Variable speed

["Marc en Wendy" <marcmethorst-at-zonnet.nl>]

Joe,

My T028 has variable speed as it uses a complete wheelchair drive system,
transferred to the tank. It contains a 'black box' with all sorts of
interesting prints, that I know absolutely nothing about.
At the joystick control panel there are two potentiometers, one for
sensitivity of the joystick and one for max. motor speed. I can control the
motor speed using the joystick. So, pushing the joystick halfway it does
half speed, fully engaging the joystock is full speed. Full speed in this
case would be about 6 km/h or just under 4 mph. Fast enough for a 100 kg
vehicle, controlled by a child.
If anyone knows his way around electronics and prints and stuff I would
suggest that one of these drive systems can be hooked to an R/C system. The
advantage would be that all allready components match.
Another thing about wheelchair drive systems is that the motors haven
solenoid brakes. So with the joystick in neutral position, or even the
electric system switched of, the brakes engage. You can tell by the photo on
my site showing the tank in a fix position up the ramps.

I will send you the rest of the tank data shortly.

Regards,

Marc


----- Original Message ----- 
From: "Joe Sommer" <anvilus9-at-adelphia.net>
To: <tanks-at-rctankcombat.com>
Sent: Sunday, October 10, 2004 2:32 AM
Subject: Re: correct terminology ?


>
> Steve,
>
> At 08:00 PM 10/9/2004 -0400, Steve Edwards <sedwards-at-awger.net> wrote:
> >>... Our tanks have joystick mixing to steer
> >>but only control motors forward, off or reverse.
> >
> >I thought your Hetzer had proportional steering?
>
> It does have variable speed mixing.
> I did not wish to confuse the issue.
>
> The only operational hulls that may have variable speed are
> Hetzer #T010 - home-made controller
> Tiger #T014 - unknown controller
> Tiger #T021 - Vantec controller
> T-34 #T024 - servos pushing drill switches
> Leo #T028 - unknown controller
>
> My home-made controller uses H-bridges so
> with the old 12 VDC Makita motors, a track could
> free-wheel if that motor was off.  However, the new 24
> VDC Makita cannot be back-driven and tracks now
> lock when their respective motors are off.
>
> >Hmm... what happens if you insult the MAG *before* you build a tank?
>
> They force you to eat large quantities of
> oatmeal (a Coxsackie joke).
>
> Joe
>
>
> **********************************************
> Joe Sommer
> 2378 Nantucket Circle, State College, PA 16803
> 814.234.4773     anvilus9-at-adelphia.net
> http://www.anvilus.com
>