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TOPs number etc ex British India Line thread.

Discussion in 'Steam Traction' started by Fred Kerr, Aug 7, 2017.

  1. Fred Kerr

    Fred Kerr Part of the furniture

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    Martin1656 - you need to learn the numbering system methinks !

    98 - Steam locomotive
    8 - Power Classification
    18 - Last 2 characters of running number.
    Representing 35018

    Now if you're talking Bodmin (34016) then

    98 - Steam locomotive
    7 - Power classification
    16 - Last 2 characters of running number

    Hence why checks for 46115 on the TOPS / TRUST lists should look for 98715 as represented by

    98 - Steam locomotive
    7 - Power classification
    15 - Last 2 characters of running number.
     
  2. S.A.C. Martin

    S.A.C. Martin Well-Known Member

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    But to be fair, 98-8-72 bucks that trend by now being rated 7P and still registered as an 8P.
     
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  3. 30854

    30854 Member

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    Probably just as well none of Riddles Crosti Boilered 2-10-0s survived then.;)
     
  4. Jamessquared

    Jamessquared Resident of Nat Pres

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    Interesting - but does that mean that both 46100 "Royal Scot" and 70000 "Britannia" would have the same number on the mainline - 98700?

    Tom
     
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  5. Steve

    Steve Resident of Nat Pres Friend

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    No. only the first to be registered follows that form. Any subsequent ones get a unique number, which follows the format as much as possible. Thus 76079 is registered as 98476 because 80079 was registered first.
     
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  6. Jamessquared

    Jamessquared Resident of Nat Pres

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    Thanks Steve - guessed there had to be something more to it to account for duplicates. I wonder if there are any others?

    Tom
     
  7. Fred Kerr

    Fred Kerr Part of the furniture

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    Nope ! In that case the rule is that for any pair of locomotives with the "same" computer number, one would report as the "calculated" number (i.e. 98700) and the other would report as the next (free) higher number (98701). IIRC 70000 = 98700 and 46100 = 98701 but whether that rule applies if only one of the pair is active on the main line I am uncertain; anyone from the Rolling Stock Library around ?
     
  8. John Petley

    John Petley Well-Known Member

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    By the time Ian Riley puts 35009 on the main line, 60009 may well have retired, but there would otherwise be a potential clash here. The other example which springs to mind is 5029/7029.
     
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  9. Jamessquared

    Jamessquared Resident of Nat Pres

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    More than I thought of! I spent a while racking my brain just to find one example ... :)

    Tom
     
  10. 22A

    22A Active Member

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    Is 98 just for steam locos or any preserved loco capable of moving itself please?
     
  11. John Petley

    John Petley Well-Known Member

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    I guess that NYMR engines need a TOPS number for Whitby, so there is a potential clash between 44806 and 61306.
    Another main line retiree which may need to surrender its TOPS number is 34027 as it will be taken by 7027 in a few year's time.
    Mallard is a pretty long-shot for future main line use, but if it was to run in its BR identity (60022) either it or 35022, when Jeremy Hosking gets round to restoring it, would need a different TOPS number. Still, if this is a very unlikely scenario, it's not as unlikely as a potential conflict between 35029 and 46229 :)
     
  12. 8126

    8126 Member

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    Worth remembering that as far as I can tell any steam loco moved over the national network, regardless of being mainline certified in its own right, seems to have a TOPS number.

    The best bit of 5029/7029 is that because 5029 was therefore registered as 98728, 34028 is 98730. Should they ever find themselves next to each other at Wareham, there's a trick question in there....
     
  13. Fred Kerr

    Fred Kerr Part of the furniture

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    Diesel / Electric traction uses Code = 89 rather than 98 which is reserved for steam. Thus when 46009 was in RTC use its "official" number was :

    89 = Diesel locomotive
    4 = Power Classification [= Type 4]
    09 = Last 2 characters of running number.

    In the same analysis when Class 50 50026 operates on the main line it "operates as

    89 = Diesel Locomotive
    4 = Power classification [= Type 4]
    26 = Last 2 characters of running number

    I noted when Class 71 71001 / E5001 was on display at Barrow Hill it bore the number

    89 = Electric Locomotive
    4 = Power classification [ 2550 hp = Type 4]
    01 = Last 2 characters of running number.
     
  14. martin1656

    martin1656 Part of the furniture

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    i wonder will we ever see 98220 ?
     
  15. Jamessquared

    Jamessquared Resident of Nat Pres

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    Presumably that included 98292 ;)

    Tom
     
  16. John Petley

    John Petley Well-Known Member

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    Is that little Furness 0-4-0 really rated 2P??:)
     
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  17. 8126

    8126 Member

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    Of course!
     
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  18. Jamessquared

    Jamessquared Resident of Nat Pres

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    Surprisingly big number!

    What's the difference between "AWCS" and "MBSL"?

    Tom
     
  19. Matt37401

    Matt37401 Part of the furniture

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    At a guess AWCS looks like a pool code for West Coast. MBSL looks like it's a loco that's operated by both West Coast and DBC. Happy to be corrected.
     
  20. sycamore

    sycamore Member

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