[EVDL List]

Mark,
I think this motor went into a Honda
that needs the motor to run in the opposite
direction, so the connection between field
and armature was swapped to run it backwards.
This is why it ran retarded instead of advanced.


Cor van de Water
Director HW & Systems Architecture Group
Proxim Wireless Corporation http://www.proxim.com
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-----Original Message-----
From: xxx@xxx.xxx.edu [mailto:xxx@xxx.xxx.edu] On
Behalf Of Mark Hanson
Sent: Thursday, May 19, 2011 10:37 AM
To: xxx@xxx.xxx.edu
Subject: [EVDL] (no subject)


Hi Mike etc,

Do you mean it fried when backing up or it was running retarded 10
degrees forward all the time? Inquiring minds would like to know. I'm
leaning towards running my new 9" "Impulse" from Warfield go-ev.com
neutral like my previous EV's at 120Vdc.

Best Regards,
mark

[quote]Mike wrote:

If anyone is interested, I have photos of the damage that can be caused
when running a motor set for 10 degrees advanced in reverse. This was an
Advanced DC FB1-4001A running at 144V. I had to replace all the brushes
and the brush holder. Most of the brush springs and major parts of the
brush holder were melted.

There is definitely lots of arcing that can happen when the brush timing
is wrong. This problem definitely becomes more pronounced as you run
higher voltage and higher current.

Mike

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