Re: (ET) Lift motor control

[Anton and Federica <krustyacres earthlink net>]

That sounds like a good plan. It is possible that the controller is not 
linear, that is 1/2 "throttle" might not be 1/2 power. You could check 
that by hooking it up to 18v and then matching the speed of the motor 
with a similar load.
The advantage, I assume would be that you would be pulling a balanced 
load off all the batteries, instead of draining only half of them when 
you use the lift.
Also, be careful about the amperage rating, I have no idea what the amp 
draw of the lift motor is, but under a heavy load, it could be pretty high.
Anton

steves wrote:

> I think the idea would be to run the controller at no more than 1/2 
> 'power'.
> If it is a PWM controller then I would think running it at half throttle
> would provide an average 18V to the motor. I'm getting out of my area of
> knowledge here, though, so those better informed correct me if I'm wrong!
>
> If this idea is right then one could build a fixed controller that is 50%
> duty cycle - would be fairly simple.
>
> SteveS
> E20
>
> ----- Original Message ----- 
> From: "Dave & Debbie Barden" <daveb seanet com>
> To: <ralphgv centurytel net>; <>
> Sent: Tuesday, February 03, 2004 12:58 AM
> Subject: Re: (ET) Lift motor control
>
>
>  
>
> > the lift motor is only 18v.  I think I've seen warnings about shortening
> >    
> its
>  
>
> > life running it at higher voltage.  you might check the archives...
> >
> > dave
> > seattle
> >
> >    
> >
> > > Hi
> > > I was wondering if anyone has any thoughts on using this controller for
> > > running the lift motor on 36 volts?  It is rated for 20 amps at 36 volts
> > > and only $42.00 each.   Go to
> > > http://www.warehousesensations.net/x360_parts and scroll down to item #
> > > X360-220 (AKA) "The Brain".
> > >
> > > Ralph Vogan
> > > ralphgv centurytel net
> > >      
> > ralphgv centurytel net
> >
> >
> >
> >
> >
> > _______________________________________________
> > Elec-trak mailing list
> > Elec-trak cosmos phy tufts edu
> > https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
> >
> >
> >    
>
>
>
> _______________________________________________
> Elec-trak mailing list
> Elec-trak cosmos phy tufts edu
> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
>
>