November 2011 Progress report
article by: John McMillan
We've had to spend some time this
quarter dealing with the aftermath of our very unwelcome visitors
who called overnight in mid-July. By far our greatest loss
was the Brake Ejector, probably the most complicated piece of
equipment on the entire loco, that required around 1000 hours of a
skilled machinist's time to complete. It was insured and we
have ordered a new casting, but the completion of our project could
well be delayed by the theft of this component.
Of course it hasn't all been doom and
gloom, and our workers have bounced back defiantly, with
considerable progress made on the boiler cladding following many
hours work by both volunteers and our part-time contractor. A
temporary staging has been built on either side of the loco to give
more room to work at the height of the boiler. It has taken a
team of six men to carefully lift each sheet on to the
staging. The technique developed was to
temporarily fit the first sheet, then position a mattress under the
boiler. The second sheet was lifted on to the staging, then slid on
the mattress round the boiler to the other side. Once the
sheets were located with a few loose screws, a lot of time was
spent adjusting all the sheets until there was a uniform fit on all
four barrel sections. This was especially tricky because of
the taper on the barrel. The final result is that there are
no excessive gaps or overlapping between sheets.
As part of the job, the name-plate
mountings were located on the boiler, not an easy task as they
straddle across two of the cladding sheets with some fixings on one
sheet and some on the other. Now we know they're in the right
place, the mountings will be taken down for drilling to accept the
name plates, then final painting.
The finishing touch will be to fit the
boiler bands which help to clamp the sheets in place and cover the
joins. The rearmost band has been fitted and it pulled the
sheets nicely into position. The front five bands need to be
lined out with black and orange stripes before fitting, as it's far
easier to do this on the bench. Research into the exact
dimensions of the lining out revealed variations between restored
Bulleid locos, and we were grateful to receive documentation that
specified how the lining ought to be. No doubt the "livery purists"
will let us know if they think we've got it wrong!
Elsewhere on the boiler, we're
progressing with fitting some of the ancillary components, with the
whistle valve, support bracket and the whistle itself being located
and fixed in position. Having made sure all was well, the
whistle was removed for storage elsewhere. We've also completed the
assembly of the blow down valve, which had been delayed by the need
to obtain two critical components, a copper gasket and a hard
graphite packing gland. Owing to minimum order quantities we
had to over-order, so we'll have some spare parts to sell at the
next Bulleid owners' meeting.
In the machine shop, the tender brake
arm has been machined from a flame cut blank. Also, the
castings for the lubricator drives are now fully machined and we
have nearly completed the innards for these components.
Work has continued on the smaller bore
copper pipe work, with all the pipes from the steam chest drain
valves complete. This finishes off all the pipework on the
front half of the loco. Progress has also been made on the steam
feed pipework for the turbo generator.
Following a major shunt of the sheds
and yard, the tender is now positioned behind the loco, and once
again we can appreciate the full size of a Merchant Navy
locomotive. This is the first time we've had the two vehicles
together to work on, and we'll make an effort to get the draw gear
fitted so the arrangement can be made more permanent. As part
of a bulk order organised by the Bulleid Owners' Society, we have
obtained a set of blanks for the tender safety links. If the
drawbar between engine and tender should ever fail, these links
will ensure that the two vehicles remain connected together.
We sincerely hope they'll never be used in anger!
As a result of our theft we've rented
secure storage accommodation away from Toddington, and all the
portable "juicy" items are now kept there. It's made working on
fittings rather inconvenient as they have to be collected then
returned to site at the close of working, but at least it keeps
them out of reach of the villains' grubby little fingers in case
they call again!