[hpv-boats] hydrovisions

[lampi at mdlcorp.com]

The photo gallery claims they were using the rear-positioned outriggers
back in 2005, which pre-dates, or was concurrent with, Rick's design.

24 pounds for the wing seems a bit heavy, but the weights for the floats
(5.5 lbs each) is about right for a commercial standard duty boat built
from standard materials.

With a standard kayak-like cockpit it would require a bit of surgery to
make room for moving legs, though either a Spin-Fin-like drive or a
flexible shaft drive could be incorporated fairly easily.

I have not tried a folding prop with the Cadence. It would probably work
fairly well so far as weeds are concerned, but it would cause problems
with the rudder if one rested the boat on its bottom while beached. With a
fixed propeller the boat rests on the blades, and the rudder is not
carrying the load.

Michael Lampi

> Yes, with this foil running shallow where most weeds are, not work to
> well.
>
> Here's another link showing how some commercial products are approaching
> Rick's design:
> http://www.triaksports.com/paddling/
>
> Fairly lightweight and good speed according to the web site, anyway. How
> to
> convert to prop?....
>
> Have you tried a folding prop with your boat, Mike, and how well does it
> work in weeds?
>
> Thanks,
>
> Vic
>
> Vic
> ----- Original Message -----
> From: <lampi at mdlcorp.com>
> To: "Human Powered Vehicles -- Boats" <hpv-boats at bikelist.org>
> Sent: Saturday, October 16, 2010 1:48 PM
> Subject: Re: [hpv-boats] hydrovisions
>
>
>> Hi Vic,
>>
>> So long as you have adequate depth and don't run into any weeds, this
>> isn't too bad. Around here, however, I'd find the outrigger foil
>> gathering
>> all sorts of foliage (foilage? :-) ) and have to find some way to clear
>> it.
>>
>> Michael Lampi
>>
>>> Thought this concept might be of interest:
>>>
>>> http://www.hydrovisions.com/
>>>
>>> Maybe the concept could be worked to make the hydrofoil run shallow and
>>> self
>>> adjusting at speed. That might get the proa or even a cat to work like
>>> a
>>> single, more efficient hull even in chop. Think it would be better than
>>> trimaran outriggers slamming into waves?
>>>
>>> Also on the folding prop, seems easier to make at least since there is
>>> no
>>> welding involved?
>>>
>>> Vic
>>
>>
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