Ron, one fact that I realized in all the Brain Storm sessions is that some of the crazy ideas make the not so crazy ideas grow into something that works... That time at Apple made me appreciate this concept.... keep thinking and then get to work... chuckle... Dave K
From: Ron <rlgravel@swbell.net>
To: electricboats@yahoogroups.com
Sent: Thu, December 2, 2010 6:27:07 PM
Subject: [Electric Boats] Re: Converting an Albin 27
Dave, your project looks good and you will be on the water having fun, while I'm at home thinking up crazy ideas. Just one more and I'll be done for a while, a skinny paddel wheel between two flat plates acting as a rudder, flat pancake motor power to the wheel. The point is to move the torque point as far as possible from center of rotation.
I better quit. I am working on some air motor things, so I'm having a little fun.
Hope everyone has some good holidays.
Ron
--- In electricboats@yahoogroups.com, Dave Kellogg <inganear1@...> wrote:
>
> Ron, one of the nice points about the boat I choose was the full keel, it
> protects the prop and nozzle under all but the most "what if" conditions. The
> rear of the keel where the nozzle connects was flared to allow the natural flow
> to the Rice nozzle. The rudder is a turbulence maker but have to have it....
> Chuckle I looked at the possibility of a 2 shafted unit but the time to
> build it and experiment with 2 distinctly different systems was more than I
> wanted to put into the project.. Again this is not for the racers, it's for
> the person that wants to milk every bit of power out of the system to be put
> back into the battery bank for either propulsion or house, don't matter to me..
> Ideally I want to do it all with one prop and will continue to work and
> experiment to that end, if it happens, great, if it doesn't, I'll try a
> different approach... Ideas and critiques anticipated. Dave K
>
>
>
> ________________________________
> From: Ron <rlgravel@...>
> To: electricboats@yahoogroups.com
> Sent: Thu, December 2, 2010 3:24:22 PM
> Subject: [Electric Boats] Re: Converting an Albin 27
>
>
>
> Dave, I looked at the pictures and see what you mean about a tight fit. I got
> disconnected and lost a too long post (likely a good thing)it was in reply to
> Eric and his usual good information. I think his post shows that the value of
> power to the speed prop and the regen from that same prop are too different to
> be real practical, that is why I threw out something so different.
> When we built push boats we used flanking rudders, but never did anything with
> kort nozzels. Looking at your rudder, I wonder how large of a nozzel would
> supply close to the same control, a hydraulic or electric powered small prop
> inside and the outer adjustable blades for regen. Eliminating the shaft through
> the hull would allow service without dry docking. The piviot would be where your
> rudder swings now, for the minds eye it would be much like an oscilating fan
> (sp). The best solution for electric will not be in a single prop.
> I believe the number of batteries not needed or being replaced will offset the
> cost of some engineered version of this idea, in a short time.
>
> If we have absolutly free charging, the problem will be the same,"not enough
> storage capacity for the power/time factor".
>
> The regen nozzle might be too vulnerable to damage, but maybe not. The fear of
> "what might happen" has killed some good ideas.
>
> Ron
>
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