24
5.2 Halyard sheave box
A sheave box can also be fitted to the mast to meet the
5–10° requirement. The sheave box will not damage
the halyard, nor is it worn by the wire. Installation is
more complicated but the box will eliminate the need
to replace the halyard leads in future as above.
Newly manufactured Seldén Masts on which Furlex is
to be fitted are always fitted with a sheave box. Sheave
box kits (with assembly instructions) are obtainable
from all Furlex dealers.
5.2.1 Sheave boxes
Fig. 5.2.a
5.3 Spinnaker halyard
If the boat is equipped with a spinnaker halyard, this must be kept clear of the Furlex-system to avoid
halyard wrap. An effective solution is to lead the halyard around the upper shroud and then down aft
of the spreaders.
Stowing a spinnaker halyard parallel to the Furlex stay is not recommended!
5.4 Fitting the halyard lead
(only 400 S)
The Furlex kit contains 2 halyard leads. If the mast
is equipped with two genoa halyards they should
each run through a halyard lead. The halyard leads
can be fitted side by side or moved round the side
of the mast if there is a lack of space.
To avoid corrosion between the bronze lead and the aluminium mast, each lead is supplied with a self-
adhesive insulator sheet. It is important to fit this between the lead and the mast.
Figs. 5.4.c–5.4.e give the fitting measurements for Seldén masts. These measurements can also be
used for other makes of mast, but the angle must be checked carefully.
An angle of more than 10° may result in unnecessary wear to the halyard lead.
Fig. 5.4.a
Fig. 5.2.b
WireHalyard
Ø 7
Ø 8
Rope Halyard
Ø 14
Ø 16
Sheave box
AL-90
Ø 130
Article no.
505-012-10
505-038-01
Sheave width
16 mm (5/8”)
20 mm (25/32”)
