The Suspense ....

Seriously, they are not big enough surely.

I will have to have a look at the rolling stock pictures to see ... it was one of those things that appears and a big question rises as to just what it is and how long it has been there, and how did it get there. Not quite industrial archaeology but still a question. I should take some measurements.

One of your comments quote 2 inches thick. Can you honestly believe that would support a railway carriage?

No, but what about a carriage from the Penlee quarry or nearby Wherry Town

I have never had to design such things, I had to design with materials in their strongest alignment, neither did I have to use pre-stressed arrangements; I remember that my mother still had the pram that she was carted around in when young, and that was just two plates of metal, sprung, and very thin, at that. I have said before that what I know of cars could be written on the back of a postage stamp, and still have space remaining.

HH Good thought, I would agree to that possibility.

That is a possibility - for that matter, looking at the axle rods, could it be off a horse carriage?

OMG what next?

Patent Sky Hooks, BS Pattern

Well, having made a search, I have discovered that leaf springs are still used in a modern form and using a newer form of leaves, with lateral frames. The basic form that is on battery Rocks was dropped from use around 1970, and the single centre bolted fixing long before that; it does appear to be a road vehicle type and not for rail use. At least that narrows it all down a bit ... I will do some more searching, into the design of the leaf ends and fixings.