Question Sim rig balancing and design

Hi Guys

I've recently restarted work on my rig project after putting it on hold due to work commitments. I'm excited to dive back in and get it up and running smoothly.

I've built a 2 DOF sim rig using IBT2 motor controllers, 2 electric power steering units from a Toyota Yaris, 2 x10k potentiometers for feedback, and 2 x12V 40A power supplies. Specifically, I'm experiencing issues with the rig not being able to lift my weight (90kgs) smoothly. I'm wondering if there's something I can adjust or if there's a limitation with the current setup and if rig balance might also be an issue

I've attached some pictures of the rig, control box, and power supply. I'd love to get some feedback on whether it looks balanced and if there are any suggestions for improvement.

If anyone has experience with similar issues (particularly with eps motors) or can offer some guidance, I'd greatly appreciate it. I'm looking forward to hearing your thoughts and learning from your experiences.

Kind regards

Hi just wondering what your seat is pivoting on?
I can't see from photos but essentially the centre of gravity should be balanced to the mount

Hi Sam,

Thanks for the reply. The seat isn't permanently mounted on the rig yet. I just wanted to place it there to show where it will be and give you a better idea of the rig's overall setup. There is a small universal joint that holds the top frame of the rig. I hope you will find this helpful? I've also attached photos from a different angle as well.

Thanks

Ok that all seems good to me
I had a thought about those motors im not entirely sure of the internals of them but being car mechanic I know (at least on a hydraulic system) they are torque activated to assist steering rather than working full time
Maybe there is some kind of torque sensor interfering with the output that needs to be bypassed?
I could be completely wrong but just thought I'd mention it

Another simpler solution is have you tuned the pid correctly