But a pen overshoot will happen every time. Assuming its driven by something like a solenoid. The pen will accelerate up or down but when it...
I'm not sure you're understanding of what he's saying is the same as mine. We don't have a sine wave trace on the paper. The one second "tick"...
As I understand it, David Andrews has demonstrated that the recording paper was not moving at a constant speed, but was slowing down and speeding...
That's IMHO a very good piece of analysis by David Andrews. I particularly like the way he's picked up the cyclical error in the paper speed...
But are there different perspectives for this? Now I have exactly no actual information on the subject, this is all guessing. However it seems to...
Its difficult to imagine why the current owner would want to sell the boiler without the frames, although I suppose half a buyer is better than...
Might also be interesting to compare the mileages of different route restrictions on the different lines. From what I gathered from Simon's book...
Build is interesting of course, but its the (more time consuming to calculate) size of the fleet that really matters. Also age. One might expect...
In "Master Builders of Steam" H.A.V. Bulleid claims that Churchward always referred to it as the de Glehn bogie.
Not none, but few. The major lines are concentrating on infrastructure and protecting what they have (or selling it to Japan).
Not really no. All the Granges were built with extensive use of parts from locomotives withdrawn specifically to act as parts donors (also all the...
A heavy fuel oil, no doubt with pretty unpleasant combustion products. It was cheap though.
Seems likely, the GWR ones retained steam brakes and never had vacuum brakes. That required a different version of GWR ATC which didn't have...
Its always going to be a bit arbitary isn't it. D49 is classed as "light express passenger" in my 1958 observers book, B17 as express passenger...
This may be of interest then if we are discussing oil firing. Thanks to Chris Hext, formerly Swindon drawing office, for giving me this copy. As...
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