Aptera 2e Specsheet

[josh]

Spec sheet is out - being given out at TED. Confirms my measurements last night.

Official dimensions: 53" high x 91.0" wide x 173" long.

More specs from sheet:
111" wheelbase
80.5" front track.
0.15 Coef of drag
5" ground clearance
1500 lbs curb wt.

Electric motor torque: 60FtLb torque
110v 15A charge time: 8 hrs.
Battery output: 10-13 KWh battery pack.
Battery voltage: 336V DC Nominal Tractoon Voltage
Transmission: Gear box 10:1 ratio

Full list of standard and optional equipment is here. Will post when I get back to my room.

[aptera1213]

wow, thanks josh


great to know they have standard and optional equipment info out...yeah!!

now get back to your room stat!


mmmm, gotta take some time and wrap my head around the 91 inches in width...

4.5 inches wider than a H1....

[KarenRei]

Great info! I'll do some quick google searches for comparison values.

111" wheelbase, 80.5" front track.

Comparison:
* 2006 Hummer H1: 130" wheelbase, 71.6" front track
* 2005 Hummer H2 SUT: 122.8" wheelbase, 69.4" front track
* 2007 Hummer H3: 111.9" wheelbase, 65.0" front track
* 2006 Prius: 106.3" wheelbase, 59.4" front track
* 2008 Miata: 91.7" wheelbase, 58.7" front track (Update: thanks for catching the typo!)

0.15 Coef of drag

Comparison:
* EV1: 0.195
* 2004 Prius: 0.26
* 2001 Prius: 0.29
* 2001 Civic: 0.36
* Hummer H2: 0.57

Note that even better would be comparing drag area... but this is a start, and the Aptera doesn't appear to have a large cross-section, either.

5" ground clearance

Comparison:
* Hummer H1: 16"
* Hummer H2: 10"
* Hummer H3: 9.1"
* Rav4: 7.5"
* Prius: ~4" to 5.5"
* Civic: ~4" to 5.5"

1500 lbs curb wt.

Should be obvious

Electric motor torque: 60FtLb torque

But... at what RPM? :P If it can do that at 9,000 RPM, that'd be 76.6kW (102hp). If it can only do that at 5,000 RPM, that'd be 42.6kW(57hp). Now, of course, boost those numbers in your mind given the low weight and the high torque at low speeds aspect of electric motors, but still, there's a big difference in what we could be dealing with here.

110v 15A charge time: 8 hrs.

In the interview with Steve where he mentioned an optional higher power charger, the charge time for 110v 15A was stated at "8-10 hours". Not sure if there's any implication to them just stating 8.

Battery output: 10-13 KWh battery pack.

Wooo, battery options! That extra 3kWh should be expected to cost *at least* $1.5k. That'd be with no profit and a good deal on cells. I wouldn't be surprised to see it go for $2.5k or more. Still, that sounds tempting. Potentially 125 miles range in the EPA combined drivecycle, mayhaps?

Battery voltage: 336V DC Nominal Traction Voltage

Quite reasonable for li-ion.

Transmission: Gear box 10:1 ratio

Well, good to know, but we could sure use some other stats to know the implications of that. Such as the RPM range and how much torque it can produce at what RPMs. Hmm... if we assume a 90mph top speed, which has been mentioned before, and 22.5" diameter tires (70.686" circumference), that'd mean a 13440 RPM redline (1/10 X rotations/minute * 60 minutes/hour * 70.686 inches/rotation * 1.5783e-5 miles/inch = 90 miles/hour, solve for X).

I wonder what percent of max horsepower could be expected to be delivered at that speed? I may need to do a bit of research... Hmm, found curves for two very different EVs, and both had the horsepower at redline about 70% that of at peak, with peak in both cases being about 2/3rds of the RPM of the redline. If we make that assumption here, then we have 60FtLb being delivered at 9,000 RPM, which would be 76.6kW (102hp) at about 60mph.

But do realize that there's a lot of assumptions involved in the above math. If I had to wager, I'd guess I'm overestimating peak horsepower. Also, a 13,440 RPM would be impressive if true; the Tesla Roadster's is 14k. I'd love to have more numbers; as always, I'm an insatiable data leech.

Full list of standard and optional equipment is here. Will post when I get back to my room.

Thanks!

[speculawyer]

Well . . . with that super-wide wheel base and the even-lower-now profile, I really don't think anyone can criticize the Aptera 3-wheel design as being likely to flip over at all. It is probably much less likely to flip than big tall SUVs.

Time for me to measure the entrance to my garage.

[speculawyer]

Originally Posted by KarenRei

But... at what RPM? :P

[/quote]
Isn't it the same torque at pretty much all RPM for an electric motor? (except near the high-end RPM for the motor.)

[aptera1213]

front track is 80.5?? so you take off basically 5 inches on each side if you remove the wheel wells??

sounds great, but i doesn't look to me like the wells go 5 inches past the wheel edge??

but cool if so...looks like i will be doing a lot of riding pantsless....

gah, is there even such a word as pantsless??

[aptera1213]

2008 miata info...:

External dimensions: overall length (inches): 157.3, overall width (inches): 67.7, overall height (inches): 49.0,
wheelbase (inches): 91.7, front track (inches): 58.7, rear track (inches): 58.9 and curb to curb turning circle (feet): 15.4

so front track is 58.7 inches, similar to the prius

[zguitar71]

Originally Posted by KarenRei

* 2008 Miata: 91.7" wheelbase, 85.7" front track

That is a very wide track for a 92" wheel base, major stability problems at speed.

edit: I see apter1213 saw that too.

[zguitar71]

Originally Posted by aptera1213

front track is 80.5?? so you take off basically 5 inches on each side if you remove the wheel wells??

sounds great, but i doesn't look to me like the wells go 5 inches past the wheel edge??

but cool if so...looks like i will be doing a lot of riding pantsless....

gah, is there even such a word as pantsless??

The track is measured to the center line of the wheels not the outer edges.

[aptera1213]

ah, thanks...i thought it was outer to outer....

that makes more sense...so the pants add a couple of inches to each side...