On 5/23/2013 4:18 PM, Danpatgal wrote:
Lee Hart wrote
Is the 6.7" series DC motor enough for this heavy of a car?
The L91 in my LeCar is more than adequate to do 70 mph.
You don't actually go 70 in your LeCar, do you ? ;)
It takes a while to get up to 70 mph, but it does get there. :-) No, I
don't normally drive it over 55 mph, as none of the roads around here
have posted speed limits that high.
Note that I don't have the stock Lectric Leopard Prestolite 48v motor,
but instead an ADC L91. I have a Curtis 1231C controller. I also had a
132vdc pack at the time of the 70 mph speed run. It's at 120vdc now. I
haven't tried to see how fast it will go now.
I also have the L91 in my LeCar, I've maxed out at 65 (once), and with more
than 250 amps (at 120v)
Odd. Mine draws about 70 amps at 50 mph, 100 amps at 60 mph, and 150
amps at 70 mph.
I've been happy with it in the small vehicle - it's no tire burner, but I
generally keep up with traffic.
Same here. The L91 is no racing motor, but it is decent for an
around-town car.
For a small car like a Beetle, to get 50-60 miles range with
lead, you've got to have 1000 lbs of lead, or MORE.
I'd say that's about right. John Bryan was getting that kind of range
with his Karmann Ghia with 16 Optimas (about a 900 lbs pack), but he was
very good at keeping his rolling resistance low.
To me that's not worth the weight performance hit, space requirements,
hassle to keep watered, worse winter sagging, Puekert effect and short
pack life, compared to lithium.
That may all be true to some extent. There are ways to deal with all
these issues. However, I have gotten 15 years and three lead-acid packs
for less than it would have cost me for lithium. And I don't know if the
lithiums will actually have lasted that long.
I live in a small town, and lead meets my driving needs. So I'm content
to let others go first! :-)
If I had another $5k I'd have replaced the motor and controller and put in
the HPEVS AC50. Perhaps in my next build (if it ever happens) or upgrade
#2.
More money = more performance and better range. Each person just needs
to decide how much he needs, and is willing to pay.
--
Opportunity is missed by most people because it is dressed in overalls
and looks like work. -- Thomas A. Edison
--
Lee A. Hart, http://www.sunrise-ev.com/LeesEVs.htm
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