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(ET) 48v ET

One of the reasons I think a 48 volt system os good os that I am thinking of doing a conversion, which , means I get the correct motor voltages at the outset. I am thinking that there are a lot of 48v forklifts out there, and there would be contactors, relays, motors, hydraulic pumps, Etc. available as junk. if one was in the right place at the right time. One of the reasons I haven't picked up an electrak yet is that they are expensive and rare out here in cali, and I am not 100% sure one will be up to the job I have for it. We currently use a 43 HP kubota on our 60 acre ranch. There are definitely some things that a smaller tractor would do just fine, but I am actually thinking of converting a larger tractor like the pictures I found here: 
 http://www.renewables.com/tracpage1.html
We have electric golf carts that we use for all sorts of things and the first conversion will be a 48v golf cart so we can use electricity for weed eating, chainsawing, welding, and running the well when the power goes out. it is possible I will end up with a double battery bank which would handicap the mobility a bit with the weight but enhance the electrical out put. 
EBAY has tons of random motors and misc electrcal stuff.
Nothing that time and money won't do! :-)
anton
P.S. I love hearing about all the solar charging ideas, I hope to do a "solar roof " on a golf cart. 

On May 28, 2004, at 8:57 AM, Anton Berteaux wrote:
don't know if this is what you are talking about, but it is a reliable company that is producing and selling right now. 
Anton
http://www.evergreensolar.com/egsolar1/eg_technology.htm

On May 28, 2004, at 7:14 AM, Dave Reuter wrote:



Hi Robert,
I remember just a few weeks ago reading about a company that is tooling up to start producing wafers that will reduce the cost of PV panels to 20% of the cost of todays panels. Apparently they have found a process that allows for a much lower manufacturing cost of the wafer. I'll have to see if I can 
find this article again. I think they said it is still a few years out
before these panels get to the consumers due to testing and so forth. And one concern of theirs was will the final distributor past the cost savings 
to the customers.

Dave Reuter




             robert winfield
             <winfield100@yaho
o.com> To 
             Sent by:                  elec-trak cosmos phy tufts edu
elec-trak-bounces cc 
             @cosmos.phy.tufts
.edu Subject 
                                       [RMX:#] (ET) 48v ET

             05/28/2004 09:04
             AM







Is a 48v ET doable? It would make things much simpler.
I could yank out that dratted charger and squeeze 4
batteries in that area. E12
Obviously it wouldn't void the warrenty but would it
fry the components with 33% more voltage. (visions of
Tim "tooltime" breaking stuff)
I am setting up Photovoltaics to do my charging
(shortage of big wattage PV in the US, Germany, soon
Italy and Spain are greening their countries with
federal subsidies so our prices are up)
24 and 48 volts seem a lot easier to get components
for

--- Anton Berteaux <krustyacres earthlink net> wrote:

also very much less efficient, and most of the
better quality (read
expensive ) electronic inverters are very close to
sine wave with less
distortion than a generator.
I would up the system voltage to 48, which allows
use of many off the
shelf inverters, and makes you go faster, too.
anton

On May 27, 2004, at 10:46 AM, Dan Conine wrote:


A rotary inverter (in this case) is a 36VDC motor

which is run by the

tractor. The motor is directly coupled to a 110VAC

generator.


You get perfect sinusoidal power, vs. the

psuedo-simulated(modified

sine wave) power from a solid-state inverter.

Simple, relatively easy

to repair if you are living with a soldering iron

and a roll of magnet

wire, and  civilization is gone.
Disadvantage: brushes, bearings, armatures wear

out.


Dan Conine
42
E15, E10
Belgium,WI


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