Showroom Starting a 2DOF + traction loss...need advice

Trying to get things dialed in. The traction loss doesn't seem as smooth as I think it should sometimes. There are times during quick transitions that the motion seems jerky. I am currently using a 100mm ctc on the traction loss side. I tried 150mm but it seems to be too much for the motor. It will move but it is slow and jerky. Maybe that is what I am feeling with 100mm ctc just to a smaller degree. Suggestions? These are 25:1 worm gear motors btw.

What is your Tuning center values for TL ?

5 and -5

err that's wrong. Way too narrow of window, Triple or quadruple that number and you'll start to get in the proper window.

AC's Skid pad is a proper plate to find your min/max. Tho it does require you to be able to hold a drift/maintain a drift and record min/max's and be aware of what the data is telling you.

I can guarantee you a proper Full TL moment, is a WAY bigger number than a 5.


Have you watched my TL video's ?

And yet another problem.....I think I may have an issue with my pots. Here are the pots I am using...http://www.alliedelec.com/bourns-6639s-1-103/70153381/

The problem is that the sim seems to lose positional feedback sometimes. When that happens the motors go crazy oscillating back and forth. I have to go back into the jrk utility and do the relearn procedure. Sometimes that works and other times it doesn't. When it doesn't work I have to remove the pot spin it a few times by hand, reinstall and start process over. The pots don't seem to have any mechanical stop in them, but there is a spot in the pots rotation where there seems to be a very slight amount of "roughness". Again this is very very slight and it is in all the pots. Help please.

Ideally you need to test the pots using a multimeter. Connect the meter across the pot with it disconnected from your rig and test the resistance as you very slowly turn it from one end of its travel to the other. The resistance should gradually increase (or decrease), check that it does not jump from high to low values.

The fact that you can feel some lumpiness suggests to me that it needs to be replaced. This is often caused by poor alignment and therefore excessively side loading the pot.

I think I figured out the issue. I never found the center of the pot. I thought since they didnt have stops i could just install them. I just found the center using the jrk utility and all seems fine now. Always the little things that get ya.

I had a pot that was Physically seized, required a Large set of pliers to break it free, and Guess what. To this day, That pot is Still Rockin like the clock dont stop.

Quality pots last a Long time even with some abuse thrown in.

Still trying to dial things in and have something I cant figure out in simtools. I drive a lot of high banked ovals in iracing. When the sim is setup for normal non banked road course driving and i am turning left the sim rolls to the right to simulate the cars body roll to the right. The problem is that when turning left on a high banked oval I want the sim to roll to the left to simulate the banking. I cant find an easy way to quickly switch this. The only way I have found is to manually go into axis assignments in simtools and reverse the axis for roll. Is there a way to make a preset to quickly make this switch?

Pictures of your Axis assignments please.

Pitch and roll are very much Track related, Not so much car related. So your "when i turn left the car rolls right" isn't the case, I can assume you are running all 5 forces (excluding TL for simplicity sake) So what your feeling on a flat Track when turning is not Roll but rather Sway.....did you take the time to play with each force individually ? Im inclined to say No.


Your complaint about Roll Vs Sway on the large banks is a legit one, Chat to some of the nascar/Iracing motion guys.

I think I found problem with the axis movements but I have no idea how to fix it. I had the roll backwards...easy fix...switched the checked boxes. However the sway axis doenst seem to work properly. When I test sway in the test outputs screen it moves the seat forward and back....not side to side. Essentially sway is working identically to surge and pitch. How do I fix that? I am on the latest sim tools build. I will post up pics of my axis assignments.

Here are the axis assignments

Sway needs the opposite Axis Reversed to Roll.

That did the trick. As soon as I read that I just face palmed myself. How do the rest of my axis assignments look, particularly the percentages?