The overall steering ratio is a very fast 13.5:1 and only 2 1/4 turns of the steering wheel are required from lock-to-lock.
If a truck had a low steering ratio, it would be very hard to turn the steering wheel.
The cable control gave it a quick steering ratio.
It was based on a cam and peg system and was characterised by its fully integrated design and variable steering ratio.
Power steering was standard equipment, with an overall steering ratio of 20.5:1, giving 3.5 turns lock-to-lock.
The system is intended to offer two principal benefits; a variable steering ratio and stability enhancing corrective steering actions.
The variable steering ratio remains active.
Marles Varamatic is the trademark name of an automotive power steering system of the 1960s and 70s, which was characterised by its variable steering ratio.
The steering box contains an "hour glass" cam machined with a varying helix angle to provide the variable steering ratio.
The varying pitch of the cam results in the variable steering ratio, with the lowest gearing being at the straight ahead, rising rapidly to either lock.