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If the track to wire setting is the same on both sides, you can adjust the barrels equally
on each side until the desired rake is attained.
Once the spreaders arms are even on both sides and the desired starting rake is
achieved, apply slightly more tension from the diamond adjuster bolt at the mast base.
At this point carefully sight up the mast and verify that there is not a bow side to side.
Using the same procedure above make any final adjustments to the wire length to
ensure the mast is straight. Once you are happy with the straightness of the mast and
the settings of the diamonds, you can tighten the jam nuts located on the threaded
studs against the top of the adjuster nut.
Tighten the diamond wires to approximately 36 on the pro Loos gage, approximately
500-600 lbs of tension.
Note that all of these mast settings are approximate for starting your rigging procedure.
Please refer to the tuning manual for the latest settings being used in varying
conditions. Also note small differences may be required to match your particular sail to
the mast. Different sail maker combinations could require significantly different starting
points to accurately match you rig to your sail.
With the spreaders is an 11” long piece of spectra line. Feed this line through the 2
holes located on the spreader arms to act as a guide for the spin halyard.
The settings provided here are suggested starting points, and you will need to adjust
them to fit your own sail, weight and sailing conditions.
Always ensure diamond
wires have adequate tension.
If you notice your diamond wires loose at any time
during sailing, stop and tighten them. Sailing with loose diamond wires can lead to
As tension is applied monitor that the spreader bars do not shift. They
should set perpendicular to the mast extrusion. If the spreader bars are not
perpendicular to the mast, mast failure can result.
Do not over tension the diamond wires, yet ensure that there is sufficient
tension such that the windward wire will not go slack while sailing. If more
or less prebend is desired, use the rake of the spreader bars to set and then
maintain sufficient wire tension to support the mast.