Nick Dunhill's 7mm W (A6) or Whitby Tank Workbench

Discussion in 'Area 51' started by Nick Dunhill, 25 May 2017.

  1. Nick Dunhill

    Nick Dunhill Western Thunderer

    .....well as you can see from my last post I had made the auxiliary air tank and I have since fitted it up to the model and made a connection to the triple valve.

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    I have also made an auxiliary-auxiliary air tank and fitted that up, and have also completed the main bits of Westinghouse plumbing.

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    Next is the pivot points, shaft and operating arms for the brake cylinder and handbrake......
     
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  2. Nick Dunhill

    Nick Dunhill Western Thunderer

    I keep looking at the above shot of the loco upside down and wish I'd carried out my idea for cutting away the footplate under the cab floor. I guess that the footplate does not continue under the cab, and that way the lower pipework could have ended in the vicinity of the upper pipes in the cab. It would have been good to be able to see a representation of the cab floor planking from the bottom of the loco and little extra modelling to achieve it too. A veritable nightmare to paint eh WH? Happy Modelling all, see you at Donny.....
     
    Last edited: 30 May 2018
  3. Scale7JB

    Scale7JB Western Thunderer

    Lovely!

    JB.
     
  4. Rob Pulham

    Rob Pulham Western Thunderer

    Hi Nick,

    Will you post details of which springs you got from LG and where you sourced the triple valve and the smaller westinghouse cylinder castings from please at some point?
     
  5. Nick Dunhill

    Nick Dunhill Western Thunderer

    Here you go Rob. The code numbers refer to LGM. Since these I've also bought a set of brake and steam heat pipes, some brake shoes, an air brake cylinder, a handbrake below floor thingymajig (turnbuckle?) and some leaf springs for the radial truck. I think that'll be it as well, can't think of anything else I need. The air reservoirs are all scratchbuilt.

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    A lot of this stuff you may not need, depending on how much detail you're planning. The triple valve is on the castings I supplied to you.
     
    Rob Pulham likes this.
  6. Overseer

    Overseer Western Thunderer

    Interesting the locos had triple valves. Most Westinghouse equipped locos had straight air brakes with either a separate drivers control valve or a combined control valve to operate the 'automatic' train brakes by reducing the train air line pressure while supplying air pressure to the loco brakes, so there was no need for a triple valve on the majority of Westinghouse equipped locos.

    The models are looking great btw. I like to see your progress while I can't find time to do any proper modelling. I need to make a similar main reservoir for the 2-4-0st I am slowly building - I know it had slightly dished ends and was mounted longitudinally but am struggling to find enough information to be sure it is right as I only have clear side views which do not show if it is offset or whether there were two tanks.
     
  7. Rob Pulham

    Rob Pulham Western Thunderer

    Cheers Nick,

    How could I not add loads of detail now that you have pointed the way:thumbs:
     
  8. Nick Dunhill

    Nick Dunhill Western Thunderer

    I never doubted you Rob.

    I was lucky Mr Overseer, the NRM here in the UK had many drawings of the W, they're here if you're interested;

    nick dunhill’s albums | Flickr

    BTW was in Melbourne last year visiting the wife's sister. A very enjoyable trip (she lives in South Melbourne near the market.)
     
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  9. Overseer

    Overseer Western Thunderer

    Yes, it is much easier to build detailed models with good original drawings. The 2-4-0st I am building is an 1861 built George England product designed by Daniel Gooch in its circa 1900 condition. I have been looking for drawings for them on and off for decades but have only found a boiler arrangement drawing and 3 differing outline diagrams. Even if an original GA turns up it won't have the Westinghouse brakes which were fitted during the 1890s. I have full sets of drawings for other locos which are at various stages of planning and construction, much easier. I don't like making up details just to make a model look finished.

    South Melbourne market is not far away at all, next time you are here you should let me know.
     
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  10. Nick Dunhill

    Nick Dunhill Western Thunderer

    ...on with the show! I have made some levers and a brake shaft. everything is made from scrap etch and a bit of rod.

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    And here they all are fitted up

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    I then made some runs of pipe. One goes from the bottom of the Westinghouse valve, across the frame under the large air reservoir, and off to the train brake pipes on each buffer beam. You can also see the train heat pipe that runs from the bottom of the Mason valve to the rubber hoses on the buffer beams. The two runs of pipe are together down one side of the loco and are detachable so the chassis and body can be separated (they interfere with the steps.) The connecting hoses will be added when I get the castings from LGM.

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    The train heat pipe is the thicker rear pipe. Here's all the pipe fittings pre cut.

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    More plumbing next, it's nearly all done. just the hoses and feed pipes to/from the injectors......
     
  11. Nick Dunhill

    Nick Dunhill Western Thunderer

    .....(nearly) the end of the pipework, just the buffer beam connections to be made for the heat and brake pipes when the castings turn up.) The latest are the feedwater pipes from the rear tank to the injectors (you can see them between the air tanks) and the overflow pipes from the bottom of the injectors to the footsteps.

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    I wish I could be bothered to polish everything like Richard Lambert and Malcolm Mitchell, but I have since Viakal-ed them to remove all the flux residue and the grott. The tarnish is just heat and abrasion marks......
     
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  12. oldravendale

    oldravendale Western Thunderer

    I wish I could be bothered to polish everything like Richard Lambert and Malcolm Mitchell, but I have since Viakal-ed them to remove all the flux residue and the grott. The tarnish is just heat and abrasion marks......

    Wish I'd have thought of that one.....
     
    Nick Dunhill likes this.
  13. Peter Cross

    Peter Cross Western Thunderer

    I think I want this loco laying on its side on the layout, just to get to see the wonders that would be hiding when sat the right way up. Cracking work as per usual Nick.
     
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  14. Nick Dunhill

    Nick Dunhill Western Thunderer

    ....right no wheels as yet so on with the motion. Favourites and (slight) fails of Laurie Griffin inside motion parts. The rods are all good castings and tidy up well with an hour or so fettling.

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    I have bought many sets of these castings in one form or another and these are the first I have had with cast rather than turned eccentric sheaves. I was a bit worried but I needn't have been as they clean up very nicely and are accurately pre-drilled.

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    The crankwebb/journal castings are however another matter. Some were distorted and had been drilled when so. Therefore when the castings were realigned the holes for the axles were not concentric. Laurie offered to replace them but I decided to have some made that were thinner to fit in between the horncheeks.

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    Next more filing........
     
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  15. Steph Dale

    Steph Dale Western Thunderer

    Mick,

    We could 3d print the cranks and eccentrics in brass for you... :)

    Steph
    (with Finney7 hat on)
     
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  16. Threadmark: Thanks for the offer but they're being made as I type...
    Nick Dunhill

    Nick Dunhill Western Thunderer

    Thanks for the kind offer Steph, but someone is making some bespoke ones as I type....
     
  17. Dog Star

    Dog Star Western Thunderer

    Not surprised given that there is nothing listed on the Slater's Plastikard website - so what do you intend to do for the driving wheels?
     
  18. Nick Dunhill

    Nick Dunhill Western Thunderer

    Well Mr Star the nice man at Slater's has said he will make a new range of NER wheels for the A6,7 and 8 as there are kits available for each now from different sources. Apparently they'll be double sided too, ie profiled on the back.
     
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  19. Nick Dunhill

    Nick Dunhill Western Thunderer

    ....con rods fitted up.....

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  20. Steph Dale

    Steph Dale Western Thunderer

    Jolly good, just as long as you have a solution; there's no point struggling. :thumbs:

    Steph