Tuesday, June 21, 2011

The "BLACK FLY" Dinghy 8: Sailing Rig Details.

The Black Fly and my Eastport Pram share the same mast, boom, and sail. Originally for the Eastport Pram, the rig is a copy of the popular Sabot rig, which I much prefer to CLC's standing-lug design.

The Mast: is made from 1 1/2" 065 aluminum tubing. I cut mine in half to allow it to be stored in the forward cabin of the Vega. It's joined with a 12" piece of 1" aluminum pipe (1.3" OD, 0.125 wall thickness). The pipe is a loose fit in the mast tube, so a few wraps of electricl tape were used to fatten up the pipe to a nice friction fit. There is also a 36" length of tube, same size as the boom tube, inserted into the base of the mast to stiffen the lower section .... with more good old electrical tape!

The Boom: is made from 1 1/4" 065 aluminum tubing, with a laminated plywood jaw on the end that fits around the mast.

Both mast and boom are capped with PVC plumbing caps. Again, electrical tape was used to make a tight fit.

The sail has a sleeve along the luff that the mast slides into.

The foot is loose, and attached at each end with a piece of webbing with a snap-together clip.

An outhaul for the clew runs inside the boom, over a built-in pulley.

The outhaul exits midway along the side of the boom, through a teardrop-shaped slot that acts as a jam cleat

Spar Lengths:
Mast: lower half 81", upper half 75 1/2" (not including joining pipe).
Boom: 80 3/4" plus 5" wood jaw.

Sail Dimensions:
Luff: 10' 6"
Leech: 12'
Foot: 6' 5"
The sail has no roach, so needs no battens.

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