It was done in this way for Spitfire P9374 – new-manufacture DH DP.55409 blades copied from one survivor, with no original drawings. But it was not cheap!

If I understand what you are hoping to do, I guess the problem you’ll have is that there may not have been a Ham Standard 23E hub produced to fit an SBAC 6 spline. I am struggling to think of an example of a British SBAC 6 spline engine combined with a US-made 3-blade prop..

There are some Beaufighter DH hubs around, if not Typhoon ones. Blades are a more interesting problem.

Hi Graham

I’m a lot more comfortable with the numbering of blades for bracket types (I’ve written out a table of these on another thread) but this decoding seems likely enough for me.

The other interpretation is design 1, Right-hand (both 1 an 0 were used, and 5 and 6 for LH), 57 inches removed! Less likely, but possible if this is a paddle-blade.

The 5500 still fits, as this was a convention used on hubs to indicate shaft size as well as shank size, the first 5 being the ‘thousand series’ (ie shank) and the second the SBAC shaft size. Of course, this second 5 didn’t appear in the blade numbering, as it wasn’t a facet of the blade, just the hub it was mounted on.

Do you have the blade, and what is it from? At 14 feet it’s quite big to be a SBAC 5 shaft prop

I’ll have a crack at cross referencing with HS later.

Health warning.. as PandP has said, you get so far, believe you have established a pattern, then find an exception..

Agreed.

Who’d have thought it?

As long as it doesn’t become another ‘ism’ 🙂

Has my graph been censored? 😉

CD, here’s a picture of it. Now, where are the shares held on this graph, and where are the people actually producing something? It may be old fashioned – almost un-PC, even, to point it out, but.. this shape has got more extreme over the last 40 years, not less.

[ATTACH=CONFIG]245835[/ATTACH]

This is the POST tax graph, by the way – imagine it without progressive taxation. And yes, of course it’s a continuum. There are worker/shareholders, there are not-well off company owners and builders with millions. It’s not us and them. If it was there’d gave been a revolution long ago, and this is why Marx may have been wrong about the inevitability of revolution. While everything shades in to everything else no battle lines may be drawn, and nor should they be.

The last gasps of oppositional class conflict were eradicated with the overwhelming growth of the politically and socio-economically fuzzy new middle class over the last few decades. But it is about where you apply change, why, and how it shifts the continuum. This is still a valid argument, and with the increase in inequality, perhaps a more urgent one?

And on another note, in 2016 joining a union is possibly one of the most civilised (in the original sense of the word) and fundamentally democratic things a member of the British public can do. Certainly allowing the formation of unions – whereby the welfare of many outweighs the wealth of a few – is the action of a democratic and civilised government. China does not have such a Government. It did go through a phase of speculative free-marketeering, though. You will notice where they are heading in terms of economic ‘success’ with this now. They have managed to set up a global ‘lose/lose’ situation. Another victory for big-C Capitalism, right?