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Enjoy the next generation of sportsboats. Canting
keel is not just about speed, but about convenience.
"Yacht racing has entered an exciting new
phase with canting keel as a standard feature on boats like Backman21
and Backman31. Everyone has an opportunity to sample this brave
new world for themselves – Hans Backman, designer."
The major advantage with a canting keel is that it's
possible to reduce the overall displacement with the kept righting
moment. Low displacement is an important factor when you are getting
up on the plane.
Canting keel and light displacement – together
they offer a quality of acceleration and speed that engages all
the senses.
The beauty with the canting keel is that it’s
giving the same righting moment as one crew member in a trapeze
or two on the rail. You can go out on a breezy day with two mates
and just go sailing because the canting keel will do all the work
for you.
The canting keel also equalises different crew weight
when racing in one-design, e.g. a lighter crew can still power up
the boat fully in wind forces up to 4-5. In really strong winds
the heavier crew will of course have an advantage as will the lighter
crew in lighter winds. The extra feature of a canting keel engages
all members of the crew both up wind and down wind.
• Crew weight equaliser
• Reduce displacement for a given righting
moment
• Low displacement = boats planes earlier
See illustration to the right, comparison between
a boat with a fixed keel and a canting keel.
In real life, see top photo when boat is sailing upwind
with the keel fully canted. Wind speed approx 25 knots plus gusts
and boat speed approx 8-9 knots. Notice how little the boat actually
heels.
Both Backman21 and Backman31 have a mechanical solution
for their canting keels. Easy to handle, fast and safe with block
and tackle on Backman21 and a Magic Wheel on Backman31. The mechanical
solutions are also cost effective to produce compared to hydraulics.
The keel on Backman31 is designed with adjustable
wings to create lift and increase the righting moment when sailing
upwind, this feature replaces a daggerboard.
Magic Wheel, a excellent mechanical solution, no expensive
and complicated hydraulics needed. |