RE: (ET) Electric Chipper/Shredder?

["Markus Lorch" <mlorch vt edu>]

Bob,

(assuming its the same motor as the E20 has)

I think that should work just fine. You would put the field in 
parallel to the armature. I would keep the large klixon breaker
to interrupt power to the armature and field in case of an 
overload. Maybe you would want to also hook up a large 
contactor (like the PTO contactor) that could interrupt the
power. It would be triggered by an emergency stop switch mounted
directly on the chipper and by the motor internal temperature 
switch (there are 4 small wires coming out of the motor,
two are the field, the other two are the temp. safety switch)

Without this emergency-off button it may be too dangerous to 
operate the chipper a few feet away from the tractor as you
would be unable to turn it off from where you operate/feed
the chipper. Further more if you have a heavy duty resistor 
laying around the contactor could break the motor by directing
induced armature current through the resistor. (you could also
short the armature but I think that would chew up the contactor
rather quickly). 

Markus



> -----Original Message-----
> From: elec-trak-bounces cosmos phy tufts edu 
> [mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of 
> Klein Robert W NPRI
> Sent: Mittwoch, 15. September 2004 08:08
> To: 'elec-trak cosmos phy tufts edu'
> Subject: (ET) Electric Chipper/Shredder?
> 
> 
> I recently picked up a ROTO HOE Mdl 500 chipper/shredder.  
> Originally came with a 5hp to 12hp IC engine.  Thins one was 
> engine less as it used the power takeoff pulley from the guys 
> tractor.   Anyway, I have a NOS E-20 drive motor sitting on 
> my shelf and wanted to hear what everyone thought about 
> converting it to electric.  Is it as simple as some mounting 
> bolts and the appropriately sized pulley?  Then I could just 
> plug it into the mower deck/snowblower plug and go to town!
> 
> Bob Klein
> Wheelhorse C-185 
> 
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