View Single Post
Old 12-26-2007, 04:16 PM   #514 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,239

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

MPGiata - '90 Mazda Miata
90 day: 52.07 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)
Thanks: 3,796
Thanked 6,656 Times in 3,448 Posts
Well, a bit of free time over the holiday, curiosity and a gift to myself (in the form of a free pass for some guilt-free, aimless motoring) = new data about the ForkenSwift...



Neither Ivan nor I have done anything other than sub/urban driving so far, so this afternoon I headed the other direction and drained most of a charge in one fell swoop on a stretch of road/highway with no stops/lights.

Speed limits were 50, 60 & 80 km/h in different sections. I was going faster than 2 of the 3 speed limits at various points in the drive, but I only broke the law in one speed zone (it's a puzzler!).

Notable observations:
  • New top speed (maintained, briefly, on flat road): 66 km/h (41 mph) - with gravity assisted acceleration part of the way there.
  • It seemed to take about 120A @ 44.8v, or 5.38 kW, to maintain 55 km/h on what appeared to me to be a level bit of road (though that's something which is notoriously hard to eyeball).
  • So then, for most of the drive, the pack was delivering over 120A.
  • Distance travelled: 18 km - that's the farthest the car has gone on a charge in winter driving (dry roads; temp around 0 C).
  • It's also the longest the pack & cabling has been subjected to sustained current of that magnitude. As soon as I got home I went around and touch tested all the major connections - they were all cool. Good sign.
Based on distance travelled & SOC of the batteries at the end of the drive, I think it was a pretty efficient run - maybe even better than the very careful sub/urban driving I've been doing - which also includes a lot of coasting.

Anyway, I'll know the answer to that question tomorrow morning when I check the kill-a-watt meter on the charger. Stay tuned...
__________________
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: Oops, I did it again! Bought another cheap, 3-cylinder Mirage. Mods in progress...
Ecodriving test: Manual vs. automatic transmission MPG showdown



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