P2 Locomotive Company and related matters

Whilst the Valve gear is quietly being looked at I recently became aware that the LMS had fitted Reidinger(?) / Lentz gear to a few Horwich Crabs ' Postwar' with the results ? who knows .....but ivatt seems to have preferred and persevered with the British Caprotti

 

There were issues with the Crabs with rotary gear, not least that they were far stronger going forward than in reverse.

 

Not very clever then, though that wouldnt be a problem for a P2,

Fantastic Film, just little things like the guys brushing away the 'spray' from the hot forgings with brooms, and sewing together the cladding sheets ... amazing

 

The LMS fitted five of them with Lentz gear and BR converted them to Reidinger R C in 1953, principally for a comparison with Caprotti.

 

Wonder if there are any drawings and which office they came from...

 

I'm happy to be corrected; but isn't that a plasma cutter in the video? Some might say that's a flame; but not a flame in the same sense as oxy/acetylene.

 

I'm not 100% certain, but I think it was town gas and oxygen. The frame edges had to be annealed afterwards.

 

It is a plasma cutter but that was not the issue I was answering. The sugestion was it would have been done with chain drilling and chisel hence reference to 30s coal gas and oxygen cutting. This is more messy than plasma but did the job. Have another look at my original reply. EDIT post 460

 

I was, of course, referring to the modern video when I mentioned plasma and I guess you were referring to the 1935 one.
Chain drilling and chisel has no effect whatsoever on the crystalline structure.

 

Right, I think we're now on the same lines!

 

The Doncaster group now have some frame plates but six more plates need to be cut and the stretchers produced in order for the chassis to begin to take shape. They are, indeed, fairly quiet with regard to progress. At least they are not faced with producing a totally new valve gear redesign, new cylinder design etc. it will be interesting following the two groups over the next year or two.

 

Now this threads woken up again, where's young Sheff and his crunched numbers?..............................................

 

And all I said was a very tongue-in-cheek 'what happened to chain drilling.....................?'

 

Ah well, you know how threads jump around on Nat Pres.

It's just a mercy it's still relevant to the topic!

 

The frames for 2007 were rolled at TATA Steel in Scunthorpe today. Prince of Wales is born on St George's Day.

 

Reading this has made me chuckle. A few weeks ago I went to Shildon to bid farewell to the two Transatlantic A4s. One of the explainers told me that he sees the P2 outside the Darlington workshop quite frequently on his way to work. I didn't like to tell him that he was talking nonsense.

 

Picture from Facebook .....

https://www.facebook.com/photo.php?fbid=519950951447072&set=gm.1469286756621616&type=1&theater

 

The Austrian State railway (ÖBB) made extensive use of Lenz gear driven by Walschaerts (or Heusinger, as they call it) motion on their indigenous locos. Here are some fots of 93 class 2-8-2T’s in the ‘70’s, and the preserved 33 132, 4-8-0.

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Yes indeed, I couldn't believe the lack of protective gear when they were pouring metal, the bowler hat was standing directly in front. Those fellas knew what a hard days graft was all about. Fantastic.