2.4 Diamond tension
Tools needed:
- Wrench 17 mm
- “Loose” tension gauge (xed)
1. Put tension on the diamond wires by tensioning
the diamond adjuster bolt with a wrench size
17mm. Use the “loose” tension, or an equivalent
gauge to measure the tension on the diamond
wires.
Basic setting Nacra F18 Evolution
* Set the diamond wire tension at 35 (loose), 225 KG
for 4mm wire.
2. After putting tension on the mast check if the
mast is straight. Take a look along the sail
groove from mast base to mast top.
If the mast is bended to
starboard:
• Unleash the diamond tension
• Detach the
port
diamond wire at the tang and
shorten the wire with 1 full twist clockwise.
• Attach the
port
diamond wire at the tang and
put tension on the diamond adjuster bolt again.
Redo this process if necessary
If the mast is bended to
port:
• Unleash the diamond tension
• Detach the
starboard
diamond wire at the tang
and shorten the wire with 1 full twist clockwise.
• Attach the
starboard
diamond wire at the tang
and put tension on the diamond adjuster bolt
again. Redo this process if necessary
Diameter wire Minimum load
(KG)
Maximum load
(KG)
4 mm 195 KG 360 KG
Overdoing the minimum or maximum
diamond wire tension can cause severe
damage to the mast while sailing.
3. Tape the rings of the diamond tang when done.
2.5 Spinnaker halyard
• Tape the ends of the bale line to slide easily
through the pre drilled holes!
1. Take the spin bale line and a carbo 29 mm T2
block.
2. Feed one end of the spin bale line through the
pre drilled holes in the mast and tie a gure 8
knot.
3. Feed the other end of the spin bale line through
the middle of the 29mm block and feed it
through the pre drilled holes and xate it tightly
with a gure 8 knot.
4. Install the block line to the top of the block and
the strapeye above. Fixate the block on the
same height as the bale line is positioned.
20
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