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7P 5FA

Dieses Thema im Forum 'Steam Traction' wurde von portline gestartet, 10 April 2009.

  1. portline

    portline Member

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    What does 7P 5FA stand for?
    Im aware that 7P is obviously a class 7 passenger and the 5F is class five freight but what does the A mean?
     
    portline, 10 April 2009
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  2. NDTSDN

    NDTSDN Part of the furniture

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    NDTSDN, 10 April 2009
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  3. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

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    Though the question was never really answered in that thread - I thought that the 'A' and 'B' suffixes were an indication of the loco's ability to brake unfitted goods trains?
     
    Martin Perry, 10 April 2009
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  4. 45562 ALBERTA

    45562 ALBERTA New Member

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    A ny loco carrying 7P5FA means that it is a class 7 passenger loco, a class 5 freight loco that is only allowed to pull freight trains with continuous vacuum brake.
    ie fully fitted. I was told this by Bert Hitchen when involved with 34027 under his ownership
     
    45562 ALBERTA, 10 April 2009
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  5. Spamcan81

    Spamcan81 Nat Pres stalwart

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    There was a long debate about this on a Southern group and it would seem that the A suffix indicated locos of superior braking abilities and the B for locos of lesser braking performance. Both suffixes applied to the working of unfitted trains. There were anomalies in the system as some classes received a rating that wasn't borne out by real life performance when braking an unfitted train.
     
    Spamcan81, 11 April 2009
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  6. NDTSDN

    NDTSDN Part of the furniture

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    The Bulleid Q1 Class had a 5FA rating on their cabside.

    It has been documented many a time that the Q1 braking ability was poor !
     
    NDTSDN, 11 April 2009
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  7. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

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    I thought that it was the other way around hence the WC/BB and 330XX classes getting an 'A' and the Maunsell Moguls getting a 'B'
     
    Martin Perry, 11 April 2009
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  8. Jamessquared

    Jamessquared Nat Pres stalwart

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    A is higher brake capability, B is lower.

    The E4 (a smallish tank engine, with no tender to give extra braking) is 2P 2FB

    Tom
     
    Jamessquared, 11 April 2009
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  9. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

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    Sorry I cannot really believe that the Moguls were considered to be of inferior braking ability, especially compared to the Bulleids ......
     
    Martin Perry, 12 April 2009
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  10. Jamessquared

    Jamessquared Nat Pres stalwart

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    It's as Spamcan81 wrote:

    I suspect some official somewhere made up the classifications based on appearances, without necessarily having practical experience of the locos concerned :)

    Tom
     
    Jamessquared, 12 April 2009
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  11. James

    James Part of the furniture

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    See the Stanier mogul's wandering power classifications!
     
    James, 12 April 2009
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