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60163 test runs

Discussion in 'What's Going On' started by jackprentice2007, Nov 4, 2008.

  1. palace gates

    palace gates Guest

    Any news on how fast it went?
     
  2. NDTSDN

    NDTSDN Part of the furniture

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  3. Tracklayer

    Tracklayer Resident of Nat Pres

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    Given that it was a 75mph test run, I'd guess at 82 1/2 or there abouts... ;)
     
  4. RalphW

    RalphW Nat Pres stalwart Staff Member Administrator Friend

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    Well, knowing the length of a coach and timing the train past a fixed point, it was not to difficult to work out the speed from my video. And the answer is 75 +/- 4mph...
     
  5. Alberta 45562

    Alberta 45562 Part of the furniture

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    I wonder........
     
  6. richard_3672

    richard_3672 Member

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    General inquiry.. How would that be worked out?
     
  7. Tracklayer

    Tracklayer Resident of Nat Pres

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    Speed Distance Time
     
  8. Tracklayer

    Tracklayer Resident of Nat Pres

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    200 metres of train, taking say, 6 seconds to pass, is a little under 75mph...
     
  9. RalphW

    RalphW Nat Pres stalwart Staff Member Administrator Friend

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    Or base it on 60mph = 88 feet per second and use a little simple maths.
     
  10. palace gates

    palace gates Guest

    I was hopeing that someone on the train might have been able to give us an answer from a GPS.
    I understand that there was something very special on last nights train.Not the fastest ever but the quickest from start to stop.Can anyone confirm?
     
  11. green five

    green five Resident of Nat Pres

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    In the Northern Echo Video there is a guy with a lap top recording several different things including the speed which I think says 75 while they were filming the screen: http://www.thenorthernecho.co.uk/video/regional/61128/.
     
  12. RalphW

    RalphW Nat Pres stalwart Staff Member Administrator Friend

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    Nobody connected with A1SLT is going to admit more than 75 are they..

    Just picked this up from a search,
    "Sound travels about 350 metres per second. A train travelling at 120 kilometres per hour is moving 33 1/3 metres per second, or roughly one tenth the speed of sound. From Doppler's formula, we can expect the frequency of sound approaching the train to be shifted to 10% higher pitch, and sounds receding shifted to 10% lower pitch, roughly the difference between two adjacent white keys on a piano keyboard."
    I was surprised that at 120kph, just by chance 75mph, you get a 10% shift in pitch, no wonder it was so noticable, 20% between approach and departure. :-k
     
  13. saltydog

    saltydog Part of the furniture

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    She was on a 75 mph test run so the fastest she would have gone is 75+10%=82.5 mph.
    We'll just have to be satisfied with that. :smt002 After all speeding on the railway is frowned upon by the powers that be and that is why you sometimes see the little men with radar guns on the lineside.
     
  14. gresleyman

    gresleyman Member

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    Right then, thinking caps on a moment, know one in there right mind is going to confirm speeds because of the implications for the futurue decisions regarding the potential 90mph testing. The other consideration is that this was a test of the loco and as such an inspector was on board to officiate and make sure everything was fine. I do know what speed was ahcieved however it is neither right nor proper that i disclose it on this forum for the reasons above. Be satisfied that she did very well and has succesfully got this far and will continue to be a beacon for the preservation movement as a whole.

    Chris
     
  15. Spamcan81

    Spamcan81 Nat Pres stalwart

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    With the greatest of respect you'd have been better saying nothing. By saying that you know what speed was achieved but it's neither right nor proper to disclose it is going to fuel wide speculation that it was well in excess of the 75 + 10%. After all if it was within permitted limits you would have told us wouldn't you? :smt002
     
  16. hatherton hall

    hatherton hall Well-Known Member

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    Goodness me! It brought a tear to my eye just watching footage on You Tube. Heaven knows what it must have been like not only seeing her race through the likes of Northallerton but also arriving at Newcastle.

    It really is time to pinch ourselves. 2008.UK. Brand new steam locomotive on the mainline running at 75mph and hopefully higher later.

    The UK built the first steam locomotive and it is highly probable that it has built the last.

    We should be very proud of the Tornado team for doing something that most sane individuals would have thought impossible.The birth of an A1.

    I am moved and I am proud.

    I started train spotting in 1960, the year of the last BR built loco, Evening Star and 48 years later, I have witnessed something that I could never have dreamed of back then.

    All of those years ago, we used to chalk things on engines in the 60's, typically "Steam Forever" and "Steam Supreme", etc.

    My God it has happened! Steam is back. And new steam to boot!

    Does anyone know when the assessment for 90mph running will be made? Are they going to allow a test run at 90mph?
    If so, then I will leave leafy Berkshire to witness what would be a magnificent event!

    Nick
     
  17. Matt

    Matt Member

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    Put it this way, work in progress.

    Bear in mind freight trains are only permitted to run at 60 mph and here you have something heavier than any freight loco that they want to run at 90. What does work in the A1's favour however is that it's not exactly going to be happening every day on every route...watch this space.
     
  18. palace gates

    palace gates Guest

    Good to hear that the 90 mph thing is still on the table.As long as it gets approval where the line speed is better than 115mph and the timings issued allow for 90mph I for one will be a very happy bunny.
     
  19. Alberta 45562

    Alberta 45562 Part of the furniture

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    Would be nice,just depends what they decide,does it have to do a 90mph test run?
     
  20. Spamcan81

    Spamcan81 Nat Pres stalwart

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    Just imagine it. A 90mph test run is booked and to get its ticket it needs to do 90 + 10%. I'll leave you to do the maths. :smt002
     

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