[ausev] jeep ev without tranny?
ben_d_jarrett at yahoo.com
Thu Mar 24 19:55:02 GMT 2011
What rpm is the motor at at 30 mph? 72V seems pretty low. This is very
From: Marc Kohler <mkohler at austin.rr.com>
To: AustinEV News Announcements and General Discussion <ausev at austinev.org>
Sent: Thu, March 24, 2011 1:48:32 PM
Subject: Re: [ausev] jeep ev without tranny?
I’ve hooked up a 9” Netgain DC motor with 72V/1200A controller directly to the
rear driveshaft on a 2008 GMC 1500 (½ ton) truck. Very slow and low top speed
From:ausev-bounces at austinev.org [mailto:ausev-bounces at austinev.org] On Behalf Of
Sent: Thursday, March 24, 2011 1:40 PM
To: ausev at austinev.org
Subject: [ausev] jeep ev without tranny?
As I've been working on my differentials, I got to thinking about
what it would take to run my ev cj7 w/out a tranny or transfercase
(2 save weight and simplify).
I was thinking about running a larger dual shaft ev motor.
4.88 axle ratio
with these numbers, I'd be at 3742 RPM's for 65 mph.
I would hook up yokes directly to the motor shafts. I would only hook
up the front driveshaft to the front yoke when I actually need 4wd, otherwise
only the output yoke would be attached.
I'm not planning on running lithium batteries for weight savings.
One thing I'm trying to figure out is if I can get a strong enough ac motor.
I may go w/ a large reversable dc motor if necessary.
I'm trying to figure out if I ran this config, could I get out of my own way...
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