(Also, on a side note, I am actually grateful that Cecil J Allen was not on the train. I do not have the confidence of his recording skills nor...
Hi Michael, I have also hesitated to respond to your post. Are you writing from secondary evidence on this or do you have a copy of the...
Facilitated? Or under cover of…internal LNER documents definitely suggest it was the latter!
A bit selective there Tom, I did say: My point being exactly what you are saying - the average speeds and point to point timings do matter, not...
But then you are going, I assume, on average speeds achieved over the distance for the Cheltenham Flyer, rather than any absolute speeds, which I...
Legend, thank you.
As I recall, Gresley borrowed the LMS one to calibrate the NER one. It turned out the LMS one was not calibrated properly. I need to go and check...
So things to consider for any discussion of the Mallard run: Positive factors: Short formed train (six twins plus one dynamometer car)...
I think though we see it as a mistake now because we are better informed. They were pioneering wind tunnel testing and development. Of course...
I think for the purposes of this thread, it is better to focus on the train based research.
I feel there’s a need to separate out the understanding of aircraft and trains. One of the reasons why the NPL tests are significant is that...
Hi Jim. I enjoyed your pun. That gave me a chuckle. I agree it's a failure of the equipment. But we should be exploring all avenues and at least...
Thank you for this. I need to point out that even on the LNER they never assumed the whip in the centre cylinder gave more than 10% than the...
No, it does not. What it shows is a series of five second intervals for which the average speeds over those five second intervals were taken,...
There is one mechanical feature about the A4 Pacific that seems to have been forgot about, but is well known and is even claimed by members within...
Yes indeed, that is the point.
Precisely.
Hi Michael, You’ll appreciate that I have the actual roll in front of me. On that I think I’ll leave it. Best wishes Simon
There’s no “if”. And that is precisely what I am doing with it.
I stand corrected on that point. Nope. That’s just what has been reported by secondary sources. The actual dyno roll shows Mallard continued...
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