Scorpion Tuning Information

1st National Championships 2004

Seldén’s new Cumulus section, which was developed as a lightweight (0.9kg/m) section specifically for non-trapeze boats, is now available. This section combines light weight with a ‘dynamic’ gust response for performance through the range of conditions.

The rig was used to immediate success by David Wade to win the 2004 National Championships, combining the Cumulus/P&B rig package to best effect.

Seldén’s Olympus boom has the unique strength for weight characteristics necessary to achieve absolute mainsheet and kicker control.The redesigned boom slides allow direct attachment of kicker and mainsheet blocks for efficient centre lining.

Results

1st 1st National Championships 2008

1st National Championships 2007

1st National Championships 2004

Why Seldén?

Choose a Seldén mast and you will find many performance enhancing features unique to our products, for example:

  • The Seldén tapering system ensures that our tapers are minimum size and weight. This gives low windage, centre of gravity and topmast weight. This maximises your speed by enabling the topmast to react quickly to gusts and waves giving better acceleration, a smoother ride upwind and, ultimately, more races won!
  • Automated welding keeps excess heat out of the taper for guaranteed consistency and performance. The weld produced is so perfect that there is no need to mechanically grind the weld (which can induce inconsistencies). This means that once we have finalised a winning design, you can be sure that your spar will perform identically to the champions.
  • All masts are heat treated in our purpose-designed oven. This artificial hardening ensures that you get maximum performance from the high performance aluminium alloy.
  • Our spars pass through a purpose-developed bead-peening machine. This gives the mast a perfect satin finish that dramatically improves fatigue properties, giving you a mast that will perform reliably for many years.
  • Top quality fittings such as our fully adjustable spreader bracket and highly durable cast gooseneck ensure speed and reliability on the racecourse.

Sections Available

Mast Cumulus
Boom Olympus

Mast Specification - Cumulus

Standard mast includes tenon heel plug, exit slots for halyards, Tee back plates for shrouds, tee back plate for forestay, with jib box supplied but not fitted for 2:1 jib halyard option. Spreaders are fully adjustable. Pole lift is fixed eye and spinnaker sheave is ball bearing. Mast is supplied with draw lines fitted for rapid attachment of rigging.

Boom Specification - Olympus

Boom is supplied as standard with outboard end cutaway for light weight and increased clearance, inboard and outboard ends with sheaves, three boom slides, pole stow loop, and outhaul with cleat.

Spinnaker Pole Specification

Standard pole is super stiff 42mm tapered tube with piston ends and uphaul ramp.

Rigging Specification

Standard rig pack includes kevlar main halyard and cleat, kevlar pole lift, forestay, and shrouds, supplied complete with swage ends.

Tuning Tips

Spreader Length 38mm (outwards deflection from straight line)
Spreader Deflection Set so mast is straight Fore/aft with mast on rake 1.
Rake & Tension (Top black band to bottom inside corner of transom.)
Setting no. Jib luff tension Rake
Run 90kg 6950mm
1 120kg 6860mm
2 136kg 6650mm
3 136kg 6600mm
4 136kg max

 

 

 

 

 

 

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