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Photo 025
Photo 026
The Elm Tree Pumps
There are four elm tree pumps to be made up, each is assembled in the same way but you should be careful to ensure the
correct positioning of the outlet in relation to the handle. The handles should be facing forward and outboard with the outlet at
90 degrees to the handle, facing aft and outboard on each pump (Photo 026).
The yokes and connecting rods should be painted matt (metal) black and the outlets and casing should be painted dull black,
while the brake handle should be painted walnut.
Identify and remove the elm tree pump casings (48) from the 4mm walnut sheet and glue them together, aligned in pairs to
form 4 sets.
Identify and carefully remove from the brass etched sheet the left and right handed yokes (241). Glue a left and right handed
yoke together ensuring that they marry exactly. Also make sure that the small dimples, on the profiled face of the yokes, face
toward each other. Take care at this stage not to glue the dimples together as they will need to be separated when the pump
handle is 'sprung' into place. Make up four sets of yokes.
Glue the completed yoke assemblies to the side of the pump bases ensuring that it is vertical; the small lip in the yoke sits
against the top edge of the base as shown on Plan Sheet 2, 'Elm tree pump assembly'.
Identify and remove the brake handle (242) from the brass etch sheet and, using 0.75mm brass wire, fashion a small loop in
one end so that it fits into the larger hole of the brake handle and forms the connecting rod. Pass the rod through the casings
and position the handle onto the pivot formed by the two dimples of the yokes.
The handle should be glued into position at your desired angle and the connecting rod can either be trimmed flush with the
bottom of the casing or left protruding by approximately 5mm to use as a locating 'lug' when fitting the pumps to the deck.
The outlets should be glued to the pump casing orientated as stated previously; they are fashioned from 2mm dowel. The
finished assemblies can now be glued into place.
Jeer Bitts & Main Topsail Sheet Bitts
Identify and remove the jeer bitts (73) and the topsail sheet bitts (74) and the bitt pin cross pieces (75) from the 3mm walnut
sheet.
Drill 1.5mm sheave holes through each bitt centrally, fore and aft, approximately 3mm below the notch for the cross pieces.
Glue the cross pieces into the notches of the bitts centrally so that the distance between the bitts is 19mm internally, and 25mm
externally as shown Plan Sheet 2, 'Main hatch & deck reinforcement'. When the assemblies have completely dried they
should be glued and pinned centrally into position on the deck reinforcing timbers as shown with the cross pieces both
orientated to the aft and with the jeer bitts aft of the sheet bitts.
Main Deck to Quarterdeck Ladders
Identify and remove the main deck to quarterdeck ladder sides (104) from the 2mm walnut sheet. The treads of the ladders are
from 1x5mm walnut cut to a length of approximately 8mm to give an overall width to the assembled ladder of 10mm.
To assemble the ladders, slot a tread into the top and bottom of each ladder and glue into place, ideally a small jig should be
made to keep the assembly square. When dry, the remaining treads can then be pushed into the slots and brushed with watered
down PVA. Varnish to seal the assembly.
When the assemblies are thoroughly dry, they can be glued into place as shown Plan Sheet 2, 'Main deck layout'. In order for
the ladder uprights to sit flush against the quarterdeck bulkhead, it may be necessary to file a small notch in the first tread to
allow for the curved pillar upright (Photo 021).
©
22
2004 JoTiKa Ltd.
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