> > I don't think that's a hundred-year-old document.
"Clive George" <
[email protected]> wrote:
> Ok, 99 years - it does say 1907 on it, which I would guess is when
> it was originally produced. It may have been coped since then, but
> that only makes things worse in an unsurprising manner.
The date of introduction of the hub is 1907, but the diagram is drawn in
the same style as those of many later hubs on the site. The hub shell in
the picture marked 1907 is dated 1908 0r 1909 (hard to tell).
> > http://www.sturmey-archerheritage.com/photos/pic-248.11.jpg
>
> Is rather newer than the one Jobst was talking about. And is quite
> a nice picture too.
Right, but many of the exploded views presented on the site - even of more
modern hubs - have evidently been copied and retouched in the same fashion
as the example showing the hub from 1907. Some resemble sketches made from
dismantled hubs at a later date, but as the handwritten annotations show,
these aren't engineering drawings. They probably weren't produced by
Sturmey Archer (who had skilled draftsmen) and are certainly not
comtemporary with the hubs.
I'd guess that someone has either made hurried hand copies of older
material, or in some cases, maybe an enthusiast or collector has dismantled
the hubs in his collection, produced sketches, and annotated his findings.
Compare the K-series from Tony Hadland's site:
http://www.users.globalnet.co.uk/~hadland/sa/k.pdf
with the same model from the Sturmey Heritage site:
http://www.sturmey-archerheritage.com/views/view-25.gif
The former contains material that's obviously been reproduced from
contemporary SA documentation, plus later annotations by Jim Gill. The
quality of the image has suffered by repeated mechanical reproduction. The
latter has obviously been hurriedly redrawn from an original SA document,
and has then suffered degradation by mechanical copying.
James Thomson
