Re: (ET) Red Hot Resistor

["Bob Murcek" <rmurcek geisinger edu>]

I'm not the best source for this info, but one place to look for a dead 
short is fat wires getting chewed by the motor pulley.  It looks like the 
previous owner of mine had trouble with that.

Also, from the recent discussion about how the motor is designed, I'm 
wondering if you'd see this behaviour if the shunt field of the motor 
wasn't getting power.  Check to see if the field wires got pulled off.

>>> "Christopher Zach" <czach computer org> 1/16/2002 7:03:43 PM >>>
Sounds like a dead short somewhere. I'm surprised that the fusable link
hasn't blown.

Then again maybe the resistor is functioning as a load (toaster) in some 
odd
way. Regardless, I think you have a problem. Somewhere along the line there
is another wire that is very warm. Or perhaps the motor is shorting out
somewhere.

Chris

----- Original Message -----
From: <habooly earthlink net>
To: "ELECTRAK" <elec-trak cosmos phy tufts edu>
Sent: Wednesday, January 16, 2002 5:55 PM
Subject: (ET) Red Hot Resistor


> My E12 was running fine and then stopped. Now, when I put it in forward 
> or
> reverse, the 'fuel gauge' goes all the way to the left and the 'power-use
> gauge' goes all the way to the right. Also, the metal strap which is
> located in front of the charger and looks like it is wrapped around a
> ceramic plate, gets red hot, in less than 10 seconds.
> The drive motor seems to be okay. Sometimes, it will turn when in forward
> or reverse.
> Any ideas or is this explanation too vague?
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