Luff Tape Comments;

It is best that you check your extrusion and provide
X and Y. Use drill bits to check as they are exactly
in spec.

Note that older profurl units often mis state the luff tape size, calling for the
primary rope diameter
not the finished size of the luff tape. We work only with the
finished size.

Below are some general guidelines, but don't rely
on this, rather use it to check your measurements.

Piston Hanks for Hank on  Sails;

    #1 Hanks  max wire size 5/16"     .3125   8mm wire max

    #2 Hanks  max wire size 15/32"    .468   12mm wire max

Special Note : If a sail is ordered with a wire luff, it will be 1 x 7 wire.