Mark
Very nice install. The solidNav is a nice unit. I liked the disc brake, was it your idea? Getting the pitch right is a concern of mine, I can get a 13 x 13 prop but I don't want to over prop it. All the prop calulators point to a 13 x 9 or 10, but the're based on a IC motor.
Glenn
--- In electricboats@yahoogroups.com, "acsarfkram" <acsarfkram@...> wrote:
>
> Hi Glenn,
>
> I bought a factory built unit from SolidNav, the Explorer model. It has a Mars motor with a Sevcon controller. I think the gear ratio is 2 to 1 maybe a bit more than 2, you should be able to find that info on their web site.
>
> The prop I'm using is a fixed 3 blade 12x10. I would like to try a 12x11 or 12 some day as I think I would get a higher top speed. Currently I have a top speed in calm conditions of 5.7 knts. My concern is loosing the 4 knts at 20 amps, I would not sacrifice that for a higher top speed. But 4knts at 16 amps....:-)
>
> You can see some photos in the photo section here under "Lotus Flower".
>
> I've been running my system non stop since May of 2008 and am very pleased. Good luck with your research and possible repower.
>
> Mark
> Santa Cruz
>
> --- In electricboats@yahoogroups.com, "Glenn Dennis" <vega1184@> wrote:
> >
> > Mark
> >
> > What motor and controller do you have? Did you get it as a kit or build it your self? What gear ratio and prop are you running? Sorry for all the questions but I am trying to figure this out.
> >
> > Glenn
> >
> >
> > --- In electricboats@yahoogroups.com, "acsarfkram" <acsarfkram@> wrote:
> > >
> > > Hi Glenn,
> > >
> > > With my Ericson 27, (7000lbs before batteries) I have motored for 7 hrs at a draw of 20 amps. At that point I was using a small 2 blade prop that gave me 3 knts at that current draw. I now have a fixed 3 blade that gives me 4 knts at 20 amps.
> > >
> > > During that trip I used only one of the two 48 volt 100 amp hr banks that I have. I do not know how deep I discharged that bank because I didn't have a monitor at that point. It was probably deeper than you should discharge but I did have power at that point.
> > >
> > > I understand the theory dictates lower run times but I would be interested in what people are getting in real life.
> > >
> > > Mark
> > > Santa Cruz
> > >
> > > --- In electricboats@yahoogroups.com, "Eric" <ewdysar@> wrote:
> > > >>
> >
>
No comments:
Post a Comment