Ballast - narrow delta planform - 6 Metre
Details
Ballast - delta planform - 10 kg. 6 Metre class to design first used on the A Class design SWORD and SAILSetc 6 Metres up to 2020. Narrow winged planform cast in sand state.
Use item INS-080 to make a secure connection for the ballast to the fin that allows the ballast to be removed.
The ballast form is chosen to lower the VCG, lower the form drag and lower the induced drag when the boat is sailing to windward. Same form as used on the A Class SWORD successfully for many years.
Self adhesive coarse abrasive paper bonded to 3 mm ply to make a 'file' is excellent for fairing the surface after using a Surform blade. The 40 grade is particularly useful to start with followed by 120 grade . See SAILSetc product WD-COARSE.
Downloadables: JP 2 Jig Plan 2 and Ballast castings.
From 2020 a revised shape of ballast is available, ref. 200-6M, and this design will be withdrawn when existing stocks are depleted.