TREV EV, AMAZING BUT IS IT POSSIBLE?

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stuart mills
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TREV EV, AMAZING BUT IS IT POSSIBLE?

Postby stuart mills » Thu Jan 31, 2008 12:32 pm

Just read the news item on the Austrlian Trev. 150km range, 120kph and only 40kg of cells. Is that realistic?

MalcolmB
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Postby MalcolmB » Thu Jan 31, 2008 1:10 pm

According to the specs on the university site the battery pack weighs 40 kg and has a capacity of 5.5 kWh, which seems a bit high even for lithium polymer, at 137.5 Wh/kg.

To get 150 kilometres (94 miles) it must be using just under 60 Wh/mile. That's roughly what it takes to maintain a steady 30 mph on the flat on my bike, which weighs half as much but must have a pretty poor drag coefficient. It's probably achievable if you drive very carefully on a perfectly flat road. Not really an indication of normal driving range, but it does give some idea of what can be achieved by reducing weight and minimising drag. I really like the idea of a tandem two seater. It's a neat way of reducing frontal area, but to be really effective it should have a narrow track and tilt like a motorbike :D

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qdos
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Postby qdos » Thu Jan 31, 2008 1:20 pm

Reporters like to play the numbers game all the time Km for example gets a bigger number than miles. The Tesla is another one that makes big claims but in reality people won't be getting anything like the numbers cos they won't be able to keep off the pedals :wink:

stuart mills
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LiPo

Postby stuart mills » Sat Feb 02, 2008 9:59 am

Heres an interesting clip for those who havnt seen it b4
www.youtube.com/watch?v=z3o_2mwRPdw probably a good idea to buy LiFe cells instead?


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