On 9 Dec 2013 at 23:43, John Neiswanger wrote:

>  I have a customer who thinks it is great fun to throw the car in
> reverse rathar than use the hydraulic brakes. 

Ugh.  Sounds like someone who doesn't appreciate being expected to use an 
EV, and wants to wreck it any way he can.  :-(

Could you devise something that checks the motor rpm and/or road speed, and 
inhibits reversing the contactors unless it's zero?  

I'm no engineer, but maybe you could open the armature circuit and measure 
armature voltage.  Residual field should be enough to generate at least a 
little voltage unless the motor is stock-still, no?

David Roden - Akron, Ohio, USA
EVDL Administrator

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