Very nice work guys!
Nice boat for your environment as well, boat to work or a night cruise down the canals.
I've been playing with an idea for a "toy" like yours as well.
This has given me some incentive. But I was thinking a bit smaller, like a 12 foot boat or even a Sea Flea. But with a high powered inboard electric drive. Just to flash across our small cottage lake and back. Just enough to freak out the neighbours.
Again, nice job guys!
--- In electricboats@yahoogroups.com, "ams_ak@..." <ams_ak@...> wrote:
>
> Hello Neil and all,
>
> some more data for the inquiring minds:
>
> The prop we are using is a 15 x 17 mounted on a Volvo Penta 270 sterndrive with 1:2.15 gear ratio. I do not know the real total weight of the boat, but we took out about 400kg and put 460kg back in. All mounted in a 1974 Glastron V174 Bayflite.
>
> Power consumption while getting up on plane is the peak draw, this is where our current limit settings kick in the most.
> I limmit pack to 540A (6c) and motor 750A (the soliton can and will do 1000A)
> Limmit pack low under load (sagvalue) to 2.4 * 90 = 216V, limit motor to 240V
> Limit total output to 130kW, but have seen some higher numbers in the logfile
>
> with the current settings (both meanings) draw figures as they appear on the dash are:
> 550A peak draw getting on plane. 350Aish for top speed (54kph) 130-140A to stay on plane and cruise. coming from displacement mode you can also build up to 120A-130A without getting on plane, so same current draw much lower speed.
>
> Hope you enjoy this data. Ill be interested as to any findings or further questions you might have.
>
> I do not check the Ymail, you can reach me at anne at newelectric.nl
> our youtube channel now has a cool new vid of the powerboat pulling away as seen from shore:
> http://youtu.be/Rvg_IA43b9k
>
>
> regards,
>
> AK
>
> --- In electricboats@yahoogroups.com, "fneilss" <fneilss@> wrote:
> >
> > Yowsa! Kinda the opposite end of the spectrum from my long and lean at minimum watts approach to electric boating. I think I could tool along all summer with one charge of a 25kWh battery bank ;) (of course even with LiFePO4's it would sink my boat).
> >
> > With that big bank you can't go very long at 70+ kW draw/top speed. Have you measured the draw and knots at cruise? Never having planed a boat on electric power, I've always wondered what the current draw would be to keep a small electric speedboat on plane.
> >
> > What size is the prop? What does the boat displace?
> >
> > How far do you have to go to commute to work?
> >
> > Inquiring minds want to know!
> >
> > Thanks,
> >
> > Neil
> >
> >
> >
> > --- In electricboats@yahoogroups.com, "ams_ak@" <ams_ak@> wrote:
> > >
> > > Neil,
> > >
> > > Yes they are.
> > > motor: Kostov 11" 250V 260A/duty cycle, we have 2 extra blowers for cooling
> > > Controller: Evnetics Soliton1 = 300kW max output
> > > Batts: 90 * 90AH Winston LiFePo4, we limit to 540A output (6C)
> > >
> > > We got all of the above from http://kostov-motors.com/tractionmotors/kostovevmotors(ac-dc)/seriesdcmotorsforelectricvehicles/k11250v/
> > >
> > > Great company, great service.
> > >
> > > AK
> > >
> > > --- In electricboats@yahoogroups.com, "fneilss" <fneilss@> wrote:
> > > >
> > > >
> > > >
> > > > --- In electricboats@yahoogroups.com, "ams_ak@" <ams_ak@> wrote:
> > > > >
> > > > >
> > > > > Hello and thanks for the good cheer!
> > > > >
> > > > > a new vid up on Youtube that goes a small ways toward answering the questions.
> > > > > http://youtu.be/jj3gg7A6BZ0
> > > > >
> > > >
> > > > The text on Youtube says 240V - your audio says 300+ amps at one point - 70+ kilowatts??? Are those numbers right?
> > > >
> > > > Neil
> > > >
> > >
> >
>
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