I know it's not everyone's cup-of-tea, but I find this stuff fascinating, and there's plenty still in the queue, both from Alderney and closer to home, but this is the final part of the recent visit to Hazeley Heath and the cable-testing station of the Royal Engineers and their antecedents.
This is the building or structure the winding mechanism/s was/were housed in, it was far more substantial, but all the reclaimable steel and reusable elements are long-gone now, leaving the two outer walls, some floor mounting stuff and a protective plate.
There's enough roadway in front of the structure for flat-towing tests, as well as the extreme tests allowed for by dragging things up the ramp we looked at last time! The top of the ramp is in the far distance in both shots, in-line with the structure and roadway.
This was apparently the mounting for the main winch/winding engine, presumably bolted to the two rails with a drip-tray between them to collect all the gunk which tends to find its way out of such machinery!
Beyond it is what looks like an inspection-pit, all filled in, but the blurb suggests another machine mounting, so I assume someone has dug it and found it to be not deep-enough for inspecting things?
In front of them is this, which probably mounted a pulley to carry the cable a bit higher over to the ramp, where a similar pulley, and its mounting have long-since been removed. Also, there may be a secondary function of preventing whip-lashing broken-cables from damaging the machinery?
Heavy steel RSJ remnants hint at a heavy-duty, or over-engineered roof/shelter, designed again, or primarily, to protect the machinery and operators/observers from snapping cables, rather than enemy action, having been probably build long before the Second World War?
I gave them a quick tug, and they are set-fast in the landscape, whether they are old telephone cables or the old three-phase power-supply . . . Your guess is as good as mine!
I either read somewhere, or heard as hearsay from some MOD-procurement chaps or BAE Systems bod's, that how it works with these things, is that you decide you want a 50-ton main battle tank, for instance, you give the job to Vickers Engineering, and if you’re happy with the prototypes, order, say 250, with ten driver-training versions, plus a number of recovery variants . . . and cables (etcetera!).
Those cables then get rated at 55-tons, by the Royal Armoured Corps, who will have to use them, the MOD-wallah's up in Whitehall, agree to 55, and add another 5-ton rating to be safe, that gets sent to Vickers, who tender-out the contract, because they've now got 260 tanks to build and some recovery vehicles to design, and can't be arsed to start twisting wire hawsers! They add 5-tons capacity to the contract!
GKN take the wire twisting gig, and add an extra 5-tons 'just to be safe', before their hawser and cable division plait another few tones of capability into the finished cables! You end up with a steel-rope, which is specifically designed to be carried by 50-ton vehicles, but which can recover 70-ton vehicles from sticky mud! All that early work seems to have been done behind a little village in rural Hampshire, in the 1930's and 1940's!
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