In order to make maximum use of the 2.5m length limit (i.e. the limit above which boats need to be registered here), I'm considering stretching the JW 7'7'' Nutshell Pram by 5%. The 7'7'' is the sheer length to inside of planking and outside of bow and stern transom. I have factored in the additional length as a result of the transom sections outside of this.
Having had a look at the WB #60 article "Building the Nutshell Pram" (p101-113), this would be my approach:
- convert all Feet and Inches to cm/mm (sorry, used to working in Metric )
- increase the bow, stern, molds 3 and 4 spacing proportionally by 5%
- leave the bow and stern transom angles unchanged
- leave daggerboard up against mold 2
- move mast (step and thwart) back (the Wee Rob balanced lug will be used here)
- redraw inner fore keel to take account of increased length and shallower angles
- plank from patterns taken off the molds (battens along laps)
Note: I don't plan on altering the mold or transom sizes i.e. the sections.
Planks will need to be scarfed as they will no longer (except for the gardboards) fit on single sheets ...
Will this work? Suggestions?
Anything else that needs to be considered?