Tuesday, May 4, 2010

Re: [Electric Boats] Re: a good electric setup for a 30' pearson sailboat

 

Do you have, or can you take, some pictures of the conversion? A friend of mine has a Cheoy Lee B-30 in RI, and I would be interested in showing some pictures to him. His boat is a little heavy for the size, but at least that boat has a nice, big bilge for the batteries.
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| Jeff Griglack "Blithe Spirit" P-30 #182
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| "Don't take life so serious, son, it ain't nohow permanent"
| - Walt Kelly
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----- Original Message ----
> From: Eric <ewdysar@yahoo.com>
> To: electricboats@yahoogroups.com
> Sent: Tue, May 4, 2010 12:13:17 PM
> Subject: [Electric Boats] Re: a good electric setup for a 30' pearson sailboat
>
> Hi Gothvanhellsing,

Where are you located? I found that seeing a
> boat that had aleready been converted help sort out some of the details in my
> mind before I made the considerable investment for a quality drive system.
>

I'm working with James Lambden of Propulsion Marine in Santa Barbara
> while converting my Cheoy Lee 30' ketch to electric drive. If you look in
> the links section of this Yahoo group, you will find a number of companies
> selling drive solutions for your size boat. Sailboats from 26 to 32 feet
> are a good size for elcectric propulsion, big enough to cary the battery weight
> and volume, and small enough to be driven by a reasonably sized (2 - 5kW) drive
> system.

Even with considerable background in electric propulsion
> (I converted a couple of cars to electric over 15 years ago) I chose a complete
> system from a vendor to reduce the time and cost of "re-inventing the
> wheel". I think that a common fallacy is thinking that there's a bundle of
> money to be saved by converting to electric drive. My system will end up
> costing only about 25% less than repowering with a new diesel. I think
> that you'll find that even sourcing and building a complete system yourself will
> cost at least $4000 for 30' sailboat. Beyond the drive-unit, you'll need
> batteries, charger, wiring and other related gear. Adding on-board
> generation like solar, wind or fossil fuel will drive the price
> higher.

There are considerable trade-offs by converting to electric,
> spend some time researching the idea on this board and learning what you'll be
> giving up. This kind of conversion is not for everyone, but for the right
> type of boater, it can be a great idea.

Fair winds,
Eric
Marina
> del Rey, CA

--- In
> href="mailto:electricboats@yahoogroups.com">electricboats@yahoogroups.com,
> "gothvanhellsing" <romfromwow@...> wrote:
>
> I am new to the
> EV idea and am wondering what a good system would be for a 30 foot pearson
> sailboat. I am not new to electronics but am new to the idea of EV power any
> help I can get in designing a system for the boat woulsd be
> great.
>

------------------------------------

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__._,_.___
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__,_._,___
Posted by at No comments:

[Electric Boats] Re: a good electric setup for a 30' pearson sailboat

 

Hi Gothvanhellsing,

Where are you located? I found that seeing a boat that had aleready been converted help sort out some of the details in my mind before I made the considerable investment for a quality drive system.

I'm working with James Lambden of Propulsion Marine in Santa Barbara while converting my Cheoy Lee 30' ketch to electric drive. If you look in the links section of this Yahoo group, you will find a number of companies selling drive solutions for your size boat. Sailboats from 26 to 32 feet are a good size for elcectric propulsion, big enough to cary the battery weight and volume, and small enough to be driven by a reasonably sized (2 - 5kW) drive system.

Even with considerable background in electric propulsion (I converted a couple of cars to electric over 15 years ago) I chose a complete system from a vendor to reduce the time and cost of "re-inventing the wheel". I think that a common fallacy is thinking that there's a bundle of money to be saved by converting to electric drive. My system will end up costing only about 25% less than repowering with a new diesel. I think that you'll find that even sourcing and building a complete system yourself will cost at least $4000 for 30' sailboat. Beyond the drive-unit, you'll need batteries, charger, wiring and other related gear. Adding on-board generation like solar, wind or fossil fuel will drive the price higher.

There are considerable trade-offs by converting to electric, spend some time researching the idea on this board and learning what you'll be giving up. This kind of conversion is not for everyone, but for the right type of boater, it can be a great idea.

Fair winds,
Eric
Marina del Rey, CA

--- In electricboats@yahoogroups.com, "gothvanhellsing" <romfromwow@...> wrote:
>
> I am new to the EV idea and am wondering what a good system would be for a 30 foot pearson sailboat. I am not new to electronics but am new to the idea of EV power any help I can get in designing a system for the boat woulsd be great.
>

__._,_.___
.

__,_._,___
Posted by at No comments:

Re: [Electric Boats] controllor for mars brushless 48v

 

> I have some photos of it in the photos section here under Lotus Flower.

--- In electricboats@yahoogroups.com, "mboucher99" <mboucher99@...> wrote:
>
> I've considered adding a physical brake. Does anyone have a photo or other good example of how to accomplish this?
> thanks,
> mb
>
> --- In electricboats@yahoogroups.com, "acsarfkram" <acsarfkram@> wrote:
> >
> > I have a Sevcon with the delay. I added a brake mainly because I wanted to be able to lock the prop when sailing. It also works for the reverse issue. The motor control is more like using a diesel; pull the throttle all the way back (throttle down)to stop the prop then shift.
> >
> > I have some photos of it in the photos section here under Lotus Flower.
> >
> > Mark
> > Santa Cruz CA
> >
> > --- In electricboats@yahoogroups.com, "dennis wolfe" <dwolfe@> wrote:
> > >
> > > The first Sevcon PMAC I had (bought Summer 07) would not go into reverse until it sensed the prop had stopped turning forward. In my slippery launch this could take up to 15 seconds coasting down from full speed. Could be pretty scary waiting for the 'brakes' to kick in! Others reported this same issue.
> > >
> > > Sevcon modified the firmware to correct this. It will now go into reverse immediately, even if the motor is still turning the other direction. This required returning the controller to Sevcon.
> > >
> > > These products are designed with land vehicles in mind which have brakes so not having reverse available until the vehicle is stopped is actually a safety feature. On boats, no so much.
> > >
> > > If the delay is bothersome you might be able to rig a simple brake on the propshaft to stop the free wheel action. Seems unlikely the Chinese would redo the firmware for you.
> > >
> > >
> > > ----- Original Message -----
> > > From: John Raynes
> > > To: electricboats@yahoogroups.com
> > > Sent: Sunday, May 02, 2010 1:22 PM
> > > Subject: Re: [Electric Boats] controllor for mars brushless 48v
> > >
> > >
> > >
> > >
> > > Denny,
> > >
> > > I experience a lag when going from forward to reverse in my electric powerboat running my 5KW Golden brushless DC motor and Controller. Can you explain to me why? You seem to know about this as you mentioned about the Sevcon Controller.
> > >
> > > John
> > >
> > >
> > >
> > >
> > > On Sun, May 2, 2010 at 9:22 AM, dennis wolfe <dwolfe@> wrote:
> > >
> > >
> > >
> > > Sevcon PMAC will go from F to R instantly. Be sure to get the firmware version that has been updated to do this.
> > >
> > > Denny
> > >
> > > ----- Original Message -----
> > > From: mboucher99
> > > To: electricboats@yahoogroups.com
> > > Sent: Sunday, May 02, 2010 6:36 AM
> > > Subject: [Electric Boats] controllor for mars brushless 48v
> > >
> > >
> > >
> > > all,
> > > just getting back to my search for a new controller for our mars 48v brushless - powering a 5,600 lbs 27' sloop. (we never hit the water last year)
> > >
> > > we have an older controller that requires a delay between forward and reverse, making docking or mooring in our strong currents more adventuresome than the actual sailing. many recent posts seem to touch on this topic, as well as the equally fun one of drive belts riding off of edgeless pulleys) however, my electrical ignorance prevents me from gleaning the info i really need to make a decision. is there a consensus out there as to what might be the best (SIMPLE)option for us?
> > > thanks!
> > > mb in freeport maine
> > >
> >
>

__._,_.___
.

__,_._,___
Posted by at No comments:

Re: [Electric Boats] a good electric setup for a 30' pearson sailboat

 

There are a number of companies offering systems for your size boat. I went with a Thoosa 9000 system from ASMO MARINE for my 30 foot 8 ton sailboat and am very happy with it. I'm about to begin my third season using electric propulsion and could never imagine going back to a diesel. You can see the journey I made in installing it starting here: http://biankablog.blogspot.com/2008/05/going-electric.html
I'd have to say going electric was the best improvement I've made to the boat.
 
Capt. Mike
 


--- On Tue, 5/4/10, gothvanhellsing <romfromwow@gmail.com> wrote:

From: gothvanhellsing <romfromwow@gmail.com>
Subject: [Electric Boats] a good electric setup for a 30' pearson sailboat
To: electricboats@yahoogroups.com
Date: Tuesday, May 4, 2010, 2:00 AM

 
I am new to the EV idea and am wondering what a good system would be for a 30 foot pearson sailboat. I am not new to electronics but am new to the idea of EV power any help I can get in designing a system for the boat woulsd be great.

__._,_.___
.

__,_._,___
Posted by at No comments:

Re: [Electric Boats] controllor for mars brushless 48v

 

I've considered adding a physical brake. Does anyone have a photo or other good example of how to accomplish this?
thanks,
mb

--- In electricboats@yahoogroups.com, "acsarfkram" <acsarfkram@...> wrote:
>
> I have a Sevcon with the delay. I added a brake mainly because I wanted to be able to lock the prop when sailing. It also works for the reverse issue. The motor control is more like using a diesel; pull the throttle all the way back (throttle down)to stop the prop then shift.
>
> I have some photos of it in the photos section here under Lotus Flower.
>
> Mark
> Santa Cruz CA
>
> --- In electricboats@yahoogroups.com, "dennis wolfe" <dwolfe@> wrote:
> >
> > The first Sevcon PMAC I had (bought Summer 07) would not go into reverse until it sensed the prop had stopped turning forward. In my slippery launch this could take up to 15 seconds coasting down from full speed. Could be pretty scary waiting for the 'brakes' to kick in! Others reported this same issue.
> >
> > Sevcon modified the firmware to correct this. It will now go into reverse immediately, even if the motor is still turning the other direction. This required returning the controller to Sevcon.
> >
> > These products are designed with land vehicles in mind which have brakes so not having reverse available until the vehicle is stopped is actually a safety feature. On boats, no so much.
> >
> > If the delay is bothersome you might be able to rig a simple brake on the propshaft to stop the free wheel action. Seems unlikely the Chinese would redo the firmware for you.
> >
> >
> > ----- Original Message -----
> > From: John Raynes
> > To: electricboats@yahoogroups.com
> > Sent: Sunday, May 02, 2010 1:22 PM
> > Subject: Re: [Electric Boats] controllor for mars brushless 48v
> >
> >
> >
> >
> > Denny,
> >
> > I experience a lag when going from forward to reverse in my electric powerboat running my 5KW Golden brushless DC motor and Controller. Can you explain to me why? You seem to know about this as you mentioned about the Sevcon Controller.
> >
> > John
> >
> >
> >
> >
> > On Sun, May 2, 2010 at 9:22 AM, dennis wolfe <dwolfe@> wrote:
> >
> >
> >
> > Sevcon PMAC will go from F to R instantly. Be sure to get the firmware version that has been updated to do this.
> >
> > Denny
> >
> > ----- Original Message -----
> > From: mboucher99
> > To: electricboats@yahoogroups.com
> > Sent: Sunday, May 02, 2010 6:36 AM
> > Subject: [Electric Boats] controllor for mars brushless 48v
> >
> >
> >
> > all,
> > just getting back to my search for a new controller for our mars 48v brushless - powering a 5,600 lbs 27' sloop. (we never hit the water last year)
> >
> > we have an older controller that requires a delay between forward and reverse, making docking or mooring in our strong currents more adventuresome than the actual sailing. many recent posts seem to touch on this topic, as well as the equally fun one of drive belts riding off of edgeless pulleys) however, my electrical ignorance prevents me from gleaning the info i really need to make a decision. is there a consensus out there as to what might be the best (SIMPLE)option for us?
> > thanks!
> > mb in freeport maine
> >
>

__._,_.___
.

__,_._,___
Posted by at No comments:

Monday, May 3, 2010

RE: [Electric Boats] More spam

 

Thanks again Myles for all your efforts on the behalf of the many users of the this forum.

Hans K

From: Myles Twete <matwete@comcast.net>
Subject: RE: [Electric Boats] More spam
To: electricboats@yahoogroups.com
Date: Tuesday, May 4, 2010, 1:03 AM

 

Thanks for the tip---this does happen at times--- and action has been taken.

I do ensure that few, if any, spam email actually gets to the list despite many attempts annually.

Generally, we're pretty immune due to all new members being moderated.

 

-myles twete, moderator

 

 

From: electricboats@ yahoogroups. com [mailto:electricboa ts@yahoogroups. com] On Behalf Of Eric
Sent: Monday, May 03, 2010 3:48 PM
To: electricboats@ yahoogroups. com
Subject: [Electric Boats] More spam

 

 

It looks like we've been spammed again. beverlyhillscaviar posted links in the link section that are not e-boat related. Can a moderator please clean those entries out of the site and ban the poster.

Thanks,
Eric


__._,_.___
.

__,_._,___
Posted by at No comments:

RE: [Electric Boats] More spam

 

Thanks for the tip---this does happen at times--- and action has been taken.

I do ensure that few, if any, spam email actually gets to the list despite many attempts annually.

Generally, we’re pretty immune due to all new members being moderated.

 

-myles twete, moderator

 

 

From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com] On Behalf Of Eric
Sent: Monday, May 03, 2010 3:48 PM
To: electricboats@yahoogroups.com
Subject: [Electric Boats] More spam

 

 

It looks like we've been spammed again. beverlyhillscaviar posted links in the link section that are not e-boat related. Can a moderator please clean those entries out of the site and ban the poster.

Thanks,
Eric

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.

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Posted by at No comments:
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