Update
The Seldén ‘Miracle’ 2420 section Snipe mast is the
result of many years’ work involving leading Snipe sailors
and builders from 4 continents around the world.
The mast is based on our low windage ‘2420’ section,
with internal sleeving arranged to give optimum bend
characteristics. The double side taper gives a topmast,
which is stiff sideways with good fore/aft gust response.
With a custom extrusion for the internal sleeving,
the localised stiffeners are the most efficient way
to gain the improved mast stiffness. The 2420 section
has won numerous World, European and National titles.
Results
2001 Championship Successes:
- U.S. Midwinters - 1st
- World Championships - 2nd, 3rd, 4th, 5th, 6th.
2003 Championship Successes
- World Championships :- 2,3,4,9,10 (2420 section)
7,8 (Vectis section)
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 Specification - 2420
Our standard specification is based on development
with Jan Persson, and includes specially positioned
internal sleeves to achieve optimum mast stiffness
and strength.
2420 mast includes internal halyard lock to reduce
compression in mast. Vectis mast has a hook rack for
main halyard and an extended vang plate for additional
low down stiffness.
Included with both standard masts are: - heel plug,
vang plate/ stiffener, limited swing spreaders with
adjustable angle and length, and ball bearing jib
sheave with wear guard.
Mast is supplied with drawlines for halyards to facilitate
rapid attachment of rigging.
Boom Specification - 2628
, 2229
Seldén 2628 boom section is ideal for the Snipe,
being light and stiff. Boom includes special slides,
which enable mainsheet blocks to be attached with
no need for cumbersome shackles. Boom is complete
with inboard and outboard ends with sheaves plus three
boom slides, or complete including outhaul with lever
for fast adjustment to presettings, plus internal
Shockcord system for jibstick.
For ultimate vertical stiffness, 2229 boom section
is available as an alternative.
Spinnaker Pole Specification
Rigging Specification
Includes wire main halyard with stop for 2420 mast,
wire main halyard for Vectis, plus 7 * 19 jib halyard
and dyform shrouds for 2420 mast and 1* 19 shrouds
for greater gust response on Vectis masts. The main
halyard on the Vectis mast has an extended loop which
gives minimum centre of gravity according to Snipe
class rules, but lower c of g when the mainsail is
hoisted, for faster sailing in choppy conditions.
Tuning Tips
Tuning Grid Under Construction |
| |
Crew in Boat |
Semi-trapezing |
Full trapezing |
Overpowered |
Very
Overpowered |
Wind Speed
(knots) |
5-8 |
9-11 |
12-15 |
16-20 |
20+ |
Mast Foot Position
(from c/b bolt)
|
mm |
mm |
mm |
mm |
mm |
Spreader deflection
to aft side mast
Spreader L = mm) |
mm |
mm |
mm |
mm |
mm |
| Mast rake |
mm |
mm |
mm |
mm |
mm |
| Rig tension (Loos, on shroud) |
|
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|
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| Pre bend, natural (no chocks) |
mm |
mm |
mm |
mm |
mm |
| Chocks (15mm), from neutral |
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| Bridles |
|
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| Centreboard |
|
|
° up |
° up |
° up |
| Barberhaul Yes/No |
|
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| Kicker |
|
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| Cunningham |
|
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| Outhaul |
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