Question 2DOF + Traction Loss Balance Issues

Hi to everyone! After several weeks of my last post, I'm just about to complete my project. I purchased a SimTools Gold license (I think it more that I needed) and the Plugin's for F1-'22 and No limits 2 Roller Coaster. With exception of No limits, I have no issues with all the set up process. I mounted all the electronic components into a panel and added some connectors so I can easily dismount everything and move it as required. Here is a picture of the panel.



The way I designed the rig consist of a "chassis" were the motors and the universal joint are attached and over it is another structure where the sit, wheel and pedals are mounted. Here is a picture of the motors and the chassis when I was doing electrical testing:


After successful tests, I decided to mount everything, and the result was a complete fail. There was a massive weight in the front and the motors where just unable to move:


In order to try to balance the structure, I removed the display support and started over in SMC3 software to do the tunning again of the whole rig, including myself seated. The result is the same, too much weight in the front and the motors are unable to move as expected. Here is a picture of the rig, I had to put one some straps to prevent to move forward.

On the workshop, while welding all the parts it supposed we found the center point and put it there the universal joint. I'm thinking on drop the "tilted" position of the seat and pedals (I tried to emulate a formula car position) so the balance can be controlled more easily and move to something similar to a GT car. The motors that I'm using are from a wheelchair, 360W with no break. Each motor has a dedicated 360W 24VDC power supply.

I think the problem is on the balance, I can feel the ring unstable since I'm seating in. Should I add breaks to the motors? Do you recommend adding counterweight? The rig is really heavy, the stainless steel used is strong, change the material of the whole structure will cost a lot.

What are your thoughts guys?

Thanks for the support.

Thanks for the comment noorbeast, I will balance again the rig. Do you have any other recommendation? You think the motors selected are ok?

The motors does not have any label on it, but based on what I saw on the net they are 32:1.

It is 55mm, is the minimum to clear the pulley as the joint is moving above of it. I can reduce that distance doing small changes to have the joint in front of the pulley.

Thanks for the support, I think with 2 weeks I will tell you who is it going.