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by bohme
Thu Oct 24, 2019 10:55 am
Forum: Hydrofoil
Topic: The longest non-stop leg
Replies: 4
Views: 390

Re: The longest non-stop leg

Impressive. Maybe a bit crazy :-) What stops me from doing this is safety. I have been en trouble once because of fatigue and and a long swim. I often foil solo, and bring my mobile in an aqua-pack and some glow sticks. You can now call 112 with gps coordinates (country dependent). What is the next ...
by bohme
Fri Oct 11, 2019 10:42 am
Forum: Foil Kites
Topic: Flysurfer Peak 4
Replies: 443
Views: 36040

Re: Flysurfer Peak 4

I have tried line length 14m, 17m, 28m on a Peak4 4m2. 17m is the sweet spot for me, but I still prefer 28m lines to my old 9m LEI. With 28m lines I waterstart using a big powerstroke. With 17m lines I sometimes have to use "flat figure 8" to keep the kite in the powerzone for longer. I do not mind ...
by bohme
Mon Sep 23, 2019 12:41 pm
Forum: Hydrofoil
Topic: Getting past ocean breakers
Replies: 18
Views: 994

Re: Getting past ocean breakers

It is not easy. I made a video of a shore break attempt from last year. It is very long, as I do not expect other to be interested. I can only add to what already has been written, that you need to paddle as much as you can with your feet. I did not do that in the video. For me the most important th...
by bohme
Thu Sep 19, 2019 4:50 pm
Forum: Foil Kites
Topic: Flysurfer Peak 4
Replies: 443
Views: 36040

Re: Flysurfer Peak 4

A short video of my last kitefoil wave session, using a Peak4 4m2 on 17m lines:



This is an awsome kite for my kitefoil setup and home spot. Thank you all for sharing.
by bohme
Sun Sep 15, 2019 3:14 pm
Forum: Gear Builders
Topic: Pocket foilboard divynicell 80 core Ghetto build tips?
Replies: 37
Views: 2851

Re: Pocket foilboard divynicell 80 core Ghetto build tips?

Bohme, that*s an awesome board. What material is the stringer? And is the board stiff? The core of the stringer is also PVC, just a bit thicker. I used longitudinal UD carbon tape both on the stringer and on deck for stiffness. The thickness of the stringer is matching the KF box against the deck l...
by bohme
Sat Sep 14, 2019 11:36 pm
Forum: Gear Builders
Topic: Pocket foilboard divynicell 80 core Ghetto build tips?
Replies: 37
Views: 2851

Re: Pocket foilboard divynicell 80 core Ghetto build tips?

I made one from a single sheet of 15mm 80g/m3 PVC. PVC is a structural core and way better than XPS and PU. No problems with heat or dents. I laminated one side at the time with 300g/m2 biax carbon (vacuum). I just used bricks and gravity to get the rocker I wanted. The strength is in the stringer, ...
by bohme
Thu May 23, 2019 8:11 pm
Forum: Gear Builders
Topic: vacuum ... or something else
Replies: 13
Views: 1353

Re: vacuum ... or something else

You can often make ok quality without vacuum.
Wet-out every layer on a separate piece of plastic, and use a bristle roller to consolidate on the part.
by bohme
Tue Mar 19, 2019 10:54 am
Forum: Foil Kites
Topic: Disconnecting Z or more at the tip
Replies: 22
Views: 1810

Re: Disconnecting Z or more at the tip

The best lift distribution is not necessarily 'elliptical'
Try google "bell shaped lift distribution". Unloading the tips can reduce induced resistance.
by bohme
Thu Feb 07, 2019 4:46 pm
Forum: Hydrofoil
Topic: Surf/wave wing thickness and NACA profiles
Replies: 20
Views: 2444

Re: Surf/wave wing thickness and NACA profiles

My wave foil "Uni foil 175": 12% thickness (26.6mm on 220mm chord), It is close to a NACA 2412 (pretty plat pressure side). I believe a NACA 6412 has way too much camber. A bigger area it better at giving you the slow speed lift you need. A thinner foil has less drag and perhaps a more direct feel t...
by bohme
Sun Jan 06, 2019 6:57 pm
Forum: Hydrofoil
Topic: Deck grip
Replies: 18
Views: 2068

Re: Deck grip

I agree.
You do not need or want want soft 'cushion' pads for foilboards.
It gives you a better feel of the foil.
It also works with straps :-)
Jacob

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