# Your Sail Quiver:
*Playing the percentages*
### by: Marc Lefebvre
Having a balanced
quiver is vital to maximizing your time on the water versus your local
conditions. Very often boardheads, like you and I, have overlaps or gaps
in our sail quiver which cause us to either spend too much money on unneeded
sails or not having fun due to not have the correct sail size. Although
being overpowered can be a rush, being under powered could bring you to
the point of suicide. Choosing a balanced quiver comes down to simple
mathematics.
ARGH!, Math! You all
say... Well it really is quite simple if you have a calculator handy.
First you must decide how many sails, what sail sizes you wish to cover,
and your main sail which to build your quiver around. If you think that
having balanced quiver means having sails that are all one square meter
apart, you are wrong.
For example try the
following:
1 - 4.0 / 3.0
= 33%
1 - 5.0 / 4.0
= 25%
1 - 6.0 / 5.0
= 20%
1 - 7.0 / 6.0
= 17%
Notice that the gap
between a 3.0 and a 4.0 is 33%, but the gap between a 6.0 and a 7.0 is
17%. This is not balanced. You want to choose sail gap sizes that are
all the same. (ie. all 20% or all 15% ...)
This can be accomplished
quite easily by first choosing your main sail size. For this example lets
choose 6.0 as our main sail. (ie. the one we will use most. ) Next lets
choose a 15% gap for our sail quiver because we are into racing and want
to cover the spectrum of conditions. Now just multiply the 6.0 by 1.15
(the .15 is the percentage amount, the 1 carries the previous amount.
Just like sales tax. REMEMBER to round to the nearest tenth, 5.22 = 5.2
and 5.25 = 5.3) That gives us 6.9. This is the next sail size that would
create a balanced quiver. Next take the 6.9 and multiply by 1.15. That
gives us 7.9. This is the next sail size. Now lets compute our sail sizes
that are smaller than 6.0. To do this just divide by 1.15 to get this
result. This comes out to 5.2. Now divide this by 1.15. This comes out
to 4.5, so on and so forth ... Now you have a balanced quiver.
The next step is finding
the right sail sizes. All sail manufacturers do not make sail sizes in
0.1 increments so you need to locate the sail sizes that most closely
match your quiver on paper. This may take some adjustment but don't worry
about plus or minus 0.1, if it is more than 0.1 than you may need to shift
the whole quiver, to fit a particular brand. Thats ok though because as
long as the gaps are uniform it is ok.
Here are some example
sail quivers and uses.
Wave Quiver: gap(10%-13%)
(10%) 3.0, 3.3,
3.6, 4.0, 4.4, 4.8, 5.3, 5.8 (Ideal-Wave)
Slalom Racing
Quiver: gap(13%-17%)
(15%) 3.0, 3.4,
3.9, 4.5, 5.2, 6.0, 6.9, 7.9 (Ideal-Slalom)
Slalom Quiver:
gap(17%-22%)
(20%) 3.0, 3.6,
4.3, 5.2, 6.3, 7.6
Budget Quiver:
gap(22%-25%)
(25%) 3.0, 3.8,
4.8, 6.0, 7.5
With any of the above
quivers you just can't go wrong because you have mathematics on your side.
When you start using a more balanced quiver it becomes apparent that it
is more important to have your gap sizes evenly spaced out than the actual
sail sizes. It just doesn't matter if you build your quiver around a 5.5,
5.7 or 6.0, as long as the gap sizes are uniform. Give this method a try
and you will not be disappointed. You will find you will enjoy your time
one the water more and not have to worry about having the right sail.
**So RIG UP!**
Marc A. Lefebvre (lefebvre@iwavesolutions.com)
**Copyright
© 1995-2004 by Marc A. Lefebvre. All rights reserved.** |