[ausev] extraneous parts

[kenscircus at aol.com]

Shifting can help keep the current draw lower during an up hill climb.  It can also provide higher gear ratios for highway speeds.  Since electric motors do not have to idle and their torque curve is much flatter, less shifting is necessary.  It's just a good thing if available.
I have not heard of any thrust load failures due to clutch usage.  A good source for that question would be Jim Hustead at: http://hitorqueelectric.com/
 
Ken
 
 
-----Original Message-----
From: tntking at sbcglobal.net
To: ausev at austinev.org
Sent: Fri, 2 Mar 2007 10:47 AM
Subject: [ausev] extraneous parts


I've read that most EVs are typically kept in 2nd or 3rd gear all the time except when reversing. Has this been your experience or is it helpful to "downshift" in order to negociate a hill?
In an I.C.E. situation the flywheel is attached to the crankshaft. The action of depressing the clutch pedal puts pressure on the throwout bearing which put pressure on the pressure plate fingers. The force placed on the pressure plate ultimately places force onto the flywheel, which is located by the crankshaft's thrust bearings.OK, enough of clutch 101. Are undo forces also placed on the electric motor's shaft because the forces applied in using the clutch in an EV are now applied to the armature. Has premature wear ever happened to armature bearings due to  these thrust loads?
My goal is to lighten the car as much as possible.
_______________________________________________
AusEV mailing list
AusEV at austinev.org
http://www.austinev.org/mailman/listinfo/ausev
________________________________________________________________________
AOL now offers free email to everyone.  Find out more about what's free from AOL at AOL.com.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.austinev.org/pipermail/ausev/attachments/20070302/0daf93c1/attachment.html