View Single Post
Old 11-26-2007, 10:40 AM   #208 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,785

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

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 58.31 mpg (US)
Thanks: 2,638
Thanked 5,544 Times in 2,845 Posts
01-01-2007, 10:01 Pm

Man, my tinker time this weekend was fruitless and frustrating.

Couldn't get EITHER controller to work (had another suggestion on the Curtis that I hadn't tried last week so I was back at it today).

Also, I learned in my reasearch that the GE EV-1 controller that came with the forklift isn't really well suited to small battery packs such as in a converted car (even "regular" size packs, not the 6 or 8 batts I'll be using).

The EV-1 has no capacitors on the input side, and it switches at a fairly low rate (around 300 hz), which means that you get the equivalent of "water hammer" in the current coming from a small battery pack.

The result: the EV-1 controller will both shorten battery lifespan and lower range per charge compared to a modern controller. You can retrofit a string of capacitors to improve it, apparently, so that may be something to look at.

None of that matters if I can't get the durn thing to work in the first place. I'm relying on the wisdom of the EVDL to help. I'm sure it'll get sorted out eventually.
__________________
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



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