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Re: (ET) tractor parts



Nothing terrible , IF YOU ARE CAREFUL . That is the configuration that my CA model E-20 has been living with for fifteen or so years now. BUT........all the current limiting features that the Elec-Trak engineers provided will now be null and void .Without the control card functioning, you will be able to access field weakening at a much higher motor load , {and therefore lower armature RPM.} than the design had anticipated . If you are not alert , you can make big , expensive smoke . The only protection you will have against meltdown are the large Klixon® limiter on the motor housing, and the thermal switch in the field windings. Should you mash the throttle too quickly, or hold it past the fourth speed position to far for too long, you WILL overtemp the armature, possibly faster that the Klixon® can react, especially at the beginning of a snow throwing expedition . The symptoms you are describing seem to point to deeper issues . You would do well to fully assess all the components that are behaving badly. It will be cheaper in the long run , and will preserve many difficult to replace parts .

----- Original Message ----- From: "Chris Zach" <czach computer org>
To: "Elec-trak list" <elec-trak cosmos phy tufts edu>
Sent: Sunday, September 12, 2004 5:07 PM
Subject: (ET) tractor parts


Well, today I was driving my E20 around on the street and managed to trip the motor temp breaker. Or something; the tractor stopped dead and didn't move for about 5 minutes.

I noticed that my disconnect is getting rather hot on one of it's connections; think I will replace it with the evparts.com one. Also getting a new volt meter (the two I bought from Ebay were *BOTH* bad) and a single contactor since one of mine (3A, the top resostor bypass) was getting hot as well.

Still, nothing compares to that shunt plate in the center. It is extremely hot after running the motor hard; what kind of bad things might happen if I just jumped around it with some 2/0 cable?

Reason I am concerned about power is that winter's coming. Winter means cold which means snowblower, which means I need *full* power in both forward and reverse.

Fun fun.

Chris


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