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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