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#7353
Swiebertje
Participant

@John1642 wrote:

@Dave Mac wrote:

PS What distance is the “black band” from the tip of the mast? Mine appears not to have one. Dave

It’s actually measured upwards from the corresponding one at the goose neck, rather than downwards from the tip of the mast. You’d have to look in the class rules (which are on this site somewhere) to get the actual definitions / measurements.

Indeed. Masts may vary considerably in length. That is why there is a black band. It may be helpful to add a pop-rivet, a self tapping screw or something else at the upper black band where the main then bumps in to when it is hoisted. I have seen masts with some 4 inches extra length above the upper black band. It should be obvious that no sail will fit if it is hoisted all the way to the sheave on such a mast.

Mast measurements are all relative to the pivot hole. The position of the goose neck and the upper black band are relative to the pivot hole. (The lower black band is where the goose neck sits). The pivot hole in the tabernacle is also defined by the class rules. This together with the black bands relative to the mast pivot hole gives an exact height of the boom and the main sail top relative to the hull.

The masts come from the factory as a universal mast. (E.g. a FD has the same mast as a Wayfarer). A dealer cuts it to size for a Wayfarer, adds the hounds and the spreaders to Wayfarer specifications. He can only cut something from the bottom of the mast, he can’t cut anything of the top because of the tapering and sheave that is already welded there. The black bands show us where the sail should be. And sometimes we have to raise the mast stepping for a good fit as well. The pivot holes must line up, everything else has to be adjusted from that.