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Francis Levant bogie hopper wagons - Scratchbuilding. - More Practical Help - Your Model Railway Club
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 Posted: Sat Jul 23rd, 2016 03:55 pm
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Zodiac
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Having completed a rake of bashed chemical tanker wagons I thought I'd have a go at scratch-building some more unusual wagons. For sometime I've been interested in the 92t glw bogie aggregates hoppers (dia PH003A) built 1970/71 at Hartlepool by IMC Ltd. They are very unusual with lower side clam doors for unloading. With just 11 made (Nos. 17001 - 17011) and owned by Francis Parker Ltd they are very unlikely to get produced as a RTR version just as I finish my model version, so they are my choice. Here's a pic:

https://www.bing.com...1eo0&ajaxhist=0

So far I've managed to source a number of suitable photos, got a GA drawing (with basic dimensions) and have sketched up some model design ideas. More later, if and when I progress.

G. 

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 Posted: Sun Aug 7th, 2016 06:07 pm
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Zodiac
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I've been a bit side-tracked with other projects having undertaken some more research, made a character drawing to help me understand the wagon (below) and ordering the bogies and some materials (triangular styrene strip).



In the meantime I've been getting underway with a couple of scratch-built buildings: the SER 'flat iron' offices and the Shipwrights Arms public house next door. Neither are completed but below are a couple of pics showing the stages reached:





Z.

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 Posted: Sun Aug 7th, 2016 06:29 pm
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Brossard
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Hi Z, great to see someone else with hair shirts in the wardrobe.  Looking forward to seeing this progress.

John

PS, love the avatar



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 Posted: Wed Aug 10th, 2016 08:01 pm
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Zodiac
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Not exactly the wagons, but here is some slow development on my N gauge Shipwrights Arms building project:



But at least it is scratch-building.

Z.

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 Posted: Mon Aug 15th, 2016 05:56 pm
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Zodiac
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The bogies and strip has arrived so back to consideration of how to produce the wagon. I'd like to be able to resin cast the main body and that will mean producing a master to make the mould from. Having already had a bash at it, producing the mould and casting the parts is not a problem.  
However, currently I've been thinking through exactly how it will be assembled - it seems that a one piece body cast is probably not doable due to the shape (and large undercuts) so I'm thinking through how to produce the sides and ends and how they will join/go together. And then how it will be mounted on a chassis and how to make that chassis. The design consideration are obviously important for the assembly and completion - get it wrong and I could simply add a huge amount of fettling work to put it together.

G.

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 Posted: Mon Aug 15th, 2016 06:02 pm
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Brossard
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I'm interested in how you will do the casting.  Not something I've contemplated before.  How will you produce the mould?

As to the final assembly, it occurs to me that a mock up of the body in plastic card would enable you to fairly easily "cut and paste" to finalise the mounting of bogies and underframe.

John

 



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 Posted: Mon Aug 15th, 2016 09:15 pm
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Zodiac
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The mould will made in a two part chemical RTV silicon rubber from a master that I'll build from plasticard. There's an article planned for NGS Journal 5/16 explaining making moulds and taking castings.
The chassis will need to be flat a square for the bogie pivot bushes on the underside and able to carry/fit the body on the top side. 

G.

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 Posted: Thu Aug 18th, 2016 09:27 pm
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Zodiac
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Apologies from chopping and changing between projects, but here's a little more progress on the pub. There still more work required such as finishing and attaching one wall, and adding lots of details like the chimney pots: 





Z.



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 Posted: Thu Aug 18th, 2016 11:37 pm
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Petermac
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That's a great looking building. :thumbs  Is it all plasticard ?



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 Posted: Fri Aug 19th, 2016 12:02 am
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Zodiac
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Petermac wrote: That's a great looking building. :thumbs  Is it all plasticard ?

Thanks, and nope. It's a mix of cardboard and plasticard.
The floors are 2mm thick card and the rendered walls are thinner smooth card. The brickwork walls are embossed plasticard. Roofs are also card, the pitched ones covered in Redutex slate sheet.
Z. 

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 Posted: Fri Aug 19th, 2016 12:15 am
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Petermac
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Ah yes, Redutex.  I've read the sales blurb and heard lots about it but is it as good as they reckon ?  Seems almost too good to be true from what I've read. :roll:

What glue do you use to stick it all together ? Card, plastic and the "floppy" Redutex sound unlikely bed-fellows .............:hmm



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 Posted: Fri Aug 19th, 2016 01:55 am
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Zodiac
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Styrene to styrene - liquid poly.
Card to card - CAA or Roket card glue (thin CAA can also be used to strengthen card edges so that it can be filed and shaped).
Plastic to card - CAA

Redutex is self adhesive and will stick to any flat smooth surface like card or styrene sheet. You don't use it on it's own. It is easy to cut and trim. Also it has good relief (the tiles at least) and is pre-coloured so no painting required. Great stuff and highly recommended.

Z.

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 Posted: Sat Aug 20th, 2016 10:41 pm
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Zodiac
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I've added the chimney pots and pub and shop name-boards and, for now, that is as far as I'm going to go with the Shipwrights although there are other details such as window boxes, flashing and a hanging pub sign that could be added;





Now I'll turn my attention to the wagon.
Z.

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 Posted: Sat Aug 20th, 2016 11:33 pm
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Petermac
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Very nice. :thumbs:thumbs



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 Posted: Sat Aug 20th, 2016 11:36 pm
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Silver Fox
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a very nice build,
:thumbs;-):cool:
Owen



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 Posted: Sun Aug 21st, 2016 01:28 am
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MaxSouthOz
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I had to look closely to see if the photo was CGI or a photograph of your model, Z.

Excellent!  :thumbs



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 Posted: Sun Aug 21st, 2016 03:16 am
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Zodiac
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Thanks for the compliments guys.
Now to crack on with the wagon and the next building.
Z.

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