[Public-list] electric repower

[Don Campbell]

I find that if you use the main on motor trips it extends the range by a
considerable distance. I have a 13 - 8  2-blade prop on the A 4 and find it to be
much more efficient on fuel than the 12-7 three blade that was originally on the
shaft. I have motored from Port Colborne to Port Dover on Lake Erie  with the
main, against the breeze when it was there, a distance of 50 NM for less than
$10.00 of gas,  which at the time would have been slightly less than  4 gallons of
fuel. The mainsail was up all the way.
Don #528


Gordon Laco wrote:

> Sorry Mike - I think that you are correct.  We can motor to the Western
> Island and back from here if we have to - over 40 miles each way.  Forgot
> about that!
>
> Gord
>
> > Mike,
> >
> > I think your range is more like 100nm
> >
> >
> >
> > Mike Lehman
> > ~~~_/)_/)~~_/)~~~
> >
> >
> >
> >
> > ----Original Message Follows----
> > From: "Meinhold, Michael J" <MICHAEL.J.MEINHOLD at saic.com>
> > Reply-To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
> > To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
> > Subject: RE: [Public-list] electric repower
> > Date: Tue, 7 Jun 2005 08:15:11 -0400
> >
> > Most of the websites offering electric propulsion neglect to discuss a power
> > source or power storage.
> > Getting a reasonable motoring range out of batteries is the kicker with
> > electric propulsion .
> >
> > The energy density of gas is about  6. kilowatt-hours / pound, and it weighs
> > about 6.2 pounds/gal,
> > so my 10 gallon gas tank stores 6*6.2*10 = 372 kilowatt-hours. I think I
> > have a range of about 35 NM (more experienced A30/A4 owners can correct me)
> >
> > The energy density of a Lead-acid battery is about 0.03 kilowatt-hours /
> > pound. So to match the range provided by the gas tank, I'd need 372 / 0.03 =
> > 12,400 lbs of batteries.
> >
> > An electric drive has the potential of being a lot more efficient, but it's
> > not going to solve this problem.
> >
> >
> >
> > -----Original Message-----
> > From: public-list-bounces at alberg30.org
> > [mailto:public-list-bounces at alberg30.org]On Behalf Of J. Brown
> > Sent: Tuesday, June 07, 2005 12:52 AM
> > To: Alberg 30 Public List -- open to all
> > Subject: Re: [Public-list] electric repower
> >
> >
> >
> > I'd go for it if I had the money but it is much more expensive and a lot
> > more expensive if you want the same power (max hull speed).
> >
> > I like the set up these guys offer: http://www.solomontechnologies.com/
> >
> > On the other hand if all you use the inboard for is to get you in and out
> > of a small easy harbor on nice days then it should be considered because
> > you wouldn't need to spend lots of money for that kind of duty.
> >
> > Here are some incomplete thoughts I had on the subject:
> > http://www.jb0713.com/sail/engine/electric.htm
> >
> > Haefen
> >
> > At 03:45 PM 6/6/2005 -0700, you wrote:
> >> as many know, i have been slowly moving towards repowering from gas to
> >> diesel. then i started thinking about going to electric. stumbled on ngc's
> >> website, and now see their name as a sponsor for the alberg 30 site.
> >> looked to see if anyone has done this in the group but found no refernces.
> >> so, has anyone had any experience in this area? diesel smell has always
> >> nauseated me so this method has a lot of appeal
> >> constructive comments are welcome
> >> dan
> >>
> >>
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