T-Pain Is On A Boat: Re: [Electric Boats] New To the forum and thinking of Repowering a 65 motor s...

Here is a link to a torque and hp curve for a 130hp naturally aspirated Perkins of similar displacement and only 30 hp less, The Lehman's hp is rated at 160 with the turbo, but you will not be using much or any turbo boost at cruising speed on the Wellington. Check hp and torque at the throttle setting (RPM) at which the boat makes 10kts and you should be reasonably close to the requirements for your electric setup.

George Johnson

http://www.perkins-sabre.com/Engines/M130C/Performance.cfm.

On Thu, Jan 13, 2011 at 2:19 PM, ibles_world <ibles_world@yahoo.com> wrote:

No im not considering changing the prop, it doesnt make sense, I cant find a power curve for my motor, so thats out of the question... havent found a leaman user group either... no one likes them that much.... the prop can be adjusted on the hard for a different pitch setting. once the electrics are in then I can re calibrate the prop.

--- In electricboats@yahoogroups.com, GeoMar Logistics <geomarlogistics@...> wrote:
>
> *I am not a naval architect, but I think you no more need a 48" wheel than

> you do a 1000 hp turbo diesel. If the boat does 10 knots now at a particular
> throttle setting(RPM). Check the Lehman power curve and determine the HP and
> torque produced at that RPM. Size your electric motor accordingly. I could
> be wrong, but this ain't rocket science.
> *
> On Thu, Jan 13, 2011 at 12:41 AM, <GNHBus@...> wrote:
>
> >
> >
> > Thanks Nicholas,
> > Awesome video. Nothing wrong with needing to be convinced, Im the same way.
> > Im going to look into what a 48" prop, e-hybrid solution will produce on
> > this hull.
> > Best Regards
> > George
> >
> >
> > In a message dated 1/11/2011 8:49:40 P.M. Eastern Standard Time,
> > ibles_world@... writes:
> >
> >
> >
> > It has a 30" Maxi full feathering prop on it right now, Im trying to keep
> > it, #1 because its expensive, but also because it drives to boat at 10+
> > knots, Also it allows the boat to sail sans prop drag, after all the boat is
> > a sail boat.....I will need to be convinced that the electric motors will
> > need a larger prop to do the same speed. I realize that electric motors have
> > more usable torque, but it should just make this prop function better than
> > running it with an ICE, but to answer your question I could fit a 48" prop
> > on to it If I so desired and found one...
> >
> > You can see a video of the hull, this is the previous owners ex-husband...
> > http://vimeo.com/9893480
> >
> > Nicholas
> >
> > --- In electricboats@yahoogroups.com <electricboats%40yahoogroups.com>,

> > GNHBus@ wrote:
> > >
> > > Hi Nicholas, yes prop, What is the largest diameter you can fit?
> > >
> > >
> > > In a message dated 1/11/2011 2:27:12 P.M. Eastern Standard Time,
> > > ibles_world@ writes:
> > >
> > >
> > >
> > >
> > >
> > > Max size wheel? where? Do you mean prop? or wheel as in pulley/gear
> > around
> > > the drive shaft to drive multiple motors? Dont think you mean wheel as in
> >
> > > steering.
> > >
> > > --- In _electricboats@yahoogroups.com <_electricboats%40yahoogroups.com>_
> >
> > > (mailto:electricboats@yahoogroups.com <electricboats%40yahoogroups.com>)

> > , GNHBus@ wrote:
> > > >
> > > > Another question, What is the maximum size wheel you can fit ?
> > > >
> > > >
> > > > In a message dated 1/11/2011 1:02:25 A.M. Eastern Standard Time,
> > > > ibles_world@ writes:
> > > >
> > > >
> > > >
> > > >
> > > > To answer your question about speed, yes 160 hp turbo - 10+ knots and I
> >
> > > did
> > > > a sea trial and received the same values and tracked and charted the
> > > boat
> > > > as it came from Anacortes, and it was a steady 8-10 knots on every leg.
> > > >
> > > > --- In __electricboats@yahoogroups.com<__electricboats%40yahoogroups.com>_
> >
> > > (mailto:_electricboats@yahoogroups.com<_electricboats%40yahoogroups.com>)
> > _
> > > > (mailto:_electricboats@yahoogroups.com<_electricboats%40yahoogroups.com>_
> >
> > > (mailto:electricboats@yahoogroups.com <electricboats%40yahoogroups.com>)

> > ) , GNHBus@ wrote:
> > > > >
> > > > > A 160hp Diesel propels a 68000 lb vessel at 10 knots ????
> > > > >
> > > > >
> > > > > In a message dated 1/10/2011 2:57:52 P.M. Eastern Standard Time,
> > > > > james@ writes:
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > Master volt has a hybrid add on that can be added to any engine, that
> >
> > > > > might be what your looking for.
> > > > >
> > > >
> > > ___
> > http://www.mastervolt.com/marine/products/hybridmaster/hybridmaster-96/___
> > > (
> > http://www.mastervolt.com/marine/products/hybridmaster/hybridmaster-96/__)
> >
> > > >
> > > (_
> > http://www.mastervolt.com/marine/products/hybridmaster/hybridmaster-96/__
> > > (
> > http://www.mastervolt.com/marine/products/hybridmaster/hybridmaster-96/_)
> > )
> > > > >
> > > >
> > > (__
> > http://www.mastervolt.com/marine/products/hybridmaster/hybridmaster-96/__
> > > (
> > http://www.mastervolt.com/marine/products/hybridmaster/hybridmaster-96/_)
> > > (_
> > http://www.mastervolt.com/marine/products/hybridmaster/hybridmaster-96/_
> > > (http://www.mastervolt.com/marine/products/hybridmaster/hybridmaster-96/)
> > )
> > > > )
> > > > >
> > > > > Out side of that the highest hp electric motor that runs at safe 48
> > > > volts
> > > > > is the Electric yacht 360i.
> > > > >
> > > >
> > > ___
> > http://www.electricyacht.com/electric-yacht-products/electric-yacht-system.__
> > > (
> > http://www.electricyacht.com/electric-yacht-products/electric-yacht-system._)
> >
> > > >
> > > (_
> > http://www.electricyacht.com/electric-yacht-products/electric-yacht-system._
> > > (
> > http://www.electricyacht.com/electric-yacht-products/electric-yacht-system.)
> > )
> > > > > html_
> > > > >
> > > >
> > > (__
> > http://www.electricyacht.com/electric-yacht-products/electric-yacht-system.html__
> > > (
> > http://www.electricyacht.com/electric-yacht-products/electric-yacht-system.html_)
> >
> > > >
> > > (_
> > http://www.electricyacht.com/electric-yacht-products/electric-yacht-system.html_
> > > (
> > http://www.electricyacht.com/electric-yacht-products/electric-yacht-system.html)
> > ) )
> > > > >
> > > > >
> > > > > There are a lot of "system" diagrams on Mastervolts site for
> > different
> > > > > types of yachts.
> > > > > They seem to recommend dual pods for your size vessel.
> > > > >
> > > > >
> > > > > Good luck and ignore the wave of negative emails that are about to
> > > come
> > > > > your way.
> > > > >
> > > > >
> > > > > On Jan 8, 2011, at 10:46 PM, "ibles_world" <ibles_world@> wrote:
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > I purchased a 65ft Motor Sailor, Wellington Design, details can be
> > > found
> > > > > here
> > > > >
> > > > >
> > > >
> > > ___
> > http://www.yachtworld.com/core/listing/boatMergedDetails.jsp?boat_id=179705__
> > > (
> > http://www.yachtworld.com/core/listing/boatMergedDetails.jsp?boat_id=179705_)
> >
> > > >
> > > (_
> > http://www.yachtworld.com/core/listing/boatMergedDetails.jsp?boat_id=179705_
> > > (
> > http://www.yachtworld.com/core/listing/boatMergedDetails.jsp?boat_id=179705)
> > )
> > > > > 2&ybw=&units=Feet&currency=USD&access=Public&listing_id=60410&url=_
> > > > >
> > > >
> > > (__
> > http://www.yachtworld.com/core/listing/boatMergedDetails.jsp?boat_id=1797052&ybw=&u__
> > > (
> > http://www.yachtworld.com/core/listing/boatMergedDetails.jsp?boat_id=1797052&ybw=&u_)
> >
> > > >
> > > (_
> > http://www.yachtworld.com/core/listing/boatMergedDetails.jsp?boat_id=1797052&ybw=&u_
> > > (
> > http://www.yachtworld.com/core/listing/boatMergedDetails.jsp?boat_id=1797052&ybw=&u)
> > )
> > > > > nits=Feet&currency=USD&access=Public&listing_id=60410&url=)
> > > > >
> > > > > I would like to re-power this craft with a diesel electric in-board
> > > > > system, I plan on taking the boat for extended cruising, I am
> > > budgeting
> > > > 30k for
> > > > > this modification, I would like to do it for less but if it cost more
> >
> > > I
> > > > > fully understand that this is a boatt = Bust Out Another Ten
> > Thousand.
> > > > >
> > > > > It is Powered by a 160hp Lehman turbo diesel engine presently
> > (Running
> > > > > well), 15' beam, 68000lbs displacement (With the current power plant)
> >
> > > it
> > > > > drafts at 6' with cruising gear, it has a Northern Lights 12.5kw
> > > > generator Will
> > > > > upgrade if I have to. Hydraulic pto generator uninstaller but will be
> >
> > > > > reinstalled, 1000 Gallon Diesel fuel tank, the solar panels are too
> > > old
> > > > and
> > > > > worthless to contribute any notable power. plan on replacing them
> > with
> > > > better
> > > > > larger flat panels
> > > > >
> > > > > The Boat does 10 knots on average and I would like a bit more if it
> > > wont
> > > > > matter too much. The boat has a walk around engine room, so space in
> > > not
> > > > an
> > > > > object. The current prop in a 3 blade variable pitch that I will be
> > > > keeping.
> > > > >
> > > > > There is much I probable left out of this post, so please ask.
> > > > >
> > > > > Thank you
> > > > >
> > > > > Nicholas
> > > > > Ible's World
> > > > >
> > > >
> > >
> >
> >
> >
>
>
>
> --
> *George Johnson
> GeoMar Logistics
> Jomtien, Chonburi
> Thailand*
>