Re: (ET) pollution

["Paul Heinzerling" <pheinzerling uakron edu>]

In my opinion, "Making Your Own Elec-Trak" does not seem to be off-topic.
My only contribution to this would be to suggest that you be careful with
the golf cart motor if it is series-wound.   If you have this type of 
motor,
it has no inherent speed regulation and can spin itself to destruction if
you run it up without a load.

Regards,

Paul


----- Original Message ----- 
From: "Max Hall" <maxmatic comcast net>
To: <elec-trak cosmos phy tufts edu>
Sent: Sunday, December 07, 2003 3:26 PM
Subject: Re: (ET) pollution


> My students and I converted a Craftsman riding mower to electric with a
> 36VDC golf car motor and a Curtis 36-48V 275A PWM. Worked fine! The one
> thing I would do differently is gear up the linkage between the motor
output
> shaft and the rest of the beast. I think the ICE on the original turned a
> little faster than the ~2000 rpm that the golfie gave at 36V. One pic can
be
> seen at the bottom of http://www.maxmatic.com/electrak.htm.
>
> PS: the thing was a gift to me by a neighbor... when the pushrod came
> through the side of the engine block. We got the benefit, as students of
> EVs, to disassemble a dead ICE. When they compare that to an e-motor, 
> they
> can hardly believe the difference in complexity and mess.
>
> If you, or anyone else wants details, feel free to email me directly.
(This
> is just about off-topic enough to close the thread.)
>
> -Max
>
>
> ----- Original Message ----- 
> From: "Anton and Federica" <krustyacres earthlink net>
> To: <elec-trak cosmos phy tufts edu>
> Sent: Sunday, December 07, 2003 2:24 PM
> Subject: Re: (ET) pollution
>
>
> >
> > Yes, of course gas mowers are cheap, and newer ones are definitely
> > easier get parts for, but I do believe that an ET in the right 
> > situation
> > is perfect, and has many inherent and synergistic advantages.
> > I run diesels on vegetable oil, and therefore never go to a gas 
> > station,
> > and I really hate to make a special trip just to fill up a can of gas
> > that tends to sit for long periods of time, to be used occasionally in
> > great quantities by the ride on mower. I also have a small enough piece
> > of property that I can get to most any spot with an extension cord, so 
> > I
> > don't even run gas chain saws much.
> > At the moment, I am not able to get an ET easily, since I am on the 
> > west
> > coast, but I will keep shopping. I also may simply convert my existing
> > ride on to electric, as I have a golf car motor, and could install a 
> > PWM
> > controller. In all my spare time.
> > Does anyone on the list have any experience converting a tractor of any
> > sort to electric?
> > I may just buy a diesel one and run it on veg oil, but would prefer
> > electric.
> > anton
> >
> > Gordon Trump wrote:
> >
> > >No disagreement about these concepts from a practical standpoint- I 
> > >was
> > >speaking conceptually. And I certainly realize that my Honda push lawn
> mower
> > >pollutes more than the SULEV Civics running around out there- it is 
> > >all
> > >about money. And as long as lawn equipment is cheap and disposable, it
> will
> > >take legislation (which I don't really favor) to clean up these small
> > >engines. Even then, they are noisy and vibrate, etc.
> > >
> > >That's why we are on this list;-)
> > >
> > >
> > >*snip*
> > >
> >
> >
> >
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>
>
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