Skotte Posted March 7, 2009 Share Posted March 7, 2009 I may sound loony but I think it would be good if we had the option of getting cars like... http://www.youtube.com/watch?v=nRzjcto3qmc I'd want an electric version with a solar panel roof Link to comment Share on other sites More sharing options...
PureSnipe Posted March 7, 2009 Share Posted March 7, 2009 Not loony at all. An electric motor powered car is much more practical than an internal combustion engine. They're smaller, lighter, and unlike a typical internal combustion engine which has a curve in the powerband, meaning they deliver the most torque and horsepower in a certain RPM range, an electric motor doesn't have an effective range. It's putting out the same power at 1k RPM as it is at 100k RPM. Link to comment Share on other sites More sharing options...
antonkr Posted March 8, 2009 Share Posted March 8, 2009 I don't want to upset anyone but I DON'T CAREWe have bigger problems right now like crisis Link to comment Share on other sites More sharing options...
GETbacon Posted March 10, 2009 Share Posted March 10, 2009 Here are my views on global warming in Canada. wheal all you guys aren't getting snow it's coming up here and snowing in spring...SPRING... oh well that's Canada for you Link to comment Share on other sites More sharing options...
wasder Posted March 11, 2009 Author Share Posted March 11, 2009 Not loony at all. An electric motor powered car is much more practical than an internal combustion engine. They're smaller, lighter, and unlike a typical internal combustion engine which has a curve in the powerband, meaning they deliver the most torque and horsepower in a certain RPM range, an electric motor doesn't have an effective range. It's putting out the same power at 1k RPM as it is at 100k RPM.The problem is the battery weight. A viable electric car with a good range needs a lot of heavy batteries, plus a high charging time. The way forward lies in hydrogen. The electric car is actually less practical than a combustion engine, and so it couldn't be the way forward. We would be going backwards. Link to comment Share on other sites More sharing options...
PureSnipe Posted March 11, 2009 Share Posted March 11, 2009 http://www.teslamotors.com/Already in production: Electric sports cars. Problem with hydrogen is that, well, first collision that causes a slight spark, and KABOOM!!244 miles per charge with the roadster. Link to comment Share on other sites More sharing options...
wasder Posted March 11, 2009 Author Share Posted March 11, 2009 I know about the Tesla. It has a lot of heavy batteries in it, similar to those found in laptops. They weigh it down quite a bit. Hydrogen could be made safe. It can be stored on metals, we just need to find out how. Link to comment Share on other sites More sharing options...
PureSnipe Posted March 11, 2009 Share Posted March 11, 2009 I'd honestly think that people will work on improving battery weight due to the fact batteries are used most everywhere. Link to comment Share on other sites More sharing options...
roquefort Posted March 20, 2009 Share Posted March 20, 2009 Not loony at all. An electric motor powered car is much more practical than an internal combustion engine. They're smaller, lighter, and unlike a typical internal combustion engine which has a curve in the powerband, meaning they deliver the most torque and horsepower in a certain RPM range, an electric motor doesn't have an effective range. It's putting out the same power at 1k RPM as it is at 100k RPM.Have to pick up on this. You're right about the limited range of IC engines, but electric motors deliver max torque at zero speed (!) and it falls off as speed increases. If you think about it it makes sense, since the maximum magnetic pull on the rotor will naturally happen before anything starts moving ;) THere are some motor torque curves that show this at the link below if you want to plough through a very long, technical page... http://www.reliance.com/mtr/mtrthrmn.htm (Note that the horizontal axis gives percentage of max torque, not actual torque) Link to comment Share on other sites More sharing options...
PureSnipe Posted March 20, 2009 Share Posted March 20, 2009 Not loony at all. An electric motor powered car is much more practical than an internal combustion engine. They're smaller, lighter, and unlike a typical internal combustion engine which has a curve in the powerband, meaning they deliver the most torque and horsepower in a certain RPM range, an electric motor doesn't have an effective range. It's putting out the same power at 1k RPM as it is at 100k RPM.Have to pick up on this. You're right about the limited range of IC engines, but electric motors deliver max torque at zero speed (!) and it falls off as speed increases. If you think about it it makes sense, since the maximum magnetic pull on the rotor will naturally happen before anything starts moving ;) THere are some motor torque curves that show this at the link below if you want to plough through a very long, technical page... http://www.reliance.com/mtr/mtrthrmn.htm (Note that the horizontal axis gives percentage of max torque, not actual torque) Thanks for correcting me there. I must have read the article wrong. Link to comment Share on other sites More sharing options...
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