Simple LEGO technic trial chassis 4x4 (free instruction)

This is a simple chassis in the 81 mm wheel scale.This chassis can be assembled by anyone, as it does not include rare parts. But you can also install 62.4mm and even 94 mm. The chassis has realistic proportions and positive castor . 2 liters of motor are used for the drive, 1 liter of motor is used for steering. As a power supply unit, you can use a small battery pack ,lipo or buwiz