eXploder Slalom windfoils (PWA Slalom)

Windfoil slalom is a new, exciting, rapidly growing format, adopted by PWA in 2020. Due to higher speeds (in excess of 30 knots) and reach / broad reach courses only, this discipline requires different components, mainly wings and fuselages. Slalom foil doesn’t need that much low-end power as course racing foil, but needs to provide low drag and an exceptional level of control at high speeds and during tight gybes.

In 2020 the eXploder SL foil, ridden by Maciek Rutkowski won the year’s only PWA World Tour event in Croatia!

Our brand new 2021 slalom windfoil set comprises of following components, all fully demountable:

1. eXploder slalom foil uses our regular, tried and tested, super Ultra High Modulus (UHM) stiff 95 cm mast.

2. Slalom front wings are designed specifically for the discipline:

Large slalom wing: area: 700 cm2 / span: 85 cm

Medium / All Round slalom wing: area: 650 cm2 / span: 79 cm

Small slalom wing: 570 cm2 / span: 70 cm

3. Slalom fuselages are shorter and have front wings positioned closer to the mast, to provide better speed and control on reaches. We provide two specific slalom fuselages:

Light wind: 110 cm / mast front mounting position 400 cm form leading edge of the front wing

Regular / high wind: 100 cm / mast front mounting position 360 cm form leading edge of the front wing

4. Slalom specific rear wing (230 cm2; 43 cm span; not compatible with CR fuselage). (v36)

* – Although there’s full mounting compatibility between all eXploder course racing / slalom mast and fuselages, the wings are only compatible with their discipline specific fuselages, so it’s not possible to mount slalom wings to course racing fuselage or vice versa.

Complete windfoil Slalom set is provided with one piece of each: mast, front wing, rear wing, fuselage), set of eXploder covers, set of screws (except 2 tuttle box head screws) and an instruction manual.

For sailors, who would like to cover the whole range of wind / sea conditions in slalom, we also offer a super set with three front wings and two fuselages (regular and light wind).

Caution: eXploder windfoil is a high performance equipment, finished to the highest standards to achieve maximum performance on a race course. Please be extremely careful while mounting and using it, as trailing edges of the mast and wings are very sharp!

Super stiff, torsion resistant UHM carbon mast

It’s one thing to create a foil mast that is stiff sideways, the other – to create a mast that is torsionally stiff. This is torsional stiffness that makes the controllable foil, especially on reaches / downwind courses. Bottle-shaped outline, special inside structure and material use allowed us to create extremely stiff mast in both planes (sideways and torsional).

Flat upper front surface of mast tuttle box head allows to use shims for changing mast rake and creates large contact surface between mast head and bottom of the mast box exactly in place where it matters most.

Standard windfoil mast

eXploder UHM mast

Corrosion resistant alu fuselage

Our aluminium fuselage is protected from corrosion by several coatings. Extra layer of protection is provided by placing sacrificial zinc anode inside the fuselage mast box. Mast fuselage insert is covered by a layer of glass fibre to avoid direct contact between carbon and alloy

Precise rear wing angle adjustment

Simple, precise and fast rear wing angle is a must in a racing windfoil. Using predefined angle shims doesn’t allow to change rear wing angle in a fast and precise manner. Our system allows changing the rear wing angle to within 0,1 degree (or better if you can measure it!) in just a couple of seconds, simply by squeezing/releasing split back end of the fuselage filled with hard springy rubber layer with either the back top screw of rear wing and securing this position with a small bottom screw (patent pending). One full turn of the screw changes the back wing angle by around 1 degree.
Full range of adjustment: 2 degrees. No more too much / too little power situations!

PWA World Cup proven

 In the very first year of it’s existence the 2020 SL foil has won the only PWA World Tour event of the pandemic-shortened season in Croatia. Ridden by Maciek Rutkowski the foil showed tremendous potential which we’re confident to unleash in the 2021 model. It also placed 2nd in the illustrious One Hour Classic race at Lake Garda, featuring a stacked field, including multiple World Champions. Being Maciek’s pet project we cannot wait to see what results the much improved 2021 version will bring!

Component selection and trim table.

Conditions / bodyweight

Mast rake*

Front wing

Fuselage

Rear wing / angle**

< 10 kt. / 80 kg+

1.00 – 2.00

SL Large SL Lightwind SL 230 cm2 @1.20
< 10 kt. / 70-80 kg

1.00 – 2.00

SL Large SL Lightwind SL 230 cm2 @0.90
< 10 kt. / < 70 kg

1.00 – 2.00

SL Large SL Lightwind SL 230 cm2 @0.60
10-18 kt / 80 kg+

1.50 – 2.50

SL Large / Medium SL Regular / HiWind SL 230 cm2 @1.00
10-18 kt / 70-80 kg

1.50 – 2.50

SL Medium SL Regular  / HiWind SL 230 cm2 @0.70
10-18 kt / < 70 kg

1.50 – 2.50

SL Medium / Small SL Regular / HiWind SL 230 cm2 @0.70
19 kt+ / 80 kg+***

2.00 – 2.50

SL Small SL Regular / HiWind SL 230 cm2 @0.70
19 kt+ / 70-80 kg***

2.00 – 3.00

SL Small SL Regular / HiWind SL 230 cm2 @0.50
19 kt+ / < 70 kg***

2.00 – 3.00

SL Small SL Regular / HiWind SL 230 cm2 @0.30

*** – While it’s still perfectly possible to do slalom on foils in high wind, please bear in mind that (for time
being at least) you may be quicker / more in control on a conventional fin slalom setup in those
conditions.

*mast rake – an angle of the fuselage in relation to the bottom of the board between footstraps as measured with an inclinometer with a board lying upside down (it assumes that mast- fuselage angle is constant at 90 degrees). This is always an obtuse angle.

**rear wing angle – an angle between rear wing chord and the fuselage’s longitudinal axis (rear wing angle of attack).

eXploder foil maintenance and care

  • all the parts of the foil should be disassembled and rinsed in fresh water after each use, unless thread of all screws are covered with special seawater resistant anti-seize lubricant, in which case foil should be disassembled at least once a week.
  • before going out ALWAYS check all the screws for tight fit. Vibration while sailing can (and will) loosen foil screws. Do not overtighten the screws! Use a torque wrench to tighten all screws to 7Nm.
  • always use the sufficient length of screws mounting the foil mast to the board (not provided with the foil). Do not use Philips (cross)  type heads in those screws, as they do not allow enough tension.
    Threads of the screws need to completely go through the foil head barrels. Use ample size of washers in those screws, especially the rear one.
  • Front part of the foil mast head always needs to be in contact with the bottom of the tuttle box. Use extra shims (sold separately) to fill this space if necessary (and to properly set required foil mast rake – see trim guide table).
  • Do not swap front wing mounting screws! They are different lengths and are not interchangeable. Always replace lost screws with exactly the same length and head type / size.
  • Always pay attention to water depth while sailing when launching and landing, especially if any shore break is present. Damaging foil by contact with the sea bottom will not be covered by warranty.
  • When not in use (also on the beach) always use provided wings / mast cover to protect foil sharp edges and prevent any accidents.
  • Caution: eXploder windfoil is a high performance equipment, finished to the highest standards to achieve maximum performance on a race course. Please be extremely careful while mounting and using it, as trailing edges of the mast and wings are very sharp!