Babysitters Dig Update - August 3rd. 1996
Progress at Babysitters' during Clwb50
by Chris Grimmett
Graham
Christian with his winch
All pictures on this page are clickable for better, but larger, copies.
July 27th. to August 4th. saw Clwb50, the 50th. Anniversary of South
Wales Caving Club and many members were in attendance for the whole week.
During this period, great progress was made with Babysitters' Dig, assisted
to a considerable extent by the availability of Graham Christian's newly
constructed bucket hauling winch. Several days of digging, with 5 people
per day on average, resulted in the extraction of several tons of material
and further landscaping of the spoil heaps on the surface beside the dig.
The winch is based around a 95cc Suffolk Punch lawnmower engine, driving
through the original centrifugal clutch then via various chains and sprockets
to give a 30:1 reduction ratio onto a 6" diameter drum holding 50
metres of 4 mm stainless steel cable. A Mini brake drum and ratchet mechanism
protects against unscheduled dropping of full bucketloads on the unsuspecting
diggers at the shaft base and spoil is emptied from a tipping bucket into
a wheelbarrow for disposal.
The
winch and our chairman, Fred Levett, undergoing trials.
The winch was tested at SWCC headquarters in Penwyllt to a lifting capacity
of 100 kg, at which point clutch slip prevented heavier loads from being
handled.
With further work on replacing the clutch material, it is hoped to increase
this capacity as at 100 kg the engine power of 1� h.p. was not the limiting
factor. On one day, a rock weighing in excess of 120 kg was shifted out
of the shaft by giving the winch cable some manual help.
On the best day and over a 7 hour period, the team removed 90 buckets,
each containing 40 litres with an estimated total weight of at least 5
tonnes. This was at the expense of only just over 2 pints of petrol and
generally agreed to be very good value indeed.
Sam
looking like he's entered the World Jenga finals.
Sam Moore provided engineering expertise and installed some new timber
and metal work to protect diggers working in the rapidly expanding right
hand rift which is believed to be the way on. If this proves to be the
case, the timbering will be used to stack spoil and the rift opened up
below this point only.
Simon Amatt proved once again how useful can be the judicious use of
a sledge, although due to a mis-hit, he is now looking for a new shaft
to the 14lb. hammer.
The dig continues to attract the local wildlife although there is evidence
that its arrival at the shaft base is somewhat unintentional. The Clwb
50 week score was 3 frogs and a dung beetle.
The other wildlife recorded in the dig during the week included Andy
Amatt, Simon Amatt, Phil Buckberry, Graham Christian, Chris Grimmett and
Sam Moore. Others came just to wonder.
Some
of the main players Graham
and Fred
Graham
and Phil Simon
in digging clothes, (1996 fashion).
Simon
at working face Sam
and pick
Over the August Bank Holiday weekend, further progress was made
despite inclement weather and a large quantity of spoil was once again
winched out. The floor level in the shaft was taken down by about three
feet and the major discovery was the apparent closing down of the rift
at the right hand side of the shaft.
Since the left hand side has already done the same, the way on seems
quite definitely to be down. During the digging, a small hole appeared
in the centre of the floor and it was possible to lose buckets of water
down between loosely packed rocks and mud.
As the rain increased on day two however, the conditions at the shaft
base became muddier and any holes down were blocked.
When the rate of water coming in from above and through several side
fissures exceeded the rate at which buckets could be removed, the diggers
removed themselves instead.
The next major assault is planned for the November 5th. fireworks weekend.
(2nd and 3rd of November).
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