https://www.amazon.com/shop/madeinpoland - some tools and equipment we use
https://s.click.aliexpress.com/e/_DDe... - Similar motor i used
The drive is made of worm gear motors that come from an old broken wheelchair.
The motors have 150 watts each and, thanks to the additional chain transmission, they have a lot of power.
The reduction is quite large because the sprockets have 10 and 43 teeth.
Most of the frame is made of 3 and 4 mm wall materials, so it is very solid.
I connected the batteries so that the voltage was 24v.