Hi Doug,
I was a member of the team who built afChapman II - 2-man recumbent hydrofoil:
http://www.waterbike.eu/Articles/Af_Chapman_2/article_Af_Chapman_2.html
afChapman II had ailerons on main wing for roll control which we used in "flight mode". In displacement mode the boat was relativly stable despite semi circular hull and wing and struts below waterline that are low density and act destabilizing. When going slowly - we used bodyweight and rudder to balance.
We had floats as "training wheels" as you can see on pictures. They offered some capsize safety - but were otherwise kept out of the water. In general you can compare a recumbent single hull to a canoe - using feet for propulsion means that you don't have a paddle to help stabilize - so you would prefer a more stable hull - depending on it's intended use. If you can balance a canoe without using paddles - then you can also balance a recumbent HPB (Human powered Boat) with a hull of same dimension.
I hope this answers you question and wish you the best in future proa adventures!
Kenneth
--- In harryproa@yahoogroups.com.au, Doug Haines <doha720@...> wrote:
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> Biker community, I was wondering if it is as easy on water as it is on land to stay upright riding a recumbent TWO wheeler? I actually like the two wheeled recumbents that you see around more. I rode a three wheeler just one time to test it out and thought the whole extra load of stuff up the front with two wheels joined by a steering system all unecesarily involved and heavy. Mostly the turning around corners wasn't natural anymore. Doug
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> --- On Tue, 24/5/11, LucD <lucjdekeyser@...> wrote:
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> From: LucD <lucjdekeyser@...>
> Subject: [harryproa] single outrigger
> To: harryproa@yahoogroups.com.au
> Date: Tuesday, 24 May, 2011, 6:22
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> Rick, I suppose that while "biking" a symmetric double outrigger setup is natural. Would you lose more using just a single one sided outrigger than you gain in weight saving? Is some proa thinking useful here? You could bias the balance while cruising to one side with an "escape" flick of the rudder in the off chance of heeling over to the other side?
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> The advantage of thought experiments is that one does not get wet ;-)
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> Thank you,
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> Luc
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