Yesterday I genuinely thought the apparently mild case of lurgi was passing, and happily went out in the afternoon with Mrs. I and Mr. O - especially for a "last ride" with Rich, (formerly of this parish) on his final day driving our local buses. (He is moving on to great big, three axle, all steering, all singing and dancing, luxury, long distance coaches from Monday by the way!) Our grand jolly only turned out to be on the hottest day so far around these parts, and whilst everyone paid a somewhat heavy price - it very nearly finished me off!
Today therefore, I'm having to stay calmly in the shade and make sure I'm more fully hydrated, so now is a good time to continue the story?!
Back then to last winter, and buoyed up by my success with the annealing trick on the little cock handle, I straightaway launched myself into making up the blower valve!
Once again, "NRM Wren" is not only no help whatsoever, but is actually downright misleading... but all is not quite lost however!
Having said that, and whilst I have no wish to be critical, I do feel compelled, if only from a desire for historical accuracy, to point out that in his otherwise excellent publication; "18 Inch Gauge Steam Railways", Mr Smithers makes some really unfortunate, and quite serious errors in his description of the Beyer Peacock/Horwich locomotives. On this particular point I dare to quote:
"The method of operation of the blower pipe was unorthodox in that the control handle was not located at the driver's end of the locomotive, as was to be expected, but instead it was placed a few inches behind the chimney."
A statement that was all the more surprising, considering that he had already dealt with at length, and provided several good, clear drawings of John Ramsbottom's preceding design for Crewe Works, and although he makes no mention, those illustrations clearly reveal an identical arrangement!
On this forum, (I cannot now remember which particular thread or posts) we have already discussed the method of operation for these railways, and I was delighted to discover further confirmation that as the locomotives, in all cases, were considered at the time as a direct replacement of horses, they were therefore
expected to be worked in the same, familiar fashion by drivers walking alongside - rather than actually riding on the almost vestigial footplates! I can also confirm (more of that later) that the necessary controls are indeed within easy reach from just such a remote position!
Although none of the aforementioned has a direct bearing on my own model, early photographs of the engines in original condition do reveal the distinctive little blower valve in it's exalted location atop the boiler, at least with reasonable clarity anyway! The only caveat, for my purposes, is that when the Horwich engines, after around ten years in service, were retrospectively fitted with saddle tanks, the valves had to be shifted aft to the only available spare, upper section of the manifold. The surprise, is that process genuinely appears to have been achieved by modifying the existing, and rather distinctive (presumably Beyer Peacock supplied?) valve bodies, rather than what might now be regarded as a simpler replacement with a new item from stock?! Exactly how that modification was achieved however is, for reasons previously mentioned, now lost forever, so some degree of speculation was my only alternative!
Returning to the task, and in time honoured style, I shaped up a section of 10mm, brass hex, to produce a mainly 8mm round bar, and then made a start on the delightful dunking method!
Oh, oh my dears!!
This was a wholly different kettle of fish!!
Being a complete chump, I really hadn't thought this one through properly beforehand!
Quite apart from the most obvious - and basic fact that I didn't want the thing in one piece anyway, as it would be utterly impossible to thread the valve body on round the curved section later, but by cutting and shaping this rather short length, I had simply left myself with nowhere near enough material to provide any reasonable amount of leverage for the bend!
Even after monkeying around the problem of the lumpy hex bit on one end, the old K&S tube used before gave up completely, and spectacularly on the first attempt! Some much longer and sturdier steel tube started to similarly fail also - but mercifully just survived sufficiently to complete the job!
Good grief! I will never, ever forget the Mother of all Battles that resulted from trying to wrestle this wretched beast into submission!
I think my face was probably quite black by the time I emerged from the cellar stairs, and made an exhausted and rather feeble declaration of triumph in front of a grand audience of one - namely my wife - and to be quite fair to her, who, when the trophy was proffered by a trembling hand, couldn't possibly imagine what all the fuss was about?!
Bless them, one and all, for they will never know why - and if the truth be told, neither do I really...?!
I did feel a bit stupid when having to cut the b****y thing right through the middle in order to solder the resulting two sections into the natty little tapered valve body!
Making another handle was almost a light relief session by comparison with what went before, but even so, I was really glad to completely abandon the workshop for a while thereafter!
Incidentally, after the locomotives were modified by the LYR, the much extended blower pipe on each one of them was run in the manner shown above, where it dived neatly under the re-shaped dome flange at the nearest point, passed invisibly round the left side of the dome itself, to re-emerge from another offset cut-out in the flange, and then in a nice, straight line past the tank filler to the chimney! That fine feature has proved to be a boon for me, as it means that the pipe at the valve end only needs to reach the dome cover - while the remaining section forward can be fixed permanently to the tank top and chimney. Having a barely visible joint, right at the point of entry under the dome doesn't interfere in any way with the sliding and removal action of our own saddle tank!
It would have been much more awkward of course, if the pipe had been left exposed, and in such a loose, cranky state as seen at the NRM more recently!
Pete.