HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Automotive News

Slideshow: Detroit Electric Unveils 'World's Fastest' Electric Sports Car

View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 2/4  >  >>
Francois Racicot
User Rank
Iron
Re: Gear box in electric car?? Really?
Francois Racicot   4/17/2013 9:45:12 AM
NO RATINGS
Thanks for this explanation, William.

Elizabeth M
User Rank
Blogger
Re: Electric hot rods
Elizabeth M   4/17/2013 8:30:55 AM
NO RATINGS
You're probably right, Battar, but I like to have a more optimistic view and hope that by making these type of cars before there is demand for them, somehow the demand eventually will be created. I hope these cars will be so good that those people who still have 200k+ gas guzzling cars will eventually give them up and go EV or hybrid.

far911
User Rank
Silver
Re: Electric Sports Car
far911   4/17/2013 5:00:35 AM
NO RATINGS
You have a good point j-allen. The main problem with gas engines is that they drain a lot of fuel in the city limits when the traffic is at its peak. Electric cars can help in this regard with their limited performance capabilities since nobody will be needing a superfast electric car when they're stuck in traffic and moving at a snail's pace. 

William K.
User Rank
Platinum
Re: Gear box in electric car?? Really?
William K.   4/16/2013 9:56:56 PM
NO RATINGS
Charles, a series-wound DC brush type motor would be a very good motor for a dragster because the torque is greatest at zero speed. The challenge there is that the current draw is greatest also. The other challenge is the range of speeds available with a given motor design. The big problem is that as the speed increases the back EMF also rises, which reduces the current, and thus the power. So to keep accellerating the supply voltage needs to keep increasing. Thus the need for gear shifting, unless the car finishes the quatrter mile befor the motor torque starts to fall off.

Charles Murray
User Rank
Blogger
Re: Gear box in electric car?? Really?
Charles Murray   4/16/2013 6:37:41 PM
NO RATINGS
I'm going to study those curves, William K. I had presumed it was more about the familiar feel of a traditional sports car, but now I'll have to check.

Charles Murray
User Rank
Blogger
Re: Electric Sports Car
Charles Murray   4/16/2013 6:35:44 PM
NO RATINGS
I agree with everything you say, J-Allen. But remember, they're only building 999 of these cars. I don't think they see a big demand for this, but there will be enthusiasts who want it.

MVRS
User Rank
Iron
Re: Electric Sports Car
MVRS   4/16/2013 5:18:21 PM
NO RATINGS
There are a fair number of them.  Just look around on the web.

William K.
User Rank
Platinum
Re: Gear box in electric car?? Really?
William K.   4/16/2013 5:12:30 PM
NO RATINGS
The motor type is described as "AC Synchronous", which is a type of motor that has a definite best operation spread of speeds. The DC series type of motor is quite different in it's speed-torque curve. So for most efficient operation different gear ratios will be quite beneficial. Study the curves and you will understand why that is.

Francois Racicot
User Rank
Iron
Gear box in electric car?? Really?
Francois Racicot   4/16/2013 4:49:56 PM
NO RATINGS
Not sure I understand the need for a gearbox in an electric car, unless you need to "feel" like a combustion engine car...  Or is it because they are using very small motors that could not sustain both high accelerations and top speeds ?

Rob Spiegel
User Rank
Blogger
Re: Odd bird car
Rob Spiegel   4/16/2013 4:18:57 PM
NO RATINGS
Those are pretty good EPA numbers, Chuck. I wonder if the Porsche EV will also have decent numbers. Maybe Porsche's EV will help that automaker meet its CAFE needs.

<<  <  Page 2/4  >  >>
Partner Zone
More Blogs from Automotive News
Lithium-ion battery prices will drop rapidly over the next 10 years, setting the stage for plug-in vehicles to reach 5%-10% of total automotive sales by the mid- to late-2020s, according to a new study.
For city dwellers, finding a parking space can be a time-consuming and downright exasperating task. Now, however, engineers may have found a solution to that old urban problem.
If Ford Motor Co.’s recent efforts in lightweighting are any indication, the auto industry is about to go on a diet.
Advanced driver-assist systems (ADAS) are poised to become a $102 billion market by 2030, but just a sliver of that technology will be applied to cars that can be fully autonomous in all conditions, according to a new study.
Using a headset and a giant ultra-high definition display, Ford Motor Co. last week provided a glimpse of how virtual reality enabled its engineers to collaborate across continents on the design of its new GT supercar.
Design News Webinar Series
6/25/2015 11:00 a.m. California / 2:00 p.m. New York
6/24/2015 11:00 a.m. California / 2:00 p.m. New York
6/11/2015 11:00 a.m. California / 2:00 p.m. New York
8/13/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 3 - 7, Developing, Testing, and Troubleshooting IPv4 and IPv6 Using Wireshark
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Course August 25-27:
Sponsored by Stratasys
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service