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Re: (ET) hybrid ET
Not to get too far off subject, but in a nutshell I think our ET's are
environmentally sound:
1. We are 'recycling', or keeping running, old tractors that would be
dumped
and replaced by new.
2. ICE yard tractors and lawnmowers account for signifcant amounts of air
pollution (figures not on hand, but I was surprised at how bad a problem
they are)
3. Electric vehicles, if recharged at night, esp during summer, help even
out the utilities' generating capacity, which makes them more efficient.
4. It's easier to increase efficiency and reduce pollution at a point
source
than many small, scattered, sources.
5. Use solar to recharge and really make an impact!
So I don't think it's such a downside. We do need to support
environmenatlly
sound lead-acid battery recycling.
SteveS
E20
----- Original Message -----
From: "Gordon Trump" <trumpgordon adelphia net>
To: <>
Sent: Saturday, December 06, 2003 12:24 PM
Subject: Re: (ET) hybrid ET
> True enough, as I found out.
> And, I think you would be better off with a gas tractor than the hybrid.
> A small Diesel might be better than either, except for Elec Trak
> recharged
> with renewable energy.
> Part of the downside of ElecTrak is moving the pollution back to the
> (coal
> burning?) power plant and it's 35% efficiency while we benefit from
> cleanliness in our yards.
>
>
>
> ----- Original Message -----
> From: "Dave Reuter" <david reuter iavinc com>
> To: "Gordon Trump" <trumpgordon adelphia net>
> Sent: Friday, December 05, 2003 9:48 AM
> Subject: Re: (ET) hybrid ET
>
>
>
> I was reading through your comments about the alternator. The auto
> alternator is very inefficient, I believe about 40% efficient. So it
> would
> make sense that it would use a lot more gas than a normal tractor. It
> probably seemed like you had to use twice as much gas with this device.
You
> probably did not know back then that you were developing a series hybrid
> vehicle. You were a pioneer! Look at all the hype on hybrids now. :)
>
> Dave
>
>
>
>
> "Gordon Trump"
> <trumpgordon adelphia net> To:
> <elec-trak cosmos phy tufts edu>
> Sent by: cc:
> elec-trak-bounces cosmos ph Subject: (ET)
> hybrid ET
> y.tufts.edu
>
>
>
> 12/04/2003 12:50 PM
>
>
>
>
>
>
> I did this with my E20 in the early 80s. Could not afford 6 new batteries
> to replace weak ones, had 8HP engine laying there...
> Mounted the engine (vertical shaft B&S from a riding mower) where the
> weight box/range pack had been. It had electric start, tapped off the
> lowest 2 batteries.
> Used a 110 amp Mopar car alternator and a home-brew regulator to get 40
VDC
> out of it. Used 1 v belt, should have had 2. The alternator need to go
4000
> rpm to get any useful power- pulley sizing is important.
>
> What did I learn?
> A. If batteries are at least OK, it will add range and let you "catch up"
> the charge when the tractor is not mowing too hard.
> B. If the batteries are really weak or discharged severely, it won't run
> the tractor.
> C. Pretty inefficient and unpleasant- lot of heat, noise and vibration,
gas
> consumption- worse than a regular tractor.
> D. Needed more engine and more alternator- or a gas tractor;-)
> E. Spoiled best aspects of E20. I later took it apart and bought
> batteries
> = quiet again!
> ----- Original Message -----
> From: Keith Stieg
> To: elec-trak cosmos phy tufts edu
> Sent: Wednesday, December 03, 2003 12:55 PM
> Subject: (ET) loaders
>
> E.G.& W was indeed Wright Way loaders from Eagle Grove, Iowa.
> I understand the company was in business for less than a year, before
> closing the doors. I do have a booster pack with 3- 12 volt group 31's.
> Also building A 36 volt gen. pack, Trying to turn it into a ''hybrid.''
> And a set of cast iron wheel weights, Might have to try a set of dual
> Wheels with lugs!
>
>
> Keith Stieg
>
>
>
>
>
>
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