GENINS05 Page 6
28/08/2014
* If the top fitting on your forestay is too large to pass through the end cap aperture you
will need to run the forestay through the end cap from the lower end before installing the
forestay into the foil.
The Furling Drum
The drum assembly consists of an upper (torque) tube, two flanges and a lower tube.
The rigging screw will pass through these tubes. Connection of the foil to the upper tube
is made by 2 x M6 x 12mm socket capscrews. These engage both the foil and double
hole threaded stainless steel plate which has been glued into the foil.
Tap bottom plastic stopper (18) into the bottom of the foil. This prevents the pvc sleeving
from falling down inside the foil.
Assembly on the mast
When all the above assembly operations are completed, hook up the forestay to the
mast. Be careful to ensure that the assembly passes on the correct side of all halyards at
the front of the mast and the drum is inside the guard rails. Fit a diverter (see below).
Halyard diverter
Please note that it is
essential
to fit a diverter to the foresail halyard above the top swivel
of the furling system (see drawings FS3, FS3a, FS3b). The purpose of the diverter is to
stop any tendancy of the halyard to wrap around the furling mechanism. If this happens,
the system can jam on the forestay and cause rotation of the latter, with potentially
disastrous results - the forestay can break.
If the diverter is fitted to the mast, it should be located so that the halyard makes an
angle of 15° to 20° with the forestay. This angle should be verified with the mast in the
boat and the foresail fully hoisted. This is not necessary if a clamp-on type of diverter is
fitted on the forestay.
It is
essential
to maintain tension in the forestay and halyard when furling/unfurling -
a
diverter will be ineffective if the rig is slack.
NOTE on dimensions of sail luff tabling.
Your sailmaker needs to be aware of the following:
All sizes of Z Spars luff foil have an 5.5mm internal diameter sail slot, with a minimum
slot width of 2.5mm.
