Re: Leg-o-mutton mast question.
- SURF plans specify 1 3/4 in. square, minimum. On several boats I have used this sail on a round mast, 2 inches at the bottom, set into a length of PVC pipe from step to just above the partner. The areas at the base are 3.0625 and 3.14 sq. in., respectively, so I feel comfortable with 2" diameter.
Dimensions, expressed in tenths of an inch, starting at the peak and each two feet down are: .875 (7/8-), 1.285, 1.57, 1.786, 1.93, and 2 inches continuing to the bottom. Build from two pieces 3/4 in. with a 1/2 in. between. Stagger all scarfs. The sail luff is 14' 3", allowing for stretch, so suggest you make the mast 16 feet, then cut off a bit later if needed.
Works fine for me.
--- In firstname.lastname@example.org, "kd" <kadonohue@...> wrote:
> I would like to use the leg-o-mutton 59 sq. ft. sail and mast on my own design. I have noted that the mast thickness is either 1 3/4" max. or 2 1/2" max.
> I am using the info from Payson's books, Gypsy, Cartopper, June Bug, etc. I thought that maybe the skinnier boats used the thinner mast, to allow more flex to spill wind. But this does not is not the case. Any ideas why the variance?