GBR 420 Class Association

Downloadable Documents
General Tuning Guide Fairly old (Rondar) general tuning guide
Speed Sails Tuning Guide Direct link to Speed Sails Website
Lenam Tuning Guide (126723 bytes) Taken from the Lenam website
Olimpic Sails Tuning Guide Direct from the Olimpic Sails website
Guide to Buying 2nd Hand Boats (12104 bytes) Don O'Donnell's (ISAF Measurer) advice on buying 2nd hand boats
Proctor Tuning Guide (Kappa) Direct link to Proctor / Selden Website
Proctor Tuning Guide (Cumulus) Direct link to Proctor / Selden Website
Allspars Tuning Guide Direct link to Allspars website
Toni Tio Tuning Guide (311500 bytes) A pdf taken from the Tony Tio website
List of Toni Tio Sail Models (96881 bytes) A pdf taken from the Toni Tio website listing their range of Sail Models
Beginner's Guide to Barber Hauling (9646 bytes) Matt Burge's beginner's guide on how much and when to Barber Haul the jib.
Beginner's Guide to Changing Mast Rake on the Water (10432 bytes) Matt Burge's guide on how to safely alter your mast rake between races
Beginner's Guide to using Mast Chocks (10488 bytes) Matt Burge's beginner's guide on when and how much to use chocks to straighten the mast.
Beginner's Guide to Mast Rake (12327 bytes) Matt Burge's beginner's guide on how to set up your mast rake
Beginner's Guide to Spreaders (16319 bytes) Matt Burge's beginner's guide on setting up your spreaders
Beginner's Guide to Main Sheet Bridles (15969 bytes) Matt Burge's beginner's guide on setting up and getting the Mainsheet Bridle the right length.
Beginner's Tuning Summary (21637 bytes) Matt Burge's General Summary of Rig Settings for beginners.
Guide to the Rule Changes 2006 (296370 bytes) Dimitris Dimou, acting Chairman of the Class Technical Committee has written a brief guide to the changes in the International 420 Class Rules (issued via International Class Website on 03/07/06
2006 Class Rules Direct from ISAF Website

The 420 is an established performance two person trapeze and spinnaker racing dinghy.

There are 56,000 worldwide. This popular dinghy is sailed at school, club, open, national and international levels. There are many second hand boats available, active clubs and excellent tuition for all levels.

Built in buoyancy tanks make the boat very safe even when inverted. The 420 is the youth development boat in the UK and in 42 other countries and is the ISAF Youth World Championship boat. Despite the emergence of newer commercial driven classes and asymmetrics, the 420 is still the top youth training boat. The majority of UK Olympic sailors were members of the 420 Youth Squad.

Specification

Length 4.2 m

Beam 1.63 m

Mast 6.26 m

Sails Main 10.25m2, Jib 2.8 m2, Spinnaker 9 m2.

Bare hull weight 80 kg min

Sailing weight 100 kg min

The ideal competitive combined crew weight is 17 to 23 stone (110-145Kg).