QCAD - Lancashire & Yorkshire Locomotives

Discussion in 'CAD Corner' started by Lancastrian, 2 November 2019.

  1. Scale7JB

    Scale7JB Western Thunderer

    I guess no one, however it still would have been handy on the D16 with S7.

  2. Lancastrian

    Lancastrian Western Thunderer

    Not a problem John. I am designing for S7, mainly for myself, but I will have to take into account brake hanger positions for a couple of classes for FS, if anyone would be interested that is. At least I'm not going to be doing the Brighton Atlantic, as that is little finger gap between the flanges !!

    Baltic Tank should be ok.


  3. Lancastrian

    Lancastrian Western Thunderer

    Started work on yet another prototype !


    This is only a rough draft so as to set out the axle centres as I have no actual drawings to work from yet. Hughes 0-8-2T banking engine.

  4. lankytank

    lankytank Western Thunderer


    If you're suffering from 'lockdown' blues - perhaps if you could have a look at the Aspinall 0-6-0 saddletank (rebuild of the B-W 0-6-0's) - trying to work up some enthusiasm for one in G3. :thumbs:

    Take care.
  5. Lancastrian

    Lancastrian Western Thunderer

    Hi Barry,

    Hope the two of you are doing well. Lockdown Blues ? Hmmm, there might be a song there. I already have a couple of the 0-6-0ST's as MM1 models produce them (ex-JLTRT, ex-MM, ex-Chowbent, in that order I believe). They have very nice crisp resin cast boiler/tanks ;). I can see one having cast rivets filed off though as the kit only provides for those locos rebuilt with 4 panel tanks.

    lankytank likes this.
  6. lankytank

    lankytank Western Thunderer

    Yes, Ian. Both of us are a ducking and a weaving.

    I've lost count of the ones I've built in 7mm - in fact, somewhere, in a box....., in a cupboard...., in a Galaxy far, far away...… I 've still got a couple (ex Chowbent) that aren't too far off the painting stage. Will have to dig them out & give them a coat of looking at.

    As commented, I'm looking to twist John Taylor's (Midnight Miller) arm to get the flat works machined out, Slaters have done the wheels (that's the hard one out the way) - then 'we' get the saddletank & lumpy bits 3D printed - Bob's yer Firkin Mrs Perkin...…!!! Easy, when you type it fast.
  7. Lancastrian

    Lancastrian Western Thunderer

    Hey Barry,

    Well the frames should be easy, as they're the same as the Class 25. Unfortunately, I don't currently have any drawings for them, or the Class 23 ST.

    In the meantime:

    Further work on the Class 31 frames.

  8. Lancastrian

    Lancastrian Western Thunderer

    Whilst recovering from putting my back out, and a distinct lack of modelling going on for the last 10 days, I've just managed to be able to sit with my laptop, so have carried out some more work on the Baltic tank frames.


    Last edited: 23 August 2020
  9. Lancastrian

    Lancastrian Western Thunderer

    Some further work today on frame stretchers/motion brackets.



    Attached Files:

    Last edited: 16 August 2020
  10. Lancastrian

    Lancastrian Western Thunderer

    Saturday. More work on the frames for the LYR 0-8-0 locomotives. Although this is specific to the "Class 31" 0-8-0's, looking at other drawings, most is pertinent to the "Class 30" 0-8-0's too, so almost killing two birds with one stone. The 0-8-0 Compound will be slightly different.


  11. Lancastrian

    Lancastrian Western Thunderer

    Rainy Thursday afternoon spent working on the 0-8-0 again.


    Two types of crank, the balanced type as fitted to locomotives from Lot 66 onwards (as far as I can ascertain) and possibly others, and an oblique crank axle to which there is no current confirmed evidence of it being used at all on any of the post 1913 builds, for which the original drawing is dated.


    Attached Files:

    Last edited: 27 August 2020
    Kerry Viney and mickoo like this.
  12. Mike W

    Mike W Western Thunderer

    That take-off on the connecting rod for the Joy valve gear is very near to the little end? The LNWR versions were much closer to the centre of the rods. The Anchor Link must be very short - is the hole for the front end of it on your drawing yet?

  13. Brian McKenzie

    Brian McKenzie Western Thunderer

    Hi Ian,

    I was interested to see the alternative crank axle arrangement in your Class 31 0-8-0 QCAD work. Don't know whether this design saw much use in Britain, but was used once in New Zealand for a ponderous 4-8-2 subsequently limited to 30mph.

    The cross section of the angled lump between the two cranks was square in shape.

    This 15 second animation shows its unusual gait:

    Brian McK.
    Lancastrian likes this.
  14. Lancastrian

    Lancastrian Western Thunderer


    Good spot. I've just noticed an error on my part with the connecting rod overall length. I also noticed an incorrect dimension for the balanced crank too, so all now correct.


    Last edited: 28 August 2020
    Kerry Viney likes this.
  15. Lancastrian

    Lancastrian Western Thunderer


    The LYR oblique crank is also square in section between where the two connecting rods would be.

    Interesting to learn the X class was the worlds first 4-8-2 tender design.

  16. Lancastrian

    Lancastrian Western Thunderer

    A few more hours work, after taking a break from fighting with the front end of a motor train fitted SR H class, which is being repaired.


    There does seem to be a discrepancy in the drawing for the large cab locomotives, as above, as the vertical handrail on the cab side is given as being 3.5 inches in from the end of the cab side sheet, but this doesn't line up with it's position on the drawing relative to the frames and the windows. Something to hopefully investigate if we ever get back to being able to book Search Engine at the NRM.

  17. Lancastrian

    Lancastrian Western Thunderer

    Time for some work on the Aspinall Class 5 2-4-2T.


  18. Lancastrian

    Lancastrian Western Thunderer

    You guys will be getting fed up of LYR 0-8-0's at some point, but then that is due to Aspinall's standardisation policy, continued by Hughes. So I present the first draft, with some "guessed" dimension to get it this stage (cab mainly) the Class 30 Compound. This is for the production series of 10 locomotives.


  19. Lancastrian

    Lancastrian Western Thunderer

    I hear from the NRM that they are currently planning on Search Engine re-opening in November, of course dependent on CV-19.
    In the meantime, I've moved from locomotives onto something a little larger.


    LMS 120t BTW.

  20. Lancastrian

    Lancastrian Western Thunderer

    Work on the BTW continues with the bogies.


    simond, Rob Pulham, mickoo and 2 others like this.