20th, 2010 01:10 pm
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Bob K
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Perry wrote: Novice wrote: Another interesting project Perry. It would be good to get an idea of scale. Just how high is this thing in 00 scale?

Bob(K)

When completed it will be roughly 340mm tall, Bob. This is actually one of the smaller types and was used at secondary depots (like mine). The height of the real thing was about 85 feet!

Perry



Wow, that's over a foot in real money. You are going to need a high backscene, so that it does not poke over the top of your layout.

Bob(K)

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 Posted: Mon Dec 20th, 2010 01:26 pm
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Perry
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I had already considered the height of my backscene and have catered for it. :thumbs These plants really dominated the areas in which they stood. I think they were magnificent.

All the parts for the feeder chutes have been cut out and one of them assembled:



The gap where it joins the main assembly is only there because it is propped in position for the photo and not yet glued up.

I'll get the other one made up, then, after the glue is well and truly hard, just tidy up a little with a small file or sandpaper. The fit of the parts in general terms has come out so well after using the Sketchup design method that very little tidying or filling is needed.

It looks as though the days of hand-drawn plans and card mock-ups are rapidly going out of fashion. :brickwall

Perry



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 Posted: Mon Dec 20th, 2010 09:07 pm
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Perry
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The chute assembly has been completed and is in place, although not glued in yet. I'm thinking it might be easier to paint before permanent fixing takes place.

I spent a little while this evening designing the hood, winding gear housing and other structures that sit atop the part I've already built. I'm happy with the way it looks with a nice big loco sitting beneath it. Impressive! (The coaling plant, not my modelling. :oops:)

I might be able to post another picture or two tomorrow.

Perry



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 Posted: Mon Dec 20th, 2010 09:36 pm
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ddolfelin
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The modelling is impressive too, Perry.



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 Posted: Mon Dec 20th, 2010 10:57 pm
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Stubby47
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I can also sense another monthly project subject being developed - how to draw complex shapes using Sketchup.



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 Posted: Tue Dec 21st, 2010 06:45 am
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Perry
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Stubby47 wrote: I can also sense another monthly project subject being developed - how to draw complex shapes using Sketchup.

Ooh, good! I would find that very useful. :cool wink

Seriously, I don't think there is a need for it. There are many video help files available on the internet that explain the procedures far better than I could. It's not something I could explain very easily using static images, and I'm only a beginner too. This software is capable of doing far more than I will ever need, but once the basics are grasped, it's easy to use.

Here are some images of the design for the top housing:







The shape and dimensions were taken from the plans so it may not tally exactly with the photo of the prototype. No two plants were exactly the same anyway.

No details such as windows or doors have been drawn in yet, so there is still a bit to do before construction commences.

Perry




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 Posted: Tue Dec 21st, 2010 08:02 am
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Perry
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Now that assembly of the chutes has been completed, the corners have been cut away to accomodate the main legs.



Holes have been cut in the platform to allow the chutes to protrude below:



The flat 'walls' above the chutes will be glued inside the bunker walls in due course. There is still a lot more work to do on the platform as it is only a single thickness of 0.040" plastikard supported on 5mm foamboard at present. This was installed to ensure that the correct clearances are maintained. It would be no joke to finish loads of work and then find a large loco couldn't pass beneath it! :shock:

The 9F gives some indication of the scale of the project.

Perry



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 Posted: Tue Dec 21st, 2010 08:10 am
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very impressive, they were in real life too.we had a full size one on Teesside
it dominated the sky line for miles around.

:doublethumb:lol::cool:

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