>>Beyond 10% they start to get dangerous as the material that is sewn
in to form the draft of the sail does not get taken in any faster than
the rest of the material. This pushing of the draft material back into
the unfurled portion of the sail increases the draft of the remaining
sail area dramatically. Increasing draft is opposite from what is
desired when trying to flatten sail and/or reef to deal with building winds.
Not to be a contrarian, but I don't think I've never witnessed this^.
The RF boats I've salied, four or five different J105s, a C&C 27, a
Hunter 28.5 an ETAP 30 and an Omega 36, among others, all had flatter,
virtually draft-free sails when
a drum furler was used to significantly reduce sail.
If the max draft on a theoretically perfect genoa is at 35-40%, when the
sail area is reduced, that max draft spot is going to be drawn up closer
to the
furling drum, leaving the relatively flat aft 2/3rds of the sail
unfurled as the resulting foil.
Anyway, that's what I've observe........ but maybe I was seeing things
all wrong?
possibly?
tf
