View Single Post
Old 11-27-2007, 12:58 PM   #305 (permalink)
Batman Junior
MetroMPG's Avatar
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,210

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.8 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,973
Thanked 5,828 Times in 3,024 Posts
Someone points out that driving and EV efficiently must be very different from an ICE...

You're right - it is a totally different ball game, and there's no EV driver's website where I can go talk about the best techniques for driving the thing.

It was in 2nd gear for the speed run. I've read that electric motors are more efficient in the neighbourhood of 3k RPM, and that's roughly where it would have been at that speed. But... low RPM gives more torque, so maybe I should have shifted. Dunno. Don't have enough juice yet to do repeated runs

I may have even read somewhere that you UPshift an electric car for hill climbing (if your controller and pack can deliver the extra juice required to make the torque).

For regen, the electronic motor controller has to be designed to do it. The two that we have don't have that option. Still, it's better to coast where possible, rather than regen (unless you HAVE to brake). The 5 k neighbourhood run I did on the weekend was with lots of coasting to stops with the gear selector popped into neutral - almost no brake use.
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L

has launched a forum for the efficient new Mitsubishi Mirage - fuel efficiency info for Geo Metro owners - electric car conversion on a beer budget
  Reply With Quote