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NeilBlanchard · 01-27-2012, 11:17 PM

I think it depends on the motor used? The SIM-LEI has the one of the lowest Wh/mile of any electric car (~134Wh/mile @ 55MPH) and it has four wheel direct drive. The Edison2 VLCe is ~108Wh/mile @ 45MPH average and it has only one speed with the final drive being chain in a reduction ratio.

The four next most efficient electric cars I know of; the Illuminati Motor Works 7 (160Wh/mile), the FVT eVaro (~165Wh/mile), and Dave Cloud's Dolphin (~165Wh/mile), and the GM EV1 (also ~165Wh/mile) all are one speed. The 7 actually has two speeds, but the taller gear was only ~2% more efficient, and a lot slower acceleration. It is hard to shift an electric car, and it takes a massively strong clutch, as well. The 7 totally ruined their racing grade clutch, and they have to shift it when stopped without it.

None of the production electric cars have a multi-speed transmission. Why is that, I wonder?

01-27-2012, 11:17 PM	#5 (permalink)
NeilBlanchard Master EcoModder Join Date: May 2008 Location: Maynard, MA Eaarth Posts: 7,907 Mica Blue - '05 Scion xA RS 2.0 Team Toyota 90 day: 42.48 mpg (US) Forest - '15 Nissan Leaf S Team Nissan 90 day: 156.46 mpg (US) Number 7 - '15 VW e-Golf SEL TEAM VW AUDI Group 90 day: 155.81 mpg (US) Thanks: 3,475 Thanked 2,950 Times in 1,844 Posts	I think it depends on the motor used? The SIM-LEI has the one of the lowest Wh/mile of any electric car (~134Wh/mile @ 55MPH) and it has four wheel direct drive. The Edison2 VLCe is ~108Wh/mile @ 45MPH average and it has only one speed with the final drive being chain in a reduction ratio. The four next most efficient electric cars I know of; the Illuminati Motor Works 7 (160Wh/mile), the FVT eVaro (~165Wh/mile), and Dave Cloud's Dolphin (~165Wh/mile), and the GM EV1 (also ~165Wh/mile) all are one speed. The 7 actually has two speeds, but the taller gear was only ~2% more efficient, and a lot slower acceleration. It is hard to shift an electric car, and it takes a massively strong clutch, as well. The 7 totally ruined their racing grade clutch, and they have to shift it when stopped without it. None of the production electric cars have a multi-speed transmission. Why is that, I wonder? __________________ Sincerely, Neil http://neilblanchard.blogspot.com/ Last edited by NeilBlanchard; 01-27-2012 at 11:26 PM..