I talked to 'Ross' who assures me it's a coincidence and they sell the standard sort of pneumatic tyred, trolley wheels for a tad over £15 a piece, (Code: PW-400-8-25.4-68).
Better than that, a metre of 1", (25.4 mm), of 1.5 mm walled, stainless tube for stub axles, (under 'Accessories, axle kits': 1" STEEL TUBE) for rather over a fiver. Well under half the price from "Metals4U" and you don't have to buy nearly ten feet of the stuff at some seven times as much....
Maths never was my strong point, but Paulie, I reckon you're better off on your own, unless you and/or some others would like to go in on this and we can get it even cheaper by multiple ordering.
I checked with Ross again and he agreed that his enthusiasm had overcome his accuracy. However he is going to find out about stainless and come back to me....
It'll be 304 grade of course and we'll have to go round the buoys again, again. Can one of our experts who shall remain nameless, but I shall call Jeremy, tell us about stainless 'pipe' as opposed to 'tube', which I believe is 304 and only sold in internal diameters -
Any good looking at some of that?
On a similar note, I discovered well over a decade ago, that trolley wheels are measured in diameters that include the tyre, so 400 mm is actually pretty standard stuff and the same 15"-ish overall as a small trailer tyre
Ebay is a good source - I picked up 150mm x 12mm solid stainless bar for my centreboard pivot for less than the price of a pint.
For £10 you can buy 25mm x 500mm of Stainless Tube.... 250mm lengths stuffed into a wooden beam seem good enough for an axle?
Only £2 carriage (2nd class), far cheaper than Metals4U who charge a minimum £15 carriage.
Yes, ebay is pretty good for small quantities, I recently bought some 12mm 316 stainless bar from ebay and it was much cheaper than getting it directly from one of the local metal merchants.
I can confirm that stainless tube/pipe is usually sized as outside diameter, rather than bore. Although it's more normal (at least in times gone by) for pipe to be defined by bore, in recent years that's changed (hence the old 1/2" copper pipe is now more or less the same as the new 15mm OD copper pipe).
I happen to have a metre of 1" OD x 16g wall 304 stainless sat here if you want a couple of lumps, Chris. Let me know what size bits you need for the stub axles and I'll cut them off and stick them in a Jiffy bag to you. IF you want bits of dowel stuffed down them, then I might well be able to turn some bits up and push them in for you. In fact, I may have some acetal or similar that might fit, and might be better than dowel, I'll have to have a dig around and see what I've got lurking in the workshop.
304 should be OK, Chris, as it's not going to be immersed continuously.
I can easily cut some lengths off and clean the ends up on the lathe for you, plus shorter lengths will be easier to stick in the post. Unfortunately I can't get started on this till later this week, as I'm to Dublin this afternoon to see our builder.
I'll be back on Wednesday, so will take a look then and see what I've got lurking in the junk pile.