[ausev] Scott's Conversion

[Roy Holder]

At 10:08 AM 9/11/2007 -0500, you wrote:
>Hello,
>
>I was told by KTA Services that the 1231C-7701 would provide better off
>the line response due to it's 550A cap. (+10%) vs. the 1231C-8601 and
>therefore wanted to use the 7701.
>
>I intend to install the controller on a piece of heat sink and to cool
>the controller via a fan/duct.  
>
>Did you have a similar design/setup with your failed unit? 

yes.  heat sink and a fan.  

The max amps the motor will recieve is more dependent on the overall design
of the whole system than the rating of the controller.

I have run the Geo at 96, 108 and 120v, for at least a few months at each
voltage.  Each time I increased the voltage I liked the performance better.
Having the option to increase your voltage to 144 is something you should
consider.

off the line response is not at max amps in a curtis controller, there is a
throttle curve that controlls that.

Of you really want off the line response go with higher voltage.
The 120v maxes at 66kw and the 144v controller is 72kw.


 Do you know
>of anyone else with a similar experience? 

No, I think I am the only one in the group with the curtis controller.

>
>Thanks for the note!
>
>Scott  
>
>-----Original Message-----
>From: ausev-bounces at austinev.org [mailto:ausev-bounces at austinev.org] On
>Behalf Of Roy Holder
>Sent: Tuesday, September 11, 2007 9:54 AM
>To: AustinEV News Announcements and General Discussion
>Subject: Re: [ausev] Scott's Conversion
>
>If you do get a curtis controller, go with the 144v controller.
>I just replaced a 120 with a 144 and I like the 144 MUCH better.
>I think you would be pushing the 120 past its limits and it will
>overheat.
>the 144 did not overheat this summer like the 120 did in the past.
>
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