NeilPryde Windsurfing 2011

You can't go to work with a bad back.

The NeilPryde RDM masts are compatible in curve and flex with NeilPryde SDM masts,
it is the choice of the rider which one to use: Choose an RDM mast for a softer,
more forgiving feel and durability and an SDM mast for a faster response
and more direct feel.

The NeilPryde mast program is based on the Matrix System which is
designed to assure every NeilPryde sail will perform to its highest
potential when used with the specified NeilPryde mast.

The Matrix System is based around 3 performance levels; X3,
X6 and X9. Higher performance level masts will have
higher carbon content as well as use higher modulus
carbon fibers. This will reduce the weight of the
mast as well as significantly increase reflex
speed, which both result in higher performance.
So, the logic behind The NeilPryde matrix
system is that you can always choose a
level of performance regardless which
NeilPryde sail you have and be
sure that mast/sail fit will be
optimized.

We are using "Progressive flex" curve; our shorter
masts are closer to "flex-top" curve while longer
masts are close to "constant-curve"; this is
why we call it "Progressive flex".

The distance from the mast bottom to the boom is
relatively constant between allmast lengths.
Short masts are supported by the boom
head at a relatively much higher point
than long masts; typically the boom
mounting point on a 400cm mast
is at 30% of the total length
while this point on a
530cm mast will
be at 22%.

Why NeilPryde Masts?

Four reasons why it's better to use NeilPryde sails with NeilPryde masts:

1) You'll get maximum performance from your rig.
2) To ensure optimum fit.
3) Our sails are designed around our mast curves.
4) Particularly in cambered sails it is critical to use the right mast diameter for cams to have optimum function.

To compensate for much less "flexing length" above the boom, short masts will have a relatively softer top section compared to long masts where there is much more sail area above the boom that needs to be supported by the mast.

Even though we are using different curves in relation to the mast length, in the same mast length, curves will be very similar between different mast models.

Higher carbon content masts will have slightly lower IMCS than those with lower carbon content; this is to compensate for the slower reflex of lower carbon content which actually makes the mast feel softer when sailing compared to fast reflex high carbon content masts.

RDM masts will measure softer in the top than SDM masts in the same length; this compensates for a narrower diameter bottom section on the RDM mast, which would make the sail feel "top heavy" if it had the same curve as the SDM. With this compensation we are able to get a similar feel/performance in the same sail from a RDM and SDM mast.

In order to prevent any confusion we do not specify those fine differences in the actual mast specifications, but rather make sure that as long as you use a NeilPryde Matrix mast in a specified length you will get optimal performance from your NeilPryde rig.

Flex Top
NP Progressive Flex
Constant Curve