INTERNATIONAL 420 CLASS


INTERNATIONAL 420 WORLD CHAMPIONSHIPS 2007

420 TOP TEN - OPEN GOLDEN FLEET
Boat Spars
NZL 52716 Super Spars
NZL 52715 Super Spars
NZL 52357 Super Spars
BRA 52200 Super Spars
NZL 51984 Super Spars
AUS 51983 Super Spars
NZL 51986 Super Spars
NZL 52576 Super Spars
FRA 52772 Super Spars
ARG 50795 Super Spars

420 TOP TEN - LADIES
Boat Spars
NZL 52575 Super Spars
NZL 52721 Super Spars
NZL 52717 Super Spars
NZL 52711 Selden
SIN 50912 Super Spars
BRA 51822 Super Spars
ITA 52304 Selden
GBR 52482 Selden
NZL 52577 Super Spars
NZL 52712 Super Spars


EQUIPMENT USED AT 420 WORLDS 2007 - MASTS
SUPPLIER
Total
Top 20 Open
Top 10 Ladies
Superspars
70
17
7
Selden
46
3
3
AG+
0
0
0

420 TUNING GUIDE
The Super Spar M7 mast has a superb record of racing success. You will find this mast used by the fastest sailors around the World and the tuning information is a guide to the best performance that you can achieve.

SPREADER SETTING
Measure the spreader length from the side wall to the centre of the shroud. This should be 470mm. To measure the deflection, place a batten across the shrouds at spreader height and measure from the centre of the batten to the back wall of the mast. This should be 175mm.

MAST HEEL POSITION
Measure from the inside of the transom (on the centreline) to the back wall of the mast. This should be 2830mm.

DECK CHOCKS
You will need to control the amount of bend in the rig, which affects sail shape and power. Using two x 15mm thick chocks adjust as follows:- Nil chock for wind 0-6 knots 1 chock for wind 6-10 knots 2 chocks for wind 10-20 knots 1 chock for wind 20+ knots.

SHROUD TENSION

Using a Super Spar Tension meter measure the shroud tension at approx. shoulder height. This should read: 28 for 0-15 knots 30 for 15+ knots.

MAST RAKE
Secure a long tape at the lower edge of the upper black band at the top of the mast. This can be done by securing the tape to the halyard but you must be sure that the tape is in the right position. Measure to the top of the transom when there are no chocks in front of the mast, and you have full tension. It should be:- 6051mm (for winds up to 15 knots) 6026mm (for winds above 15 knots).

RUDDER POSITION
Make sure that the rudder s in the maximum down position at all times to give you a finely balanced helm. If in any doubt contact your fleet captain or builder for advice.

CENTREBOARD
Angle this forward in light winds. Position it approx. vertical in medium conditions and as the wind increases it needs to be raked slightly aft.
Plus many more at National and local level.

WORLD'S NO.1 PERFORMANCE DINGHY MAST MANUFACTURER