Tag: Pumpfoil

Belly, Knee, Feet

When I tried to get other people into pumpfoiling in 2020, I would always show them the steps and hold them the board. They would run and crash, if they were lucky, they did not hurt themselves. The early adopters are mostly hardcore.

These days after teaching a lot of adults and children I am evolving my teaching technique, last but least to avoid injuries on yourself, on other people and your equipment.

These days I start with all my beginners, no matter the age, size, weight or talent on the belly. Try to glide as long as possible. If you reach 15 m on your belly, then you get the glide feeling, then you understand the gilde feeling on the foil, because you glided on the foil and your body was as close to the foil as possible.

Being on the belly you are closer to the center of gravity of the foil, the focal point (Schwerpunkt). What matters is that you experience the feeling of the glide.

You can do this a 100 times or more, till you consistently glide more than 10 meters. Till you manage to glide 10 meters or more 90% of your tries.

After that go onto the knees.

Push off with your jump leg (Sprungbein). Place the other knee first on the board and then get the second knee on the board. Try to pump the board. Zoe shows this very well in the short videos.

PDF

Once you manage to glide on your knees for more then 10 meters consistently, try to stand up. Sophie is showing this nicely as well in the 3rd video. When you crash, always hold on to the board. This is important for your own safety, for the safety of your surroundings. It is also good for your equipment. Learn slow, baby steps, no ambition, no expectations.

Do at least 100 knee starts and then move on to jump directly to your feet. Do this only after you manged to get up a couple of times after doing the knee start, like Sophie and Zoe show.

Happy Pumping!

ONIX 2025 catalogue.

Osprey 1850 dockstart and pump front wing by ONIX

Pre-Order is open now! Grab it with 40% discount!

Full set with Board (use “ZENO10X” for 10% discount)

Flat Surface: 1658cm2
Full Surface: 1954 cm2
Volume: 2566 cm3
Span: 120cm
Chord: 18.5cm
Profile depth: 2.85cm
Aspect Ratio: 8.68

Stall speed 45kgs: 4.6
Average speed 45kgs: 6.0
Max Speed 45kgs: 13

Stall speed 55kgs: 5.2 knots
Average speed 55kgs: 6.6 knots
Max Speed 55kgs: 14

Stall speed 65kgs: 5.6 knots
Average speed 65kgs: 7.2 knots
Max Speed 65kgs: 15 knots

Stall speed 75kgs: 6.0 knots
Average speed 75kgs: 7.6
Max Speed 75kgs: 16 knots

Stall speed 85kgs: 6.4 knots
Average speed 85kgs: 8 knots
Max Speed 85kgs: 17 knots

Stall speed 95kgs: 6.8 knots
Average speed 95kgs: 8.4 knots
Max Speed 95kgs: 18 knots

These values are measured after running 3d computer analyses through the XFLR5 open source platform.
We used a type 2 (fixed lift) LLT Wing analysis with a water density of 1023.0 kg/m3.
Stall Speed: Required speed to lift the needed weight, Angle is set at 5 degrees up at stall.
Average Speed: Required speed to lift the needed weight when cruising, Angle is set at 1 degrees up at mean.
Max Speed: Required speed to lift the needed weight when getting through max speed, Angle is set at -3 degrees up at highest.

2x Unidirectional 300g
1x Biaxial 300g
1x Biaxial Patch 300g
1x Twill carbon 300g
1x glass 80g

Pine wood core. Same amount of carbon on each side.

total weight, 750g.

Lift to drag ratio / Angle of attack. In blue the profile used on the new Osprey 1850, in red the profile used on the other ONIX models.


Here you can see the 2D results. In blue is the new foil profile, and in red is the profile I use on the ONIX foils until now. So you can see that the lift to drag coefficient in function of the angle of attack is nearly double. It’s about 40 % higher. So in theory, it means that it should be really efficient.

ONIX 2025 catalogue.

Lightning Talks 23.8.2024

Pumpfoiling entwickelt sich immer mehr zum neuen Schweizer Nationalsport. Die Schweiz hat über 1500 Seen. Pumpfoilen kann man zu jeder Jahreszeit und bei jedem Wetter machen. 

Bei diesem Anlass sprechen Menschen über ihre Erfahrung beim lernen, üben von Pumpfoilen auf Schweizer 🇨🇭 Seen, maximal 2 Minuten pro Person die präsentiert.

Nach den Lightning Talks gibt es einen gegenseitigen Austausch mit allen interessierten anwesenden Parteien.

https://buero-zueri.ch/events/pump-tsueri

Anmeldung

Ort

Zeit: 11.30-14.30

The videos: https://www.youtube.com/watch?v=ZsTDV68zae0&list=PLG6gqtV1h9-2EIlkAfZ08OwmHBcxnfw9o