Well, marten make an eliptical mendrel where you may roll up a 3DL north.
However in manual use you never have probem? Do you think will be safe...
Do you know "johnmast" mechanism.
My fear is" what happen when system fail?"
I'm going to install in a sailboat for a 65 owner so if he will...
I designed some boats with hydraulic system, that are not easy to use. Anyone know something about the manual system?
design competition are very very useful for organizer and professional designer, especially if partecipants are not professional boat builder.