Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - SIM-LEI aero EV achieves 84Wh/km @ 100kph

NeilBlanchard · 12-29-2011, 03:15 PM

I agree the earlier concepts were better looking -- and I'm sure the working prototype could be a lot better looking with a skilled designer; like for example Jason Hill.

The Cd could be further improved with smooth wheels and a few other changes, I'm sure. This car seems to fit with a theory of mine that the energy consumption overall more closely tracks the Cd and overall drag (CdA) than weight. The Edison2 VLCe got about 108Wh/mile (at ~45MPH average) and it's Cd is 0.161. This car got ~134Wh/mile (at ~55MPH) with a Cd of 0.19. I think the in hub motors of the SIM-LEI are more efficient than the DC drive used on the Edison2 VLCe; so it is hard to make a direct and exact comparison.

I also like the combination optical / video mirrors -- this is the best of both worlds, I think. The rear view screen is HUGE!

12-29-2011, 03:15 PM	#23 (permalink)
NeilBlanchard Master EcoModder Join Date: May 2008 Location: Maynard, MA Eaarth Posts: 7,908 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 2,951 Times in 1,845 Posts	I agree the earlier concepts were better looking -- and I'm sure the working prototype could be a lot better looking with a skilled designer; like for example Jason Hill. The Cd could be further improved with smooth wheels and a few other changes, I'm sure. This car seems to fit with a theory of mine that the energy consumption overall more closely tracks the Cd and overall drag (CdA) than weight. The Edison2 VLCe got about 108Wh/mile (at ~45MPH average) and it's Cd is 0.161. This car got ~134Wh/mile (at ~55MPH) with a Cd of 0.19. I think the in hub motors of the SIM-LEI are more efficient than the DC drive used on the Edison2 VLCe; so it is hard to make a direct and exact comparison. I also like the combination optical / video mirrors -- this is the best of both worlds, I think. The rear view screen is HUGE! __________________ Sincerely, Neil http://neilblanchard.blogspot.com/ Last edited by NeilBlanchard; 12-29-2011 at 03:39 PM..