The front brakes were initially inboard, in line with its predecessors, but were moved outboard in a more conventional design part-way through the season.

The idea behind the new system was to set the suspension up for a specific track, taking into account ride height and road surface, and the 77 was dubbed 'The Adjustacar' as a result.

It was quickly deemed that this suspension arrangement wasn't suitable and Len Terry was brought in to design a more orthodox system with rocker arms and outboard brakes.

He moved the oil radiator to the nose to improve weight distribution and also added a cockpit-adjustable rear anti-roll bar and a lighter compressed-air starter.

All drivers reported the steering and ride were occasionally vague and unresponsive and that the car lacked straight-line speed.