By turning the gooseneck handle clockwise the brake shoes are applied to the wheels.
This form of braking applied the brakes to the track, rather than the wheels.
In "4-All Time", torque is applied to the rear wheels under normal driving conditions.
In order to apply any traction to the wheels some slippage of the wheel is required.
Another reason to add a lever to the mousetrap bar is to reduce the amount of torque applied to the wheels.
To apply the maximum torque to the wheels for climbing a grade or to become un-stuck, you should always use the 1st gear position.
It's these imperfections that apply forces to the wheels.
The efficient handle allows users to easily apply force to the wheels using either foot pressure or body weight.
The more weight applied to the driving wheels, the greater the locomotive's ability to haul a load.
Toyota have elected to apply the extra power to the rear wheels.