View Single Post
Old 05-04-2010, 09:51 AM   #6 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,391

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)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)
Thanks: 3,166
Thanked 6,020 Times in 3,121 Posts
And here's option 1 of the two e-motors on hand:



This is the permanent magnet power steering pump motor from the forklift.

5.5 inches diameter, 11 in. long, 32 lbs.

It's only rated .88 hp, continuous duty at 48v.

Consider: the ICE is rated 15 hp, peak. But for perspective, the vast majority of the time I run the engine, I'm basically putting around at 1/4 throttle, just to get in and out of harbours/docks/anchorages. Probably using about 3 hp.


Of course, we all know electric motors can be run at outputs well above their ratings, provided you don't melt them. Since the motor won't be used in the boat for extended periods, I'm thinking a small one may be OK.

Option 2 is the twin / "backup" motor to the one in the ForkenSwift, though it's actually overkill in terms of power and weight (8 in. diameter, 15 (?) in. long, 110 lbs).



It's a bit of a Goldilocks situation: the ideal motor, the one that's juuuuuuuust right, is probably somewhere in between these two.

Maybe I'll drop by the forklift place and see if the guys have something else on hand that's surplus/headed to the scrap yard.
Attached Thumbnails
Click image for larger version

Name:	motor-p-steering.jpg
Views:	1483
Size:	110.0 KB
ID:	6019  
__________________
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