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45699 Galatea

Rasprava u 'Steam Traction' pokrenuta od TonyMay, 3. Travanj 2010..

  1. Oswald T Wistle

    Oswald T Wistle Well-Known Member Friend

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    That would be light green to reduce weight!
     
    andalfi1 se sviđa ovo.
  2. 26D_M

    26D_M Part of the furniture

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    Its most likely they would prefer to use 46115 or eventually 35018 & 34016 for Shap northwards trains. Presently the Scot appears hors de combat and a comparable sub isn't yet to hand. The only choice therefore is to let a Jub take the strain.
    Bit surprised 34067 hasn't been returned north while southern ops are on hold.
     
  3. RalphW

    RalphW Nat Pres stalwart Staff Member Administrator Friend

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    But there was also the start out of Preston up through Leyland where she managed the 12 without too much trouble, I only linked to the Warrington video as it's the only one I could find, apart from my on board.
     
  4. Dobbs0054

    Dobbs0054 Member

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    [Had the Brit not been following so close would there have been pages of comment on Galatea's performance? Probably not. QUOTE

    Very true. We would all be writing celebrating Galatea taking 11 over Shap with no diesel assistance. Curse the TPE!!!
     
  5. 46118

    46118 Part of the furniture

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    Strange. Just listening to the exhaust on Ralph's video, Galatea has very even exhaust beats. Maybe time plays tricks, but back in squadron service I recall the Jubilees had a "double-three" beat as Terry Essery comments.
    I'm not saying for one minute that the current valve events setting has an effect on performance, but the loco does sound different to what I recall the Jubilees sounding like in the 50's and 60's.

    46118
     
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  6. Big Dave

    Big Dave Member

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    Jubillee's sound different going away to when they are approaching I'm told it's because of the doppler effect.

    Cheers Dave
     
  7. acorb

    acorb Part of the furniture

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    I've had 2 trips behind Galatea - on both occasions she slogged uphill but made it and ran very freely going downhill to try & make up the time. In steam days this would be perfectly acceptable and would result in an arrival probably not far off schedule. Today, due to the railway being faster and at capacity, this strategy will probably cause delays and there is Galatea's legal upper limit to consider when going downhill.
    At the end of the day she probably is at the poorer end of a class 6 whereas Leander is at the better end - but has Leander taken 11 or 12 coaches over the northern fells unassisted? 45305 is probably at the top end of a class 5 - between the 2 locos there probably isn't much difference, however, we wouldn't be having this conversation about a Black 5.
    In summary, if you want to get over a bank quickly put a pacific on the front. In an emergency Galatea will get you there, just not as quickly until gravity kicks in and then she will give a pacific a run for it's money!
     
    Last edited: 2. Lipanj 2015.
  8. 26D_M

    26D_M Part of the furniture

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    The chaps that care for 45690 might not want 11 or 12 on the drawhook over Shap, using the same ethos as Tyesley.
    As you say though no 2 locos of the same class are ever identical.
     
  9. YTJames

    YTJames New Member

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    True, and all though I don't want to favour either as I genuinely do like Galatea, on a small incline or on the flat she runs very very well and she has come a long long way in two years, you have to take in this storming effort into account even if it is 9:



    Thoughts?
     
  10. Bifur01

    Bifur01 Member

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    The doppler effect just changes the wavelength, so it should affect each loco's sound the same.
     
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  11. Scrat

    Scrat New Member

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    The reason for the difference in smoke is really very simple, Britannia is burning Welsh coal that makes hardly any smoke, and Galatea is burning Yorkshire coal that is always very smokey!
    As for the standard of firing, it takes a lot more skill and know how to fire a 5X with that load than it ever will a Brit!
     
    Last edited: 2. Lipanj 2015.
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  12. Big Dave

    Big Dave Member

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    The doppler effest changes the wavelength and the frequency,
    I had noticed this back in the 50's watching Bushbury Jubilees at Tile Hill, maybe others did it but I think it was a function of the Jubillee's distinctive beat, maybe the scots and patriots did it too but they were much less common through Tile Hill.

    Cheers Dave
     
  13. rule55

    rule55 Member

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    I'd be interested in knowing how you know what sort of coal 70000 is burning?
     
  14. threelinkdave

    threelinkdave Well-Known Member

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    Whilst safety valves feathering is a sign of good boiler performance the absence of feathering tells you bugger all. The boiler could be almost on the line but not beyond. Also Galatea is using steam at a rate matched by consumption from the sound of the engine. Galateas fireman should be praised for producing the amount of steam he did.
     
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  15. RalphW

    RalphW Nat Pres stalwart Staff Member Administrator Friend

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    The Doppler effect is only the compressing or expanding of the frequency hence the change in pitch of a whistle as the loco goes past you, it will not alter the sound in any other way. An uneven beat will remain uneven.
     
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  16. mrKnowwun

    mrKnowwun Part of the furniture

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    Doppler

     
  17. mrKnowwun

    mrKnowwun Part of the furniture

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    Clearly with welsh coal you can see the colour of the Dai........
     
  18. RalphW

    RalphW Nat Pres stalwart Staff Member Administrator Friend

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    Precisely....
     
  19. 46118

    46118 Part of the furniture

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    Reference Galatea's six very evenly spaced beats, as heard on the video taken on the train--great acceleration by the way!--I was comparing it with the many runs I did "up the hill" from Chesterfield to Sheffield, or vice-versa, either way circa 5 miles at 1-100, and Jubilees had that distinctive beat, with an emphasis on the third beat.
    Maybe it is just that modern valve setting, in this case undertaken at Carnforth, is different to what Crewe used after an overhaul. Will be interesting to check when TYS outshop "Bahamas".

    I know we can all wonder at the feat of Galatea taking 14 up the Lickey, as recorded by Terry Essery as fireman on that occasion, but freshly outshopped as she was, that was some 60 years ago.

    46118
     
  20. 83B

    83B Member

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    I don't think you mean the Lickey do you. A Beyer Garratt would struggle with 14 up the Lickey even with Big Bertha pushing behind. Did you mean 14 up Shap?
     

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