January 2006 Progress report
article by: John McMillan
Although the loco looks very odd at present with the cab set
back and the boiler jacked up off the frames, we are actually
making good progress on several fronts.
The boiler cladding continues to progress towards completion and
we are very pleased with the excellent standard of work done. The
throat-plate side sheets, large and fiendishly shaped, have now
been completed along with the centre sheets that could not be
started until the boiler was raised. In addition to the usual
awkward three-dimensional curves, each sheet has 13 holes in it to
gain access to the flexible stays on the ends of the thermic
siphons, of which more will be heard anon.
Another 'nasty' piece of cladding now finished is the cover over
the steam manifold shutoff valve. An extra strip added to the
crinolines has made the cover more rigid, which in turn ensured
that the cover could be shaped to provide a smooth transition
between it and the firebox cladding. Some restored Bulleid locos
have an ugly lump at this point, but ours is as good as the best of
them, or even a little better!
With all the firebox cladding now completed, a start has been
made on the boiler barrel cladding. This has required the boiler to
be raised for access to the underside; easy to say, but not so easy
to do with a "Merchant Navy" boiler! However, with the aid of loco
jacks and lots of wooden blocks the boiler now sits some distance
above the frames, providing much better access to the longitudinal
crinoline strips to which the barrel sheets will be fixed. Whilst
the horrendous shapes are no longer such a problem, each barrel
sheet is several feet wide and over ten feet long, heavy and
unwieldy. They wobble everywhere when handled and seem to have a
life of their own. The sheets are being fitted from the firebox
end. Whilst there is still plenty of work to do on the cladding, we
are confident of seeing this job completed during the first half of
2006.
After lurking under cover for some time at the back of
Toddington yard, the fire grate has now received its rocking
mechanism.
The original links have been cleaned up and painted for reuse,
and stainless steel pins machined to join the links together.
At the same time, the previously-restored mechanisms used by the
fireman to operate the rocking grate have been brought out of store
and fitted to the back of the firebox. All should now be ready for
the fire grate to be bolted to the underside of the firebox at the
next full boiler lift.
Meanwhile the Tender has ended its exile way down the Toddington
South Head-shunt, and has been moved to a place in the yard where
we can get at it to recommence construction. We have ordered some
parts for the tender brake gear, and we are expecting delivery of a
set of brake hanger arms very soon. Material has been obtained to
make the bearings in which these arms swing, and some enquiries
have been made about the manufacture of vacuum reservoir tanks. We
expect to see the tender brake system make a lot of progress in
2006.
In addition, hours of patient work in the machine shop have seen
the Tender Eyebolt Guide finished and a start made on the
connecting pin that holds the drawbar in place within the tender
draw-gear assembly.
One of the problems of a long-term restoration project is the
need to revisit work finished some years ago, and we are busy
de-rusting and repainting parts of the running boards and cylinder
casings. Similar work will be required on the tender, though this
will have to wait until the better weather comes in Spring.
Finally, we had an amazing piece of good luck when searching for
a tap to re-cut the threads for the caps covering the flexible
stays on the ends of the thermic siphons. We wanted an odd Imperial
size, and were resigned to an expensive exercise having one
specially made. However, on contacting a supplier dealing in
Imperial sizes, after the initial sharp intake of breath they
suddenly realised they had exactly what we needed, left over from a
cancelled order years ago. We don't know who was more surprised,
the supplier or ourselves!