Forward motion, headfirst & horizontal to gravity!
Has anyone out there built their own riverboard/whitewater device? Would love to discuss foam/hull design/glassing/dust/etc.
"Curious if anyone has ever built something that can be kicked and hand paddled at the same time."
Adam which types of riverboards / hydrospeeds have you used? Pretty much all of them can be. Brian J even says he spends most his time hand-paddling, and he uses a bodyboard.
But on the Kern, Carlson, Ripboard, and any hydrospeed (imho, especially on the hydrospeed / sledge type boards because you're in them) you can hand paddle and kick at the same time. That's the real beauty of it.
Hugely huge, to be exact. I spend, at a guess, 70-80% of my time on a board hand paddling. The only time I'm not hand paddling is when I have to hang onto the board instead.
I have a hybrid project in the planning which I hope to finish for spring. It is a long wide 2 part wave surfing board with BMX handle bars on the front for standing. I haven't settled on how it will flex between the front and back parts. For the stiff parts I will rough carve blueboard then cover that with modeling clay, model, then glass that using a combo of fiberglass, carbon/kevelar and epoxy. fiberglass for impact, and carbon/kevelar for weight and stiffness. Each of the big parts can be made 1/2 shell at a time. Smaller parts can be made whole over sanded blueboard, then the blueboard is melted out with acetone. Parts are glued together.
It is my understanding from surfboard forums that blueboard does not work well for glassing as it expands and shrinks causing gaps which fill with water. . So i want to fill my resulting shells with 2 part foam.
the basic idea of this craft is that:
It is impossible to stand on most river waves due to the changing flow, or shortness/steepness of the wave. Any time the wave changes your board goes one way and your body the other and unless you are on a really big wave you do not have enough time to recover. With handlebars you can turn them the wrong way to cause a fall towards the direction you want to turn. Like how little people drive motorcycles. If your knees are bent then you can carve.
On the hull design, I surf, I turn, therefore It will have to have rails. possibly a wider front section and a narrower back with short fins.
I would quickly drown without fins so the deck will have to accommodate. The handle bars will be out of the way for riding facelevel.
I will be taking pictures along the way.
Here is a standup pict