The basis for the world's fastest electric car?
Posted on 01/23/2009 11:13:13 AM PST by ShadowAce
'Leccy Tech Shelby Super Cars has announced details of the Ultimate Aero EV, the 'leccy brother to its $620,000, 1287bhp, 257mph production car world speed record holder.
SSC reckons the Aero EV will be the fastest electric car ever when it hits the road later this year.
The Aero will be driven by SSC's electric powertrain package called AESP - All-Electric Scalable Powertrain – which SCC claims is unique due to its “scalable horsepower, light weight, compact size, quick recharge time and liquid cooling”.
The AESP is “scalable” from 200bhp for economy and mid-size cars – though we aren't sure when economy cars started having 200bhp engines under the bonnet - to 500bhp for light trucks and SUVs, and up to 1200bhp for heavy duty equipment such as buses and, presumably, for rotating small planets.
The basis for the world's fastest electric car?
Now the interesting bit: according to SCC, the leccy Aero's “Nanotechnology Rechargeable Lithium Battery pack is rechargeable in only ten minutes on a standard 110V outlet and has a 150-200 mile range on a single charge.
"This means that in a typical eight-hour day, the car using this technology could go 200 miles, charge for ten minutes - the time it typically takes to fill up a tank of gas - then drive 200 more miles, charge for ten minutes and continue on.”
Now we at Vulture Central don't claim to be top-flight electrical engineers but that claim sounds like bollo... er... suspicious to us.
A ten-minute charge time from a domestic 110V socket would be ambitious even for an electricity sipping micro-EV with a battery pack similar to that found in the more robust models of electric shaver, but the Ultimate Aero EV is a tarmac melter with a top speed presumably a fair bit above the Tesla Roadster's 125mph and, according to comments SCC made back in July 2008, a 500bhp electric motor.
SSC goes on to say that it will “wholesale the AESP to mass-production car companies, governments, and to public, private and niche businesses. Costs for mass-produced units are $5000-6000 per unit for 1000 to 10,000 units, with further reduction in unit cost for increased production.”
It all sounds too good to be true. So we suspect it may be, pending further info from SCC at least.
In the mean time, we've asked SCC for details on how exactly they plan to bend the laws of physics quite that far.
By the by, Shelby Super Cars was founded by Jerod Shelby who is not a relation of famed petrol head, race car driver and founder of Shelby Automobiles, Carroll Shelby. ®
I was wondering what Joseph Newman’s been up to.
vaporware. I’ll believe it when I see this battery produced, and when it drives 150miles without having to recharge
“Now the interesting bit: according to SCC, the leccy Aero’s “Nanotechnology Rechargeable Lithium Battery pack is rechargeable in only ten minutes on a standard 110V outlet and has a 150-200 mile range on a single charge.”
If you run 40HP for 2 hours that is about 60kwhrs. For a 110 amp circuit for 10 minutes it would have to supply about 360 KW! Please check my math.
Hence the incredulity in the article.
The article says it's a 110 Volt circuit...not 110 Amp.
I think they mean a 110 VAC 15-20 Amp circuit for recharging - typical household outlet rating.
That makes the claim of a ten minute charge (yielding approx. 360 KW) even more impossible.
Shelby Supercars makes some incredible claims about its upcoming EV
****************************EXCERPT********************************
Posted Jan 22nd 2009 at 11:08AM by Sam Abuelsamid
Filed under: EV/Plug-in
My calculations show that the "standard 110 volt outlet" better have a 1628 amp breaker on it.
Just 200 hp is 149 kW.
Unfortunately they tell us the distance but not the load, nor do they tell us the battery capacity. But let’s say you drove that 200 miles very nicely using only 50 kW (67 hp) average during the trip and it took you three hours. That’s 150 kWh.
110 VAC @ 20 A is 2.2 kW. We need to charge 150 kWh, 150/2.2 = 68 hours to charge.
An oven outlet with 240V @ 60A would still take over 10 hours.
I think houses have about 240V @ 200A going in, that’s still about three hours to charge if you don’t want to run anything else in your house.
I didn’t even count for waste in the AC/DC conversion.
Do I have my math wrong or is this claim WAY off?
My use of "110 amp" was a typo. I was referring to the 110v circuit as were my calcs.
A 20 amp circuit will deliver about 2kw per hour or about 3.3 kwhr in 10 minutes.
3.3 kwhr used over two hours yields about 1.7 kw power or about 2 horsepower.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.