[ausev] GE 11.5 inch motor
loopcat at yahoo.com
Fri Jan 4 04:33:49 GMT 2008
Jim Husted of Hi-Torque Electric took the time to look
over a few pictures of my GE-11.5 and stated...
"Looks like a great motor, maybe a tad larger than
you'd need again depending on your voltage and end
weight. You'll probably need to advance the timing if
the voltage goesabove twice it's data tag voltage
(which I can't make out). You didn't list any stats
as to what you're looking at using. Anyway it's very
The overall trend is towards larger motors, bigger
donors, and higher voltage. The myths that electric
cars are all slow with limited range are been busted!
The high performance EV's really pushing the envelope
of speed and power, showing the public what is really
possible. When Chris R rolls that truck out, it will
be AWESOME! A 400lbs electric monster motor?! Dude, I
can smell the burning rubber already! LOL! OUCH!!
My dreams need to be more modest. A reliable car, 50
mile range, 70mph would make me a very happy man.
Looking for a solid BMW, saab or Volvo. Something that
has a sturdy frame and space for the batteries.
Thinking that it comes down to how many batteries can
I carry. There is a WEIGHT/POWER ratio at work here. I
want a donor that can handle both.
Peace..John in SA
--- Chris Robison <chris at chrisrobison.org> wrote:
> Brian Lasseter wrote:
> > On Jan 2, 2008 3:59 PM, loopcat
> <loopcat at yahoo.com> wrote:
> >> Great! Now it's time to find a good donor car.
> >> leaning towards a BMW/saab/volvo station wagon.
> >> should give enough space and strength for the
> >> batteries. I thinking that a compact car might be
> >> small for this motor. Any thoughts on a good
> >> make/model?
> > Eek... A BMW, or saab, or volvo? Really the curb
> weight of the
> > vehicle should be a main buying factor. BMW's,
> Saab's, and Volvo's
> > are all very heavy, at least 3000 pounds. Light
> cars are a must...
> > finding a light car that is strong enough for
> batteries is a little
> > more tricky, but doable.
> Given John's motor choice, I disagree with this --
> at least on what
> information we have, until I get a better idea of
> the motor's
> > I am partial to Saturns. All pre-2002 Saturns are
> less than 2400 lbs
> > curb weight. I am personally using a 9" ADC motor
> with a 2002 Saturn
> > SL, at 2400 lbs.
> I am uncertain that his motor would fit in a Saturn.
> Even with the 9"
> motor, we were almost unable to put any batteries
> above it, which would
> have made it very difficult to achieve a suitable
> voltage and/or
> capacity. As it is, there is little air gap between
> the motor and
> batteries. A more definite limitation is the
> distance to the CV joint in
> a transverse drivetrain. Farver's 10.7" Kostov
> barely fit, I forget the
> clearance but it wasn't much.
> > You will note that among other people with big
> motors... They mostly
> > have lighter cars. Mark Farver has a 1987 Toyota
> MR2, at 2400 lbs,
> > with an 11" Kostov. Chris Robison has a heavier
> 1999 Isuzu Hombre
> > pickup truck, at 3300 lbs, with a 13" Warp motor.
> I think this is a statement based on unrealistic
> examples for someone
> who wants an average to above-average vehicle.
> Farver's intention was a
> very high performance car, built for autocross and
> donuts in parking
> lots. :o) At 1000A, acceleration in his car is
> extreme, and is
> traction-limited. This is *not* a normal
> application. Mine is even more
> abnormal; I'm hoping for 100mph and between 12 and
> 13 seconds in the
> quarter mile, and I think achieving effective
> traction will be among my
> most challenging problems. I'm expecting a peak of
> about 1200 ft-lbs of
> torque, which is in Freightliner territory. Could
> not find a stock
> transmission that would handle the torque, so I'm
> going direct drive for
> now. Not a standard application.
> 11-13" motors are typically used in heavy
> conversions that need high
> sustained output with lower temperature rise per
> amp, to overcome
> substantial aero drag. An example is the GMC G-Van
> from 1989, which used
> an approximately 12" motor, 18 inches long, made by
> a British company
> called Nelco. It was over 380 lbs, which is close to
> the weight of my
> Warp 13. Original curb weight with lead-acid was
> 8600 lbs, 7000 with
> nicad. Controller current was 500A, pack voltage was
> 216 volts. Even
> with these limits, the van was very powerful,
> capable of heavy hauling
> and towing.
> EVAlbum examples:
> You'd get decent performance in a small bus with a
> > You could get a BMW 3 series, E90, at around
> 3300lbs... but your motor
> > would not match Chris's Warp 13"... and you would
> not have a happy
> > car.
> I think the car wouldn't be happy, but for different
> If normal or somewhat sporty performance is your
> goal, I would *not*
> recommend a motor of this size. Too heavy, too much
> motor. A 9" motor is
> more than sufficient even for a light truck. S10s
> are typically
> converted using a single 9" motor, and these are a
> lot less aerodynamic
> than a small to midsize sedan or coupe would be. And
> Farver's MR2 is for
> the moment fitted with Aaron's 9" ADC motor. Power
> output is not
> substantially reduced; the main difference is faster
> heating due to
> smaller conductors and brushes, plus higher current
> required for the
> same torque. Peak power can't be maintained as long.
> A 300-400lb motor will need a stout vehicle to carry
> it. You'll fill up
> space otherwise useable for batteries. And you'll
> need to limit motor
> current or find a transmission that can take the
> torque -- for example
> my S10 transmission had a rated input shaft limit of
> 170 ft-lbs, and I'm
> sure you'll get a lot more than that out of this
> motor at 1000A.
> Basically, if John's motor will do what I'm starting
> to think it will,
> a) he'll be putting it into a big vehicle, b) he'll
> be getting *really*
> good performance with it, and/or c) he'll break
> something. And again, if
> it's going to go in a FWD vehicle, make sure it
> won't be too big to fit
> beside the CV joint.
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