Re: [bolger] More Mast Alternatives
- Had a look through some old 'How To Build 20 Boats'. In with
the mix between runabouts with fins and Sea Scout cruisers
by William Garden and other serious boats there are lots of
drawings re: rectangular box spars.
I actually didn't find more than one plywood mast. Which
makes me think these might really be more of a Sam Rabl
innovation than I thought.
The examples in the 3 mags mostly specified the purest Sitka
Spruce, and none was free standing. I noticed that, while
they had various fillers here and there, none had a big
solid plug at the bottom. That's further confirmation to me
that for a freestanding wooden mast, a substantial solid
plug is very important.
There was one boat showing another way to have a plywood
mast. This was 'Guppy', cuter than a Swan shaped pedal
boat. a 5' x 32" children's sailboat. Meticulously laid out,
deep keel, washboards, paddle and all come from one sheet
each 3/4 and 1/4 inch plywood. The rig is is the four sided
sprit, something under 16 sq. ft.
A pair of blanks for the 5' x 2 1/2" mast come from one
edge of the 3/4" sheet. Glued together and tapered
for'n'aft, it isn't kidding for this little boat.