Hello,
When testing the car I noticed that the curves slowed and the driving wheels skid slightly. To fix I decided to make a differential.
I changed the tractor to the rear axle and the front direction.
I did the front axle swing arm to better fit the ground.
Now it works much better.
This video shows the construction of differential and tests:
Video 7
My tools are slim, I have only an electric drill and hand tools.
My knowledge of mechanics were almost nil but my enthusiasm to get to an engine was big
Thank you for your attention and best regards