Re: [bolger] Electric auxiliary engine
From: "edward haile" <ewhaile@...>
To: <bolger@egroups.com>
wind
chargers and the spinning prop you pay for it in increased drag. If the wind
is strong enough to make hull speed it comes at a pretty small penalty.
The difference in effencies of electric motors is less than 10 precent for
the
regular to the best so you don't get much that way.
The only way to get distance is for the boat to be moving slowly so it
doesn't
make much drag.
There is nothing wrong with that.
There is a magnisum battery that produces electricity from a reaction with
salt
water. It is not a very good battery it has high internal resistance so the
voltage
falls very rapidly as current draw increases but I might be a way to store
fuel
for emergencies.The battery is consumed in the process. But it might be
worth looking into if you use an electric aux insted of a hyred system.
I think electric only aux motors would only be approiate in limited
conditions.
I think it would work great in Corpus Christy Bay and lousy if you were
crusing the inter coastal canal and totaly sensless for off shore crusing.
Gordon W5RED
G. C. Cougergcouger@...Stillwater, OK
www.couger.com/gcouger
"You miss 100 percent of the shots you never take." - Wayne Gretzky
To: <bolger@egroups.com>
>that
> I'm not even at the skeptical stage. All I have is a brochure & claims
> this is something unique and unmatched in boat propulsion. "The Wheel isor
> more powerful, energy efficient, reliable and carefree than any other gas
> diesel engine, or electric motor of comparable horsepower in use today."say
> They are up to something, I don't know what. I mentioned it to see if
> anybody out there knew more, and the subject came up. Regeneration they
> comes from a spinning prop as the boat sails. That sort of thing, alongwith
> windvane and solar panels. My guess is it's a very efficient electricmotor,
> two, infact, with 8 moving parts and no grease or oil. Maintenance freeA
> after 3 years in salt water. It says it relies on ten deepcycle batteries.
> bit more than 50lbs, I'd say. But then IC engines don't include the weightAs stated in the laws of thermodymaics there is no free lunch. If you use
> of fuel tanks, do they? Anyhow, talk to Solomon Technologies in Benedict,
> Maryland 301-274-4479.
>
wind
chargers and the spinning prop you pay for it in increased drag. If the wind
is strong enough to make hull speed it comes at a pretty small penalty.
The difference in effencies of electric motors is less than 10 precent for
the
regular to the best so you don't get much that way.
The only way to get distance is for the boat to be moving slowly so it
doesn't
make much drag.
There is nothing wrong with that.
There is a magnisum battery that produces electricity from a reaction with
salt
water. It is not a very good battery it has high internal resistance so the
voltage
falls very rapidly as current draw increases but I might be a way to store
fuel
for emergencies.The battery is consumed in the process. But it might be
worth looking into if you use an electric aux insted of a hyred system.
I think electric only aux motors would only be approiate in limited
conditions.
I think it would work great in Corpus Christy Bay and lousy if you were
crusing the inter coastal canal and totaly sensless for off shore crusing.
Gordon W5RED
G. C. Cougergcouger@...Stillwater, OK
www.couger.com/gcouger
"You miss 100 percent of the shots you never take." - Wayne Gretzky
Hi Lincoln Ross,
I'm not even at the skeptical stage. All I have is a brochure & claims that
this is something unique and unmatched in boat propulsion. "The Wheel is
more powerful, energy efficient, reliable and carefree than any other gas or
diesel engine, or electric motor of comparable horsepower in use today."
They are up to something, I don't know what. I mentioned it to see if
anybody out there knew more, and the subject came up. Regeneration they say
comes from a spinning prop as the boat sails. That sort of thing, along with
windvane and solar panels. My guess is it's a very efficient electric motor,
two, infact, with 8 moving parts and no grease or oil. Maintenance free
after 3 years in salt water. It says it relies on ten deepcycle batteries. A
bit more than 50lbs, I'd say. But then IC engines don't include the weight
of fuel tanks, do they? Anyhow, talk to Solomon Technologies in Benedict,
Maryland 301-274-4479.
Ed Haile
Get Your Private, Free E-mail from MSN Hotmail athttp://www.hotmail.com
I'm not even at the skeptical stage. All I have is a brochure & claims that
this is something unique and unmatched in boat propulsion. "The Wheel is
more powerful, energy efficient, reliable and carefree than any other gas or
diesel engine, or electric motor of comparable horsepower in use today."
They are up to something, I don't know what. I mentioned it to see if
anybody out there knew more, and the subject came up. Regeneration they say
comes from a spinning prop as the boat sails. That sort of thing, along with
windvane and solar panels. My guess is it's a very efficient electric motor,
two, infact, with 8 moving parts and no grease or oil. Maintenance free
after 3 years in salt water. It says it relies on ten deepcycle batteries. A
bit more than 50lbs, I'd say. But then IC engines don't include the weight
of fuel tanks, do they? Anyhow, talk to Solomon Technologies in Benedict,
Maryland 301-274-4479.
Ed Haile
>From: "Lincoln Ross" <lincolnr@...>________________________________________________________________________
>Reply-To:bolger@egroups.com
>To:bolger@egroups.com
>Subject: Re: [bolger] Electric auxiliary engine
>Date: Wed, 03 May 2000 16:40:26 -0000
>
>I'd be skeptical. As I recall, 1200 watts is less than 2 hp, and
>that's presumably before mechanical and electrical losses. Now if
>they
>said 12,000 watts, maybe. And how do you get "regenerative feedback"?
>Wheels with brakes?
>
>--- Inbolger@egroups.com, "edward haile" <ewhaile@h...> wrote:
> > Hi Gordon,
> >
> > Have you heard of "The Electric Wheel"? I picked up a brochure at
>the
> > Annapolis boat show in '97 or '98, and I am still not quite sure
>what it is.
> > I quote from the brochure:
> >
> > "The sailboat did 6k for 17-1/2 hrs (1200 watts burn rate) from a
>single
> > charge, with three solar panels and regenerative feedback." "The
>sailboat
> > did 2.7k with only one motor, demonstrating the redundant emergency
> > operation." The boat was an old 33' mahogany yacht. The principle
>seems to
> > be very high power at very low rpm. Weighs 50lbs.
> >
> > Ed Haile
> >
> >
> > >From: Gordon Couger <gcouger@r...>
> > >Reply-To:bolger@egroups.com
> > >To: bolger@e...
> > >Subject: [bolger] Electric auxiliary engine
> > >Date: Mon, 1 May 2000 20:08:52 -0500
> > >
> > >I was looking at this issue of MIB and noticing what an intrusion
>the
> > >engine compartment made in Bolger's small cruiser.
> > >
> > >Wheels started turning in my head, did a little math and concluded
> > >that a hybrid electric set up would be possible. Using 2 90 amp
> > >12 V alternators to produce about 120 amps would convert to
> > >about 2 hp. It might take a 8 or 10 hp engine to run them but
> > >a 2 hp electric motor will do about the same work as a 4 or 5 hp
> > >IC engine You would not necessarily need a IC engine capable
> > >of developing full power of the electric motor. The battery bank
> > >could greatly increases the output of the electric motor for fairly
> > >lone periods of time.
> > >
> > >I see several advantages to the system. First the motor starts
> > >instantly every time when running off batteries. The shaft can be
> > >parallel to the thrust line because the motor can be mounted
> > >in the keel. You have a great deal more control of the motor
> > >a low RPM. The IC motor does not have sit smack in the middle
> > >of the boat just where you want to be it could be mounted to one
> > >side under the seat and the batteries mounted on the opposite side
> > >to balance the weight. Most of the time you could run on batteries
> > >alone with no need of the IC engine. Some folks would probably
> > >not even install and IC engine If all they needed and auxiliary for
> > >was to clear the harbor and maneuver in tight spots.
> > >
> > >I see a few draw backs as well. Over all higher cost. More parts
> > >make more places for problems and more cost of maintenance. Poorer
> > >over all efficiency. If you had to make a long run on the
>auxiliary
>you
> > >would probably need a bigger IC engine to get the same performance
> > >as a conventional set up.
> > >
> > >Just some thoughts.
> > >
> > >Gordon
> > >
> > >Gordon Couger gcouger@c...
> > >
> > >Stillwater, OK www.couger.com/gcouger
> > >405 624-2855 GMT -6:00
> > >
> > >
> >
> >
>______________________________________________________________________
>__
> > Get Your Private, Free E-mail from MSN Hotmail at
>http://www.hotmail.com
>
Get Your Private, Free E-mail from MSN Hotmail athttp://www.hotmail.com
I'd be skeptical. As I recall, 1200 watts is less than 2 hp, and
that's presumably before mechanical and electrical losses. Now if
they
said 12,000 watts, maybe. And how do you get "regenerative feedback"?
Wheels with brakes?
that's presumably before mechanical and electrical losses. Now if
they
said 12,000 watts, maybe. And how do you get "regenerative feedback"?
Wheels with brakes?
--- Inbolger@egroups.com, "edward haile" <ewhaile@h...> wrote:
> Hi Gordon,
>
> Have you heard of "The Electric Wheel"? I picked up a brochure at
the
> Annapolis boat show in '97 or '98, and I am still not quite sure
what it is.
> I quote from the brochure:
>
> "The sailboat did 6k for 17-1/2 hrs (1200 watts burn rate) from a
single
> charge, with three solar panels and regenerative feedback." "The
sailboat
> did 2.7k with only one motor, demonstrating the redundant emergency
> operation." The boat was an old 33' mahogany yacht. The principle
seems to
> be very high power at very low rpm. Weighs 50lbs.
>
> Ed Haile
>
>
> >From: Gordon Couger <gcouger@r...>
> >Reply-To:bolger@egroups.com
> >To: bolger@e...
> >Subject: [bolger] Electric auxiliary engine
> >Date: Mon, 1 May 2000 20:08:52 -0500
> >
> >I was looking at this issue of MIB and noticing what an intrusion
the
> >engine compartment made in Bolger's small cruiser.
> >
> >Wheels started turning in my head, did a little math and concluded
> >that a hybrid electric set up would be possible. Using 2 90 amp
> >12 V alternators to produce about 120 amps would convert to
> >about 2 hp. It might take a 8 or 10 hp engine to run them but
> >a 2 hp electric motor will do about the same work as a 4 or 5 hp
> >IC engine You would not necessarily need a IC engine capable
> >of developing full power of the electric motor. The battery bank
> >could greatly increases the output of the electric motor for fairly
> >lone periods of time.
> >
> >I see several advantages to the system. First the motor starts
> >instantly every time when running off batteries. The shaft can be
> >parallel to the thrust line because the motor can be mounted
> >in the keel. You have a great deal more control of the motor
> >a low RPM. The IC motor does not have sit smack in the middle
> >of the boat just where you want to be it could be mounted to one
> >side under the seat and the batteries mounted on the opposite side
> >to balance the weight. Most of the time you could run on batteries
> >alone with no need of the IC engine. Some folks would probably
> >not even install and IC engine If all they needed and auxiliary for
> >was to clear the harbor and maneuver in tight spots.
> >
> >I see a few draw backs as well. Over all higher cost. More parts
> >make more places for problems and more cost of maintenance. Poorer
> >over all efficiency. If you had to make a long run on the
auxiliary
you
> >would probably need a bigger IC engine to get the same performance
> >as a conventional set up.
> >
> >Just some thoughts.
> >
> >Gordon
> >
> >Gordon Couger gcouger@c...
> >
> >Stillwater, OK www.couger.com/gcouger
> >405 624-2855 GMT -6:00
> >
> >
>
>
______________________________________________________________________
__
> Get Your Private, Free E-mail from MSN Hotmail at
http://www.hotmail.com
Hi Gordon,
Have you heard of "The Electric Wheel"? I picked up a brochure at the
Annapolis boat show in '97 or '98, and I am still not quite sure what it is.
I quote from the brochure:
"The sailboat did 6k for 17-1/2 hrs (1200 watts burn rate) from a single
charge, with three solar panels and regenerative feedback." "The sailboat
did 2.7k with only one motor, demonstrating the redundant emergency
operation." The boat was an old 33' mahogany yacht. The principle seems to
be very high power at very low rpm. Weighs 50lbs.
Ed Haile
Get Your Private, Free E-mail from MSN Hotmail athttp://www.hotmail.com
Have you heard of "The Electric Wheel"? I picked up a brochure at the
Annapolis boat show in '97 or '98, and I am still not quite sure what it is.
I quote from the brochure:
"The sailboat did 6k for 17-1/2 hrs (1200 watts burn rate) from a single
charge, with three solar panels and regenerative feedback." "The sailboat
did 2.7k with only one motor, demonstrating the redundant emergency
operation." The boat was an old 33' mahogany yacht. The principle seems to
be very high power at very low rpm. Weighs 50lbs.
Ed Haile
>From: Gordon Couger <gcouger@...>________________________________________________________________________
>Reply-To:bolger@egroups.com
>To:bolger@...
>Subject: [bolger] Electric auxiliary engine
>Date: Mon, 1 May 2000 20:08:52 -0500
>
>I was looking at this issue of MIB and noticing what an intrusion the
>engine compartment made in Bolger's small cruiser.
>
>Wheels started turning in my head, did a little math and concluded
>that a hybrid electric set up would be possible. Using 2 90 amp
>12 V alternators to produce about 120 amps would convert to
>about 2 hp. It might take a 8 or 10 hp engine to run them but
>a 2 hp electric motor will do about the same work as a 4 or 5 hp
>IC engine You would not necessarily need a IC engine capable
>of developing full power of the electric motor. The battery bank
>could greatly increases the output of the electric motor for fairly
>lone periods of time.
>
>I see several advantages to the system. First the motor starts
>instantly every time when running off batteries. The shaft can be
>parallel to the thrust line because the motor can be mounted
>in the keel. You have a great deal more control of the motor
>a low RPM. The IC motor does not have sit smack in the middle
>of the boat just where you want to be it could be mounted to one
>side under the seat and the batteries mounted on the opposite side
>to balance the weight. Most of the time you could run on batteries
>alone with no need of the IC engine. Some folks would probably
>not even install and IC engine If all they needed and auxiliary for
>was to clear the harbor and maneuver in tight spots.
>
>I see a few draw backs as well. Over all higher cost. More parts
>make more places for problems and more cost of maintenance. Poorer
>over all efficiency. If you had to make a long run on the auxiliary you
>would probably need a bigger IC engine to get the same performance
>as a conventional set up.
>
>Just some thoughts.
>
>Gordon
>
>Gordon Cougergcouger@...
>
>Stillwater, OK www.couger.com/gcouger
>405 624-2855 GMT -6:00
>
>
Get Your Private, Free E-mail from MSN Hotmail athttp://www.hotmail.com
We don't seem to have the thievery problem here in gun-totin' Southeast
USA...
I didn't like the fumes (2-stroke), noise, or the drag (my well was small,
couldn't tilt the outboard for sailing). Also, it takes up valuable space
and cuts out a lot of planing area aft in a planing boat. There, that's my
whole rant.
Don Hodges
dhodges@...
http://www.ecoastlife.com
Your Cyber-Vacation - Loafing on the Emerald Coast
Small Boats, Building, Fishing, Paddling, Rowing, Sailing
USA...
I didn't like the fumes (2-stroke), noise, or the drag (my well was small,
couldn't tilt the outboard for sailing). Also, it takes up valuable space
and cuts out a lot of planing area aft in a planing boat. There, that's my
whole rant.
Don Hodges
dhodges@...
http://www.ecoastlife.com
Your Cyber-Vacation - Loafing on the Emerald Coast
Small Boats, Building, Fishing, Paddling, Rowing, Sailing
----- Original Message -----
From: Roger Dewhurst <dewhurst@...>
To: <bolger@egroups.com>
Sent: Tuesday, May 02, 2000 8:13 AM
Subject: Re: [bolger] Electric auxiliary engine
>
> > if you put a hatch/fishing table with some lagging under over the top
of
> >the motor box, they are quieter than hanging on the transom. If you pull
the
> >motor out (it better be under 10hp) and put a prawn cooking wire cage in
you
> >can have a pretty good shower. Also the new 4-strokes are pretty quiet
(but
> >as youve doubtless noticed you pay plenty for what you dont get...noise!)
> >
>
> Some additional advantages perhaps:-
>
> The motor is not bumping around on the transom while towing.
>
> It is not exposed to tempt the thief.
>
> Old hacksaw blades can be embedded in the wood laminate of the covering
box
> making it exceedingly difficult for the thief to cut the box off to get at
> the motor. Thieves here have been known to cut the whole transom out with
a
> chain saw to get the motor! If I intended to hang the motor on the
transom
> I would embed old hacksaw blades in the transom laminate!
>
> Roger.
>
>
> ------------------------------------------------------------------------
> Now the best and coolest websites come right to you based on your
> unique interests. eTour.com is surfing without searching.
> And, it's FREE!
>http://click.egroups.com/1/3013/6/_/3457/_/957303860/
> ------------------------------------------------------------------------
>
>
>
> Whats probably worse, none the less it won a "Cruising WorldDesign
> Competition & put him on the "Map", is Dud Dix's 32foot mono withthe diesel
> under the Saloon Table.For better or worse, engines in the middle of the cabin are very
common in racing boats.
Peter
Don,
if you put a hatch/fishing table with some lagging under over the top of
the motor box, they are quieter than hanging on the transom. If you pull the
motor out (it better be under 10hp) and put a prawn cooking wire cage in you
can have a pretty good shower. Also the new 4-strokes are pretty quiet (but
as youve doubtless noticed you pay plenty for what you dont get...noise!)
Whats probably worse, none the less it won a "Cruising World Design
Competition & put him on the "Map", is Dud Dix's 32foot mono with the diesel
under the Saloon Table.
Cheers
Jeff Gilbert
if you put a hatch/fishing table with some lagging under over the top of
the motor box, they are quieter than hanging on the transom. If you pull the
motor out (it better be under 10hp) and put a prawn cooking wire cage in you
can have a pretty good shower. Also the new 4-strokes are pretty quiet (but
as youve doubtless noticed you pay plenty for what you dont get...noise!)
Whats probably worse, none the less it won a "Cruising World Design
Competition & put him on the "Map", is Dud Dix's 32foot mono with the diesel
under the Saloon Table.
Cheers
Jeff Gilbert
----- Original Message -----
From: Donald Hodges <dhodges@...>
To: <bolger@egroups.com>
Sent: Tuesday, May 02, 2000 11:08 PM
Subject: Re: [bolger] Electric auxiliary engine
If you are taking a poll, I vote against an outboard in a well - I'll spare
you my whole rant, but just imagine an outboard as a close companion inside
a small boat - I did it once in a 26 footer, never again!
Don Hodges
At 18:13 2/05/00 -0500, you wrote:
parallelogram frame which has horizontal pivoting axes also parallel to the
transom. Mounted on these you simply lift the motor with a bit of help from
a pair of big springs. You may even have to push the motor down to lock it
in the drive position.
>We don't seem to have the thievery problem here in gun-totin' SoutheastYou are lucky. Perhaps we need to tote a little more artillery!
>USA...
>Have you seen those motor mount boards that lie parallel to the transom on a
>I didn't like the fumes (2-stroke), noise, or the drag (my well was small,
>couldn't tilt the outboard for sailing).
parallelogram frame which has horizontal pivoting axes also parallel to the
transom. Mounted on these you simply lift the motor with a bit of help from
a pair of big springs. You may even have to push the motor down to lock it
in the drive position.
>Also, it takes up valuable space
>and cuts out a lot of planing area aft in a planing boat. There, that's my
>whole rant.
>
I remember seeing a hydraulic drive auxiliary system advertised in
SAIL, decades ago. By now it is a vague memory.
SAIL, decades ago. By now it is a vague memory.
--- Inbolger@egroups.com, Gordon Couger <gcouger@r...> wrote:
>
> From: "Roger Dewhurst" <dewhurst@w...>
> > >
> > >Well that burst my bubble! Next thought, How 'bout an
outboard?
;-)
> >
> > Sorry, where to you keep your bubble!!!!! How about an outboard
in a well
> > just forward of the transom?
>
> What a novel idea.
>
> Gordon
> if you put a hatch/fishing table with some lagging under over the top ofSome additional advantages perhaps:-
>the motor box, they are quieter than hanging on the transom. If you pull the
>motor out (it better be under 10hp) and put a prawn cooking wire cage in you
>can have a pretty good shower. Also the new 4-strokes are pretty quiet (but
>as youve doubtless noticed you pay plenty for what you dont get...noise!)
>
The motor is not bumping around on the transom while towing.
It is not exposed to tempt the thief.
Old hacksaw blades can be embedded in the wood laminate of the covering box
making it exceedingly difficult for the thief to cut the box off to get at
the motor. Thieves here have been known to cut the whole transom out with a
chain saw to get the motor! If I intended to hang the motor on the transom
I would embed old hacksaw blades in the transom laminate!
Roger.
At 16:35 2/05/00 -0000, you wrote:
situations. It is not necessary to look for special marine versions. But
consider the efficiencies of both pump and motor and the head losses
involved in pumping hydraulic oil around before going down this track.
Roger.
>I remember seeing a hydraulic drive auxiliary system advertised inHydraulic pump/motor combinations are common enough in general industrial
>SAIL, decades ago. By now it is a vague memory.
>
situations. It is not necessary to look for special marine versions. But
consider the efficiencies of both pump and motor and the head losses
involved in pumping hydraulic oil around before going down this track.
Roger.
If you are taking a poll, I vote against an outboard in a well - I'll spare
you my whole rant, but just imagine an outboard as a close companion inside
a small boat - I did it once in a 26 footer, never again!
Don Hodges
dhodges@...
http://www.ecoastlife.com
Your Cyber-Vacation - Loafing on the Emerald Coast
Small Boats, Building, Fishing, Paddling, Rowing, Sailing
you my whole rant, but just imagine an outboard as a close companion inside
a small boat - I did it once in a 26 footer, never again!
Don Hodges
dhodges@...
http://www.ecoastlife.com
Your Cyber-Vacation - Loafing on the Emerald Coast
Small Boats, Building, Fishing, Paddling, Rowing, Sailing
----- Original Message -----
From: Roger Dewhurst <dewhurst@...>
To: <bolger@egroups.com>
Sent: Monday, May 01, 2000 11:25 PM
Subject: Re: [bolger] Electric auxiliary engine
> At 22:27 1/05/00 -0500, you wrote:
> >> I made some enquiries in this direction. There are some very nice
> >> infinitely geared reversible pump/motor combinations, but they are not
that
> >> efficient with small engines.
> >>
> >
> >Well that burst my bubble! Next thought, How 'bout an outboard? ;-)
>
> Sorry, where to you keep your bubble!!!!! How about an outboard in a well
> just forward of the transom?
>
> Roger
>
>
> ------------------------------------------------------------------------
> Now the best and coolest websites come right to you based on your
> unique interests. eTour.com is surfing without searching.
> And, it's FREE!
>http://click.egroups.com/1/3013/6/_/3457/_/957242322/
> ------------------------------------------------------------------------
>
>
>
From: "Roger Dewhurst" <dewhurst@...>
Gordon
> >What a novel idea.
> >Well that burst my bubble! Next thought, How 'bout an outboard? ;-)
>
> Sorry, where to you keep your bubble!!!!! How about an outboard in a well
> just forward of the transom?
Gordon
At 22:27 1/05/00 -0500, you wrote:
just forward of the transom?
Roger
>> I made some enquiries in this direction. There are some very niceSorry, where to you keep your bubble!!!!! How about an outboard in a well
>> infinitely geared reversible pump/motor combinations, but they are not that
>> efficient with small engines.
>>
>
>Well that burst my bubble! Next thought, How 'bout an outboard? ;-)
just forward of the transom?
Roger
----- Original Message -----
From: "Stan Muller" <smuller@...>
To: <bolger@egroups.com>
Sent: Monday, May 01, 2000 9:57 PM
Subject: Re: [bolger] Electric auxiliary engine
> Hi Gordon,
> How about using a hydraulic pump on the ic engine, and a hydraulic
> motor in the keel. Then there are no batteries, and yet you still have
> the ability to mount the engine anywhere. You would also have near the
> efficiency of the original set up. I don't think this would cost any
> more than your electric conversion.
> Just another thought for your thought.
> All the best, Stan, Micro Tugger, Snow Goose
'lo Stan,
Hydraulics might be a consideration for 30 to 80 hp systems. They
don't have the instant start of the electric system that I think is it's
biggest benefit.
Gordon
From: "Roger Dewhurst" <dewhurst@...>
To: <bolger@...>
a 24 or 32 volt system would be a lot better.
Maybe not but to run a 2 hp electic motor will take at least
5HP or more.
Golf cart batteries are the thing. An electric system would not make
sense if you were using it as a motor sailer but it would if you need
power for docking clearing channels and emergency get to the house
at 80% of hull speed or so.
Gordon W5RED
G. C. Cougergcouger@...Stillwater, OK
www.couger.com/gcouger
"You miss 100 percent of the shots you never take." - Wayne Gretzky
To: <bolger@...>
>=========
> >Wheels started turning in my head, did a little math and concluded
> >that a hybrid electric set up would be possible. Using 2 90 amp
> >12 V alternators to produce about 120 amps would convert to
> >about 2 hp.
>
> You are going to need 5mm diameter copper wire to carry that current!
a 24 or 32 volt system would be a lot better.
>=============
> > It might take a 8 or 10 hp engine to run them
>
> I do not think that the efficiency would be quite that low.
Maybe not but to run a 2 hp electic motor will take at least
5HP or more.
>to
> >IC engine You would not necessarily need a IC engine capable
> >of developing full power of the electric motor. The battery bank
> >could greatly increases the output of the electric motor for fairly
> >long periods of time.
>
> Say you have got a couple of 40 ampere-hour batteries, you are not going
> get an hour running time. You are not going to make do with ordinary car=====
> batteries either.
Golf cart batteries are the thing. An electric system would not make
sense if you were using it as a motor sailer but it would if you need
power for docking clearing channels and emergency get to the house
at 80% of hull speed or so.
Gordon W5RED
G. C. Cougergcouger@...Stillwater, OK
www.couger.com/gcouger
"You miss 100 percent of the shots you never take." - Wayne Gretzky
Well if money was no object....I see where Toyota and some others use both
internal combustion and electric with a computer to tell it all when to run
off of which powerplant using what kind of power source. On their car I
think the IC can drive either an alternator to run the electric motor or can
be used for direct drive...And for a boat, if drag could be tolerated, the
prop could turn the alternator when sailing. What great fun to think about a
test vessel... "Hey, It could happen"....Regards, Warren
internal combustion and electric with a computer to tell it all when to run
off of which powerplant using what kind of power source. On their car I
think the IC can drive either an alternator to run the electric motor or can
be used for direct drive...And for a boat, if drag could be tolerated, the
prop could turn the alternator when sailing. What great fun to think about a
test vessel... "Hey, It could happen"....Regards, Warren
> I made some enquiries in this direction. There are some very niceWell that burst my bubble! Next thought, How 'bout an outboard? ;-)
> infinitely geared reversible pump/motor combinations, but they are not that
> efficient with small engines.
>
Stan, Micro Tugger, Snow Goose
Hi Gordon,
How about using a hydraulic pump on the ic engine, and a hydraulic
motor in the keel. Then there are no batteries, and yet you still have
the ability to mount the engine anywhere. You would also have near the
efficiency of the original set up. I don't think this would cost any
more than your electric conversion.
Just another thought for your thought.
All the best, Stan, Micro Tugger, Snow Goose
How about using a hydraulic pump on the ic engine, and a hydraulic
motor in the keel. Then there are no batteries, and yet you still have
the ability to mount the engine anywhere. You would also have near the
efficiency of the original set up. I don't think this would cost any
more than your electric conversion.
Just another thought for your thought.
All the best, Stan, Micro Tugger, Snow Goose
> How about using a hydraulic pump on the ic engine, and a hydraulicI made some enquiries in this direction. There are some very nice
>motor in the keel. Then there are no batteries, and yet you still have
>the ability to mount the engine anywhere. You would also have near the
>efficiency of the original set up. I don't think this would cost any
>more than your electric conversion.
infinitely geared reversible pump/motor combinations, but they are not that
efficient with small engines.
Roger.
>Wheels started turning in my head, did a little math and concludedYou are going to need 5mm diameter copper wire to carry that current!
>that a hybrid electric set up would be possible. Using 2 90 amp
>12 V alternators to produce about 120 amps would convert to
>about 2 hp.
> It might take a 8 or 10 hp engine to run themI do not think that the efficiency would be quite that low.
>IC engine You would not necessarily need a IC engine capableSay you have got a couple of 40 ampere-hour batteries, you are not going to
>of developing full power of the electric motor. The battery bank
>could greatly increases the output of the electric motor for fairly
>long periods of time.
get an hour running time. You are not going to make do with ordinary car
batteries either.
Roger.