Bill's suggestions brings up a good point, not about planing hulls or jet boats, but what does Ernie want? Ernie, are you wanting to investigate the feasibility of electric powered planing jet boats? You'd be in good company. Look at the high-speed performance electric cars. Sure the range is less, but the goal isn't always range or meandering around a pond at walking speeds. What the heck, go for it! Strip the boat of weight and see what happens. Dan
--- In
electricboats@ yahoogroups. com, William Grace <jwsys@...> wrote:
>
> Hi Ernie
>
> I think you would be very disappointed in the performance of a 16 foot
> jet boat converted to electric drive. I have owned a number of jet
> boats; I built my first one in 1963 using Hamilton machinery and a
> converted car engine. These are planing boats which generally do not
> perform well at low speeds. Battery weight will limit you to
> displacement speeds. The hull is the wrong shape for displacement
> speed and the jet is a small diameter, high pressure thrust device.
> The jet performs very well once the speeds get up but relatively
> poorly at slow speeds. You will probably find it will wander like
> Brown's cows at the slow speeds you will be limited to, having no
> rudder and being steered by deflection of the jet stream.
>
> I strongly suggest you find a vessel designed to travel slowly with
> heavy displacement. Vessels such as this perform best when driven
> with a large diameter, slow turning propellor.
>
> I am in the process of building a design from
http://www.selway- fisher.com/ Steam.htm > which will be electric powered.
>
> Sincerely
>
> Bill Grace
> Wellington
> New Zealand
>
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