If you register, you can do a lot more. And become an active part of our growing community. You'll have access to hidden forums, and enjoy the ability of replying and starting conversations.

P2 Locomotive Company and related matters

Discussion in 'Steam Traction' started by class8mikado, Sep 13, 2013.

  1. Jamessquared

    Jamessquared Nat Pres stalwart

    Joined:
    Mar 8, 2008
    Messages:
    22,829
    Likes Received:
    44,458
    Location:
    LBSC 215
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    About 4 thou ... (4' 8.5" is 1435.1mm, but the official definition of gauge now is 1435mm. I suspect it makes the square root of b*gg@r all difference...)

    Anyway, back to the Mikado.

    Tom
     
    Matt37401 likes this.
  2. class8mikado

    class8mikado Part of the furniture

    Joined:
    Jun 1, 2009
    Messages:
    3,266
    Likes Received:
    1,234
    Occupation:
    Print Estimator/ Repository of Useless Informatio.
    Location:
    Bingley W.Yorks.
    Heritage Railway Volunteer:
    No I do not currently volunteer
    So if 60163 gets clearance to run the odd 90mph , would it worth getting clearance for this one to run at 83 (same rpm) ?
     
  3. John Stewart

    John Stewart Part of the furniture

    Joined:
    Sep 22, 2011
    Messages:
    4,206
    Likes Received:
    2,072
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Hilton, Derby
    Heritage Railway Volunteer:
    No I do not currently volunteer
    Quite so. The Berne Convention fixed it at 1435mm. That was too complicated for the British at that time though.;)
     
  4. Steve

    Steve Resident of Nat Pres Friend

    Joined:
    Oct 7, 2006
    Messages:
    10,892
    Likes Received:
    8,022
    Occupation:
    Gentleman of leisure, nowadays
    Location:
    Near Leeds
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I thought it had actually grown 3.075mm since steam finished!
    (Do PW wallas work to these tolerances?)
     
  5. John Stewart

    John Stewart Part of the furniture

    Joined:
    Sep 22, 2011
    Messages:
    4,206
    Likes Received:
    2,072
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Hilton, Derby
    Heritage Railway Volunteer:
    No I do not currently volunteer
    The increasing tendency to use centimetres depresses me because it is not an SI unit, one should go straight from metres down to millimetres. There is a good reason for this; the tolerances which need to be observed in most activities are seldom finer than a millimetre so the use of decimal places is avoided whereas with centimetres decimal places are all too often required. Almost everyone feels happier dealing with whole numbers and in manual multiplication (which was the only type available when I was at school) one always removed the decimal point,. did the multiplication, and re-inserted it afterwards with the appropriate number of digits after it.
     
    andalfi1 likes this.
  6. Spamcan81

    Spamcan81 Nat Pres stalwart

    Joined:
    Aug 25, 2007
    Messages:
    33,169
    Likes Received:
    17,789
    Occupation:
    Training moles
    Location:
    The back of beyond
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I think you should get out more.:)
     
    Johnb likes this.
  7. The Green Howards

    The Green Howards Resident of Nat Pres Account Suspended

    Joined:
    Feb 20, 2016
    Messages:
    10,034
    Likes Received:
    4,853
    Occupation:
    Layabout
    Location:
    Lurking
    Heritage Railway Volunteer:
    No I do not currently volunteer
    I'm still getting over the use of centilitres in France - as in asking for a cinquante in a bar...!
     
  8. Steve

    Steve Resident of Nat Pres Friend

    Joined:
    Oct 7, 2006
    Messages:
    10,892
    Likes Received:
    8,022
    Occupation:
    Gentleman of leisure, nowadays
    Location:
    Near Leeds
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Where did I mention the dreaded centimetre, or anyone else, for that matter?
     
    Jamessquared likes this.
  9. 61624

    61624 Part of the furniture

    Joined:
    Sep 27, 2006
    Messages:
    4,423
    Likes Received:
    2,463
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I seem to have spawned a flood of pedantry and will add to that by pointing out that what I wrote was:

    Isn't track also rather different nowadays?

    I didn't say anything about its gauge! What I meant was that rail is heavier, fixings to sleepers stronger and more secure, sleepers deeper and heavier - in all far more resistant to the forces that result in gauge spreading.
     
  10. flying scotsman123

    flying scotsman123 Resident of Nat Pres

    Joined:
    Sep 9, 2013
    Messages:
    9,941
    Likes Received:
    16,265
    Gender:
    Male
    Location:
    Cheltenham
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I'm with @John Stewart on this, and anyway, it's rare that if you're having to use cm you won't need it to one decimal place anyway, in which case use mm, and also much more convenient in physics where you've got lot of very big and small numbers, clunking down by powers of three from milli to micro etc is much easier.
     
  11. John Stewart

    John Stewart Part of the furniture

    Joined:
    Sep 22, 2011
    Messages:
    4,206
    Likes Received:
    2,072
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Hilton, Derby
    Heritage Railway Volunteer:
    No I do not currently volunteer
    You didn't. I just decided to indulge in a mild bit of thread drift.:)
     
    andalfi1 likes this.
  12. Foxhunter

    Foxhunter Member

    Joined:
    Jun 9, 2011
    Messages:
    583
    Likes Received:
    664
    Heritage Railway Volunteer:
    Yes I am an active volunteer
  13. Matt37401

    Matt37401 Resident of Nat Pres

    Joined:
    Jun 8, 2014
    Messages:
    11,590
    Likes Received:
    7,313
    Occupation:
    Nosy aren’t you?
    Location:
    Nowhere
    Heritage Railway Volunteer:
    No I do not currently volunteer
    My apologies, my fault being silly.
     
  14. Ploughman

    Ploughman Part of the furniture

    Joined:
    Apr 1, 2008
    Messages:
    5,503
    Likes Received:
    2,435
    Occupation:
    Ex a lot of things.
    Location:
    Near where the 3 Ridings meet
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Over the last decade or so the actual track gauge has varied from 1435 to 1432 and back to 1435mm
    So 1.5mm difference at each rail. To deal with this radical change in gauge I understand that NWR now implement transition sleepers to cope with the change in gauge.
     
  15. Yorkshire Exile

    Yorkshire Exile Member

    Joined:
    Feb 24, 2007
    Messages:
    331
    Likes Received:
    82
    Gender:
    Male
    Occupation:
    Codger and retired trustee of A1SLT
    Location:
    Jersey
    Heritage Railway Volunteer:
    No I do not currently volunteer
    Graham,
    Is that the chime whistle l bought for 60163 or a new one?
    Barry
    Graham
    Would that be the chime whistle l bought to be fitted to 60163 or it another new one?
    Barry
     
  16. Johnb

    Johnb Resident of Nat Pres

    Joined:
    Dec 3, 2014
    Messages:
    12,001
    Likes Received:
    12,249
    Gender:
    Male
    Occupation:
    Retired, best job I've ever had
    Location:
    Buckinghamshire
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    It says in the Mikardo Messenger that it needs to be tuned so I would have thought a new one
     
    paullad1984 likes this.
  17. Foxhunter

    Foxhunter Member

    Joined:
    Jun 9, 2011
    Messages:
    583
    Likes Received:
    664
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    As far as I know Tornado still has that chime whistle Barry - this is a new one which will be tuned to the pre-war spec (which apparently is different to the later chime whistles).

    Foxy
     
    paullad1984 likes this.
  18. Foxhunter

    Foxhunter Member

    Joined:
    Jun 9, 2011
    Messages:
    583
    Likes Received:
    664
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    aron33 likes this.
  19. Foxhunter

    Foxhunter Member

    Joined:
    Jun 9, 2011
    Messages:
    583
    Likes Received:
    664
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    MarkinDurham, CH 19 and S.A.C. Martin like this.
  20. Eightpot

    Eightpot Resident of Nat Pres Friend

    Joined:
    Aug 10, 2006
    Messages:
    7,492
    Likes Received:
    1,752
    Gender:
    Male
    Occupation:
    Engineer Emeritus
    Location:
    Aylesbury
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Perhaps you'd like to try getting a quote using millimetres on here:-

    http://www.transglobalexpress.co.uk...kparcelquote&gclid=CNPnmI-JiNACFUEaGwodVlAGOg

    What's wrong with decimetres and decilitres, I say?
     

Share This Page