Alloy boom spar - lightweight - 400 mm

The lightweight boom spar* only - no fittings. 400 mm long, 10.0 mm diameter, 0.4 mm wall thickness, a hard alloy tube made by Easton the world's best makers of arrow shafts, natural anodised, 11.5 grams.

Please refer to the headsail boom drawing for guidance concerning the use of this material.

We use this tube to make the metal trunking for our mainsheet post, ref 52-MT. However, we recommend use of glass or carbon trunking, as appropriate, to avoid long term corrosion problems.

Easton arrow shaft - 2515. 25/64ths inch diameter, 15 thousandths of an inch wall thickness.

Guidance on pens suitable for marking difficult surfaces - here.

* Spar - in order to avoid any possible mis-representation or confusion we define the term spar as the pre-2017 Equipment Rules of Sailing definition: The main structural part(s) of the rig, to, (sic) or from which sails are attached and/or supported.

AR-100