Description
Available in sizes 40/41, 42/43, 44/45 and 46/47
Sizes 38/39 and 48/49 available to order (contact us by email)
We advise you to buy one size larger than your usual shoe size.
Carbon fabrics
Each fabric has its own characteristics, but you can tell them apart at a glance.
- Taffeta
Carbon taffeta fabrics form a checkerboard pattern with fibers woven at 90°.
Low warpage.
Very good dimensional stability of the fabric.
Little fringing when cut.
Difficult to drape.
Because of this difficulty of draping, taffeta fabrics are more generally used on flat surfaces.
- Twill
Carbon twill fabric is more commonly used because its drapability is better than that of taffeta fabrics.
Medium deformation. This fabric is also widely used for its aesthetic qualities. There are 3/1 twills, 2/2 twills, etc.
This means that the fibers interweave every 3 or 2 fibers.
There are different widths of fabric spindles. Their names are: 3K -10K - 20K.
One K is equivalent to 1000 threads and corresponds to 1mm width.
3K is equivalent to 3000 threads per spindle.
On a palm, whatever the fabric used (twill or taffeta) and whatever the number of Ks, there are exactly the same number of threads horizontally as in vertical.
In theory, both mechanically and by construction, the fabric and the Ks have no influence. In practice, however, we have found that the higher the K number, the stiffer the fin, and the lower the K (3K), the more responsive the fin. In terms of stiffness, there's no difference between a Sergés and a Taffetas, although the Sergé fin spins less than the Taffetas fin. The theory doesn't explain it, but that's the way it is!
The hardest part is to find a way of using them at the same time, so as to combine their two qualities without any deformation due to the different structure. This is what Denty Spearfishing has managed to achieve.
We therefore chose a 3K Sergés fabric for the water-loading phase and a Taffta fabric for the unloading phase, to make the best use of the reactivity of the two materials in their respective working axes.
Fins
The latest-generation Denty Spearfishing Black Mamba V2 fins go one step further and feature 8 Hexagon and V-shaped declivities. In other words, in addition to the two outer composite sheets, there are 7 different-length pure carbon fabrics inside.
The aim is to obtain a fin that is both powerful in front of the foot to "load" the water (Twill) and sufficiently supple and responsive at the tip to "leak water" (Taffeta). It finishes the job on its own, giving back some of the power transmitted to the load thanks to the Taffeta's 90° weave.
This responsiveness is essential for the movement to be as fluid as possible, to reduce dead time both at the top and bottom of the stroke.
Contrary to popular belief durant over the years, the "elasticity" of the liner (however small it may be) does not result in a loss of power, but rather a restitution of power at the end of the movement.
The three standard hardnesses Soft (green), Medium (yellow) and Medium Power Plus (red) are obtained by shifting the declivities forwards or backwards.
The Denty liner
The choice of Denty liner is based on the following points: Weight 400 gr Sail 320 gr
- Sturdiness: Very long life
- Reliability of size chart: Conforms to European size chart - Impact of weight: Neutral in water
- Material: Synthetic rubber with mineral filler and microbubbles.
The cut
Width of fins 19 cms: Avoids friction between fins when swimming, Length 80 cms: The shape of the leak is important for guiding the water. A fin with a straight cut remains flat when flipping, whereas the fishtail shape has the effect of constraining both sides of the fin to give it a tiled shape and thus prevent it from slipping. If we go into more detail, 74cms fins are easier to handle when fishing in moss and riprap. (Future project)
The angle
The angle of the Denty Spearfishing Mamba V2 fins is 29°.
A fin that is too flat at 0° tends to slap the water when swimming, cutting off the fluidity of movement. A fin with too much angle will enter the water much too easily, losing all efficiency in its "loading" action. You mustn't exceed 30°, otherwise you'll lose efficiency as you enter the water.
That's why we've chosen this angle. When swimming vertical, the difference in efficiency due to the angle is minimal, whereas when swimming on the surface, an angle of 29° will give the optimum efficiency of the movement.
