Re: (ET) speeds

["Tim" <rimmer59 hbci com>]

I too can vouch for their (4QD) high efficiency and ruggedness.  I have
close to 500 miles on my electric bike and after climbing a 1 mile long 10%
grade hill @6.5mph the small heatsink is slightly warm.
----- Original Message -----
From: "Bob Murcek" <rmurcek geisinger edu>
To: <jbc coate org>; <elec-trak cosmos phy tufts edu>
Sent: Tuesday, July 30, 2002 1:10 PM
Subject: Re: (ET) speeds


> Jim,
> I used a 4QD (www.4qd.co.uk ) "Scoota 120" controller.  I have to add a
disclaimer: I have no idea how this controller would hold up under serious
use, i.e., lawn mowing.  My kids just use the tractor as a
(highly-supervised) riding toy.  I must say, though, that even an hour of
running around in my sloping backyard there isn't the slightest feeling of
warmth in the controller.
>
>
> >>> Jim Coate <jbc coate org> 7/30/2002 3:33:06 PM >>>
>
> What type of solid-state controller are you using (make, model, etc.)?
> Or did you make the controller yourself? And my apologies if this is a
repeat.
>
>
> Bob Murcek wrote:
> > I have a resistor per switch, but these are tiny (1/2 watt) resistors
that
> > just make the speed control lever into a clunky potentiometer that 
> > sends
a
> > control voltage to the solid-state controller.  The only high-power
> > components now are a circuit breaker on the batteries, the controller,
and
> > the motor.
>
>
> _________
> Jim Coate
> 1992 Chevy S10
> 1970's Elec-Trak
> http://www.eeevee.com
>