rec.autos.simulators

Hi all,

A weird thing happens with my PDPI L4 and T2 wheel setup; when
steering to the right, I can see in the calibration screen that gas is
somewhat employed. The same for a left turn; some braking is visible.
Not too much (about 1/20th of the total range) but still, this is
ofcourse the thing that's stopping me from becoming a Graeme Nash ;-)
I use the axis swap box.

Has anybody had this behavior too?
It's strange because you would assume the 2 axis are electrically
separate.

Ruud van Gaal
MarketGraph / MachTech: http://www.racesimcentral.net/
Art: http://www.racesimcentral.net/

From what I've gathered about the PDPI card, it works best with low ohm
range pots, 50k ohm or less.   If you use a higher ohm pot, you can get the
results you are seeing.  There is an alternate way of setting the pots which
improves the performance of 100k pots, but I don't know if it will work on a
250k pot like thrustmaster uses.  If you want to read about this alternate
method, go to the tech page at http://www.thomas-superwheel.com.  The gist
of it is you want the pedal travel to use the minimum side of the
potentiometer's ohm range.

-David Thomas Jr.
Thomas Enterprises

I've seen this also. I saw this happen before I got my a TSW2 and a
PDPI L4. It also happened with my Thrustmaster Pro and AWE64 joystick
port.

I assume that because all axis use the same voltage source (+5VDC)
that there is a certain amount of voltage drop between the axis inputs
when the resistance changes as you turn the wheel/pedal.

I was hoping that the PDPI card was going to solve this but I haven't
seen a change since I installed the card. I'm not sure if this problem
is even worhty of attention but it I am curious.

Anyone have more info on this or have a solution?

-Gary