T-Pain Is On A Boat

Re: [Electric Boats] 48 volt DC alternator for charging

Leese-Neville makes a 48v 100a alternator.

You might also consider a replacement part from John Deere. I made 48v bldc motors for their commercial turf care greens mowers which had 48v 100a alternators on the Kubota engines

Find the greens mower using a TCA14327 brushless motor and you'll have the alternator. (The bldc motor is 3200rpm no-load, rated at 2800rpm for 2.5kw continuous. The JD controller is not designed for variable speed operation, however.)

Be Well,

Arby

On May 3, 2010, at 9:03 AM, "zendodeb" <zendodeb@gmail.com> wrote:

Does anyone know of a source for 48 volt alternators?

There is a plan for using a small gas motor and a 12-volt alternator for 12-volt battery charging. I would like to build something similar for 48-volt charging.

I can find 12, 24 and 36, but not 48.

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[Electric Boats] 48 volt DC alternator for charging

Does anyone know of a source for 48 volt alternators?

There is a plan for using a small gas motor and a 12-volt alternator for 12-volt battery charging. I would like to build something similar for 48-volt charging.

I can find 12, 24 and 36, but not 48.

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[Electric Boats] 14 ft runabout

Hello All,
I am new to the group and have been surfing through the posts and wanted to see if I could get some help with my setup. I have a 14ft runabout with a 5 1/2 ft beam. I am not looking to make it a speed boat or anything I just want to cruise around at 5-6 mph on our local lake without all the noise. Its an old 1964 model boat and the outboard is doa. I am looking for cheapest possible solution right now and with time may upgrade to an inboard system later. Will a 50+ thrust trolling motor push the boat that speed? Does adding a second motor help?
Thanks for any help
Troy

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Updates in Your Groups, May 2, 2010

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electricboats-Electric Boats

oleliver posted a file "EBOAT PMDC MODEL SPREADSHEET.xls" to the Motors and Drives/Mars ME0201013001 folder

dirtywonton added a photo to the -- Electric Canoes and Small Craft -- folder

dirtywonton commented on a photo in the -- Electric Canoes and Small Craft -- album

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

On 03/05/10 04:58, aweekdaysailor wrote:
> The SEVCON PMAC solves this problem - order from Thunderstruck-ev and tell them it's for a sailboat - they will put the right "personality" into the flash.
>
> I believe the MARS controller (the current one) also solves this problem - but cannot personally verify. B
>

The delay is designed in, it isn't a problem as such. It's to stop the
EV people from killing motors/controllers/drive chains by throwing a
forward moving vehicle into reverse. It really does put a lot of stress
on the system doing this.
(I'm learning to drive vintage trams at the moment - '3rd emergency'
is to throw the thing into reverse - after doing so the tram is to be
driven at low speed straight back to the depot for inspection!)

However this interlock isn't so appropriate for a boating application
where the propeller will cavitate instead of snapping something.

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

Try James Lambden at Propulsion Marine:

http://www.propulsionmarine.com/electric_propulsion.htm

--- In electricboats@yahoogroups.com, "mboucher99" <mboucher99@...> wrote:
>
> 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
>