One word of wisdom or food for thought. Befor you get too far down the rabbit hole, make sure that the Golf Cart Rearend/axle is a positive track differntal. Other wise the alt will lock up the free spinning side while the prop turns. We tried this a few years back on a differnt project only to find out we needed a differnt 3rd member.
Cheers
Robbie
--- In electricboats@yahoogroups.com, bill garrison <wagarrison@...> wrote:
>
> Do you know of a website where I can get info to determine which prop and pitch would maximize efficiency and can I, or should I use a pulley set up at both ends to increase rpms? Will I be able to produce enough DC from the alternator to charge the bank?
>
> William A. Garrison
>
> --- On Wed, 2/9/11, GNHBus@... <GNHBus@...> wrote:
>
> From: GNHBus@... <GNHBus@...>
> Subject: Re: [Electric Boats] Cruising with EP
> To: electricboats@yahoogroups.com
> Date: Wednesday, February 9, 2011, 5:01 AM
>
>
>
>
>
>
>
> Â
>
>
>
>
>
>
>
>
>
>
>
>
> the electric motor rpms will be reduced through the "as is" gearing in the
> golf cart differential by a factor of 12, at the prop and opposing
> alternator. So if max rpm at motor is 3600, the axles see 300 rpm.
> Â
>
> In a message dated 2/8/2011 11:35:25 A.M. Eastern Standard Time,
> wagarrison@... writes:
> Â
>
>
>
>
>
> I'm not quite sure what all that means for me and my club
> car set up in regard to either propelling a houseboat or an E-trike. Can
> you explain with crayons for me?lol!
>
> William A.
> Garrison
>
> --- On Tue, 2/8/11, GNHBus@...
> <GNHBus@...> wrote:
>
>
> From:
> GNHBus@... <GNHBus@...>
> Subject: Re: [Electric Boats]
> Cruising with EP
> To: electricboats@yahoogroups.com
> Date:
> Tuesday, February 8, 2011, 5:25 AM
>
>
> Â
>
> The Internet,
> Â Â
> 12.44:1 gear ratio (a standard in
> golf cars): Â Fed Law limits the speed to 15 mph, there are "hot
> rod" shops that mess around with motors & gears for the
> differentials.
> I saw 6:1, Â don't know if you
> could get 2:1 set up.Â
>
>
>
>
> -----Original
> Message-----
> From: bill garrison
> <wagarrison@...>
> To:
> electricboats@yahoogroups.com
> Sent: Mon, Feb 7, 2011 9:08
> pm
> Subject: Re: [Electric Boats] Cruising with EP
>
>
> Â
>
>
>
>
>
>
>
>
> Hi Mike,
> Thanks for the IMO response, I kept
> trying to attach tech terms to it and didn't make any sense at
> all. OOPS! As far as the motor idea, I already have the 3.1 HP
> golf cart motor with the tranny and axle assembly attached and
> thought that if I could use it for the houseboat without using
> gasoline or diesel then I would be tickled to death. I really
> would like to go full EP with a houseboat. I am starting to
> think that this motor would not be strong enough to push a 40' x
> 14' boat for very long, even if it had a recharging system that
> kept it going. I think I would be asking it to be working harder
> than it's design's intention. I think I will use this motor to
> make an E-trike to bring with us whenever we are in port. I
> think I will look into buying a HBÂ with existing
> propulsion systems and later convert or improve. Thanks for all
> of your advice.
>
> William A. Garrison
>
> --- On Mon,
> 2/7/11, Mike <biankablog@...>
> wrote:
>
>
> From: Mike
> <biankablog@...>
> Subject:
> Re: [Electric Boats] Cruising with EP
> To: electricboats@yahoogroups.com
> Date:
> Monday, February 7, 2011, 5:49 PM
>
>
> Â
>
>
>
>
>
>
> Bill:
> Â
> Sorry. IMO is Internet shorthand for "In my
> opinion". I am not sure I understand what you are trying
> to do with these "axles" one for moving the boat and the
> other for charging the batteries. Sounds like what you
> are describing is already available as a diesel
> engine with an alternator. I don't see the purpose
> of trying to reinvent the wheel.Â
> Maybe what you
> want is a diesel generator powering an electric motor
> and also charging the batteries. I would forget the
> "axles" all together. Minimize the moving parts as much
> as possible would be my advice.
> Â
> Capt. Mike
> http://biankablog.blogspot.com
> ---
> On Mon, 2/7/11, bill garrison <wagarrison@...>
> wrote:
>
>
> From:
> bill garrison <wagarrison@...>
> Subject:
> Re: [Electric Boats] Cruising with
> EP
> To: electricboats@yahoogroups.com
> Date:
> Monday, February 7, 2011, 9:11 PM
>
>
> Â
>
>
>
>
>
> Hi Capt. Mike,
> I appreciate
> your feedback, I feel a bit better. True, I am
> not looking for speed at all. If I can get five
> + mph I will be good with that. By the way, what
> is IMO? I've seen it several times now and
> haven't been able to figure it out. Also, I had
> intended to install the motor/transmission with
> the axle running in the same direction as the
> boat, forward to aft. So there would only be one
> prop in the center of the aft and the other axle
> would turn an alternator or generator to produce
> the electricity to charge batteries. I didn't
> intend to run a water turbine off of the other
> axle, sorry for not communicating my idea
> clearly. Any more thoughts about it now? I can
> use all the help I can get, being new to all of
> this. Thanks for your help.
>
> William A.
> Garrison
>
> --- On Mon, 2/7/11, Mike
> <biankablog@...>
> wrote:
>
>
> From:
> Mike <biankablog@...>
> Subject:
> Re: [Electric Boats] Cruising with EP
> To: electricboats@yahoogroups.com
> Date:
> Monday, February 7, 2011, 8:03 AM
>
>
> Â
>
>
>
>
>
>
> William:
> Â
> I'm not an expert on houseboat designs and
> weight. Perhaps others might be more
> knowledgeable. But, from what I've
> seen of them speed is not a critical issue which
> IMO makes them very suitable for an EP
> system. You could start off with your
> current plans and see how it works for you. You
> can modify and upgrade a lot easier with an EP
> too if you find you need more power. Â
> I also think you might be better off investing
> your money in the solar charging options since
> you have all that nice space on the top of the
> cabins. I doubt your ever get a house boat
> moving fast enough to take advantage of any
> regen. Plus your boat would be always be
> wanting to turn to the side where your
> generating prop is creating the drag for your
> generating plan. I think it better to use two
> motors to keep the boat moving evenly and would
> also make turning and maneuvering a real
> pleasure. Anyway that's my two cents.
> Â
> Capt. Mike
> http://biankablog.blogspot.com
>
>
> --- On Mon, 2/7/11, bill
> garrison <wagarrison@...>
> wrote:
>
>
> From:
> bill garrison <wagarrison@...>
> Subject:
> Re: [Electric Boats] Cruising with
> EP
> To: electricboats@yahoogroups.com
> Date:
> Monday, February 7, 2011, 3:47 AM
>
>
> Â
>
>
>
>
>
> Hi Capt.Mike,
> Please excuses
> my interruption of your conversation with Nanci,
> but I was wondering how does your 8 ton boat
> compare with the weight of the average 40' x 14'
> houseboat? I have a 3.1 HP, 48 volt electric
> motor with a transmission that came from a Club
> Car golf cart. I would like to attach one axle
> to a propeller via a pulley configuration. I
> think running a generator off of the other axle
> could turn a generator, which is turning anyway.
> The generator could then be recharging the
> battery bank as we are cruising. I am doing some
> investigating of my own regarding propeller
> size, rpm/HP requirements for moving a 40'
> houseboat, etc. What do you
> think?
>
> William A. Garrison
>
> --- On
> Sun, 2/6/11, Mike <biankablog@...>
> wrote:
>
>
> From:
> Mike <biankablog@...>
> Subject:
> Re: [Electric Boats] Cruising with EP
> To: electricboats@yahoogroups.com
> Date:
> Sunday, February 6, 2011, 4:52 PM
>
>
> Â
>
>
>
>
>
>
> Nanci:
> Â
> I can move my 8 ton boat about three knots
> in calm conditions without drawing any power
> from the battery bank using the Honda 2000 if I
> need too. Actually I still have power to spare
> from the generator so I usually charge up my 12
> volt house bank at the same time. In reality I'd
> only do that when there is no wind which is not
> very often. The wind usually picks up soon
> enough and I gradually start cutting back on the
> EP as the wind picks up. Pretty soon I am
> sailing again and shut the generator down.Â
> I could also have put in a bigger diesel
> generator and powered the EP system from it too
> but personally I'm done with diesel.
>
> Capt. Mike
> http://biankablog.blogspot.com
>
> --- On Sun, 2/6/11, Nanci <nancishouse@...>
> wrote:
>
>
> From:
> Nanci <nancishouse@...>
> Subject:
> Re: [Electric Boats] Cruising with EP
> To: electricboats@yahoogroups.com
> Date:
> Sunday, February 6, 2011, 8:41 PM
>
>
> Â
>
>
>
> Thanks for
> the reply, Mike. So a Honda 2000 would keep the
> batteries up enough to run the EP that
> long? Well, that makes a lot of difference. Not
> being an engineer, all this battery lingo is a
> little Latin to me.
>
> Nanci
>
>
>
>
> -----Original
> Message-----
> From: Mike <biankablog@...>
> To:
> electricboats@yahoogroups.com
> Sent:
> Sat, Feb 5, 2011 6:03 pm
> Subject: Re:
> [Electric Boats] Cruising with EP
>
>
> Â
>
>
>
>
>
>
>
>
>
>
> Nanci:
> Â
> BTW I changed the topic for this reply. I
> have a friend who is on his second EP system.
> The first one was a homebuilt setup with
> chain gearing a little noisy. A few years
> back he sailed from St. Martin to St. Thomas on
> the way back he was demasted. He used his EP
> system and Honda Generator for twelve hours of
> motoring to get to St. Criox for repairs. EP
> systems work well on sailboats. But, as I
> mentioned to Pete you have to be ready to
> embrace them. But, IMO they just make a whole
> lot of sense for a sailboat thats why I
> decided to go with it.
> Â
> Capt. Mike
> http://biankablog.blogspot.com
>
> --- On Sat, 2/5/11, Nanci <nancishouse@...>
> wrote:
>
>
> From:
> Nanci <nancishouse@...>
> Subject:
> Re: [Electric Boats] Re: Electric boating
> association in the US?
> To: electricboats@yahoogroups.com
> Date:
> Saturday, February 5, 2011, 3:37 PM
>
>
> Â
>
>
> I'm in
> a part of the country where there are a lot of
> cruisers. I do mostly "destination" sailing ie
> Bahamas or north to the Cumberland Island,
> Georgia for a short sail. As much as I would
> like to convert, I can't figure how this would
> work for me with the present battery
> limitations.
>
>
> Nanci
>
>
> -----Original
> Message-----
> From: acsarfkram <acsarfkram@...>
> To:
> electricboats@yahoogroups.com
> Sent:
> Fri, Feb 4, 2011 8:58 pm
> Subject: [Electric
> Boats] Re: Electric boating association in the
> US?
>
>
> Â
>
>
>
>
> Sorry somehow I hit the send key before I
> finished :-).
>
> What I was trying to get
> at is the fact that electric sailboat auxiliary
> businesses were just getting off the ground with
> engineered, affordable units when the economy
> tanked. I think if you look into any Marine
> Business you will find pretty flat
> sales.
>
> And to finish my thought on my
> setup;
> Yes, I have been operating my electric
> auxiliary sailboat nonstop since April or May of
> 2008 and have never had a range or operational
> issue. I don't cruise much, mostly daysail
> multiple days per week with overnights within 35
> miles, but that is more than I see most of the
> sailboats doing around
> here.
>
> Mark
> Santa Cruz
>
>
> ---
> In electricboats@yahoogroups.com,
> "acsarfkram" <acsarfkram@>
> wrote:
> >
> > Hi Eric,
> >
> >
> I'll agree with the idea that powerboats are a
> niche group for E-propulsion. Although even for
> a strictly motorized boat (no sails) electric or
> human-power is increasingly the only way people
> are going to be able to access certain lakes
> across the USA.
> >
> > There are three
> other electric sailboats boats that I know of in
> the Santa Cruz Harbor. I think one of the
> reasons that there are not more electric
> conversions on sailboats is that the economy has
> been so bad pretty much since the latest
> Unfortunately the electric auxiliary .
> >
>
> > Yes, I have been operating my electric
> auxiliary sailboat nonstop since April or May of
> 2008
> >
> > --- In electricboats@yahoogroups.com,
> "Eric" <ewdysar@> wrote:
> >
> >
> > > No, I was referring to the
> fact that there are many more power boats than
> sailboats in the US. According to the USCG 2009
> statistics, registered power boats outnumber
> auxiliary sailboats by about 98 to 1. Looking at
> just the sailboat population, we know that the
> 26' to 40' range is the sweet spot for electric
> conversions. Now we're down to less than 51,000
> boats in the US out of over 12 million
> mechanically driven boats (boats with motors).
>
> > >
> > > Many of the people I
> know that own boats of that size would not
> accept the limitations that we have all accepted
> by trading to electric. I own two boats in this
> range and won't convert one of them due to the
> performance hit while sailing and motoring, and
> I'm a big proponent of the technology.
> >
> >
> > > Just for sampling, I know
> that you've been operating your boat very
> successfully for a few years. How many other
> people in your marina have tackled a similar
> conversion?
> > >
> > > I still
> beleive that electric drive is a very good
> answer for some sailboat users, but it no more
> of a universal answer than ICE is.
> > >
>
> > > --- In electricboats@yahoogroups.com,
> "acsarfkram" <acsarfkram@> wrote:
> >
> > >
> > > > >Show them how
> the compromises can be a good choice for some
> users. >With their
> > > >
> >feedback about your boat, you'll find that
> electric is not a good >choice for
> >
> > > >most boaters, both pleasure and
> commercial. This is a niche industry >and
> I'm
> > > > >glad to be a
> contributing part of it.
> > > >
>
> > > > >Eric
> > > >
>
> > > > I've seen some negative
> posting here lately, but this one I can't let
> stand. Without a doubt MOST sailboaters that I
> see out on the water would be better off with an
> electric drive. Cheaper to operate, more
> reliable, more pleasant to be around...
> >
> > >
> > > > Eric, are you
> talking about commercial fishing boats?
> >
> > >
> > > > Mark
> > >
> > Santa Cruz
> > > >
> >
> >
> >
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> __________________________________________________________
> Don't pick lemons.
> See all the new 2007 cars at Yahoo! Autos.
> http://autos.yahoo.com/new_cars.html
>
No comments:
Post a Comment