Re: FW: (ET) Electric Chipper/Shredder?

["" <thumphrey mynra com>]

Remember when you wire your motor.....

Put twelve volts to the Armature and take note of the direction the motor 
turns, it should be counterclockwise. This tells you what direction the 
internal series field is wired for.

Now hook up the shunt field in parallel with the armature, still on 12 
volts, it should turn in the same direction, if it doesnt, switch the 
field wires.

The field wires connector on my motor is the same as on a computer power 
supply twelve volt buss, if you don't have any junk computer power 
supplies laying around, let me know, I'll send you a connector with 
pigtails.

Stay Charged!
Hump
Rome, NY
I-5, Mower,Thrower,Chainsaw,Bandsaw,Blade.


> 
> 
> -----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: Wednesday, September 15, 2004 8:33 AM
> To: 'Markus Lorch'; Klein Robert W NPRI; elec-trak cosmos phy tufts edu
> Subject: RE: (ET) Electric Chipper/Shredder?
> 
> 
> Instead of a contactor, I was going to use the existing belt tension 
> pulley
> engage mechanism.  It's right at the unit and tightens/loosens the drive
> belt between the motor and the chipper/shredder.  I would use the tractor
> PTO on/off switch to engage the motor and the tension lever to
> engage/disengage the unit.  Simple and lowtech.  Guess I'll have to take
> pics and post on the elec-trac site.
> 
> Bob
> 
> -----Original Message-----
> From: Markus Lorch [mailto:mlorch vt edu] 
> Sent: Wednesday, September 15, 2004 8:19 AM
> To: 'Klein Robert W NPRI'; elec-trak cosmos phy tufts edu
> Subject: RE: (ET) Electric Chipper/Shredder?
> 
> 
> 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
> > 
> > _______________________________________________
> > Elec-trak mailing list
> > Elec-trak cosmos phy tufts edu 
> > https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
> > 
> 
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