Ballast - bulb - 65 & RG65 classes

Ballast - bulb. Ballast bulb, to suit 65 Class & RG65, with slot, cast in precision mould, cast state.

700-725 grams after smoothing.

A brass rod runs down the centreline to help prevent the ends from being damaged. The ballast is cast from an alloy of lead and antimony to increase stiffness. The casting process can result in cavities in the surface and inside the casting itself especially at the fine ends of the ballast. Expect to fill these cavities with epoxy or polyester filler to create a fair surface before preparing to spray the ballast. We recommend a convex Surform blade, held in the hands, to reduce significant weight from a ballast and varying grades of file to produce a fair surface before moving onto to varying grades of grit paper.

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, 50 and 60 grades followed by 100 grade are particularly useful. See SAILSetc product WD-COARSE.

We have worked hard to improve the quality, and reduce the cost, of packaging for these ballast over the last few years. It can be re-used and we will refund the cost (£4 in 2021) of the packaging materials if they are returned in useable condition.

Downloadables: JP 2 Jig Plan 2 and Ballast castings.