AC car roll cages, 1928 Saloon, Ace, Cobras, Aceca
A 1928 saloon which had been raced in southern Africa. Typical small section chassis and ash framed ally body.
So where to attach the cage and allow for a wooden floor? This is the base of the main loop which is supported by a L-shaped plate welded to the chassis with bolts through the floor ...
... and the chassis on the inside and a spreader plate underneath on the outside
Similarly with the base of the back stays ...
... although you can see the bolts through the chassis as well as those through the spreader plate.
General layout before the forward tubes were completed.
Straight view of the main loop, back stays and diagonal.
VVC Membership plate
Finished car at Brooklands. Picture courtesy of Brooklands Cars Ltd.
And the finished interior with mostly wooden floor. Picture courtesy of Brooklands Cars Ltd.
AC Ace which does not require a cage to race in the relevant category but whose driver wanted more protection. This is provided by installation of a fully removable cage.
Top view showing main loop, diagonal brace and door bar/forward brace arrangement. AC Ace roll cage.
Detail of removable door bar/forward brace. Right picture shows attachment through a solid insert in the main loop. The other shows the diagonal and door bar bolted to a new bracket attached to the original dash loop. AC Ace roll cage.
Main loop fitted to remains of original roll cage main loop. AC Ace roll cage
AC Cobra with hard top, full race cage installed which would still leave as much space in the cabin as possible.
Under construction with most tubes installed but not fully welded. AC Cobra roll cage.
Fully finished ready for fitting the hard top and then customer collection. AC Cobra roll cage.
Passenger foot well view showing tight fit to the hard top. AC Cobra roll cage.
Left picture shows front a-pillar tube goes through firewall to pick up the chassis alongside the engine. Right picture shows the back stay mount on the body frame. AC Cobra roll cage.
AC Cobra in the collecting area for the Gentlemen Drivers race at Silverstone Classic 2011.
Earlier in 2011 in the workshop with a partly complete cage showing the sill bars which will later be hidden. AC Cobra roll cage.
Interior in the collecting area showing added corner braces and door bars. AC Cobra roll cage.
AC Cobra Coupe for full competitive use
Drivers side with bolt-in door bar and head rest. AC Cobra roll cage.
Driver and passenger have identical protection with angled braces and seat belt mounts. AC Cobra roll cage.
A maze of tubes behind the passenger labelled to allow easy identification. AC Cobra roll cage.
AC Aceca, the requirement was for a fully bolt-in cage which would leave a standard interior for non-competition use.
Front a-pillar tubes angled and bent to clear dash board. Plates at each end of the screen tube allow for its' removal. AC Aceca roll cage
Main loop clear of wood framing in the roof. Plates at the end of the forward tubes allow for their removal. AC Aceca roll cage.
Back braces and diagonal to plates welded on the rear most chassis tube. Sleeve joints allow for removal of these parts of the cage. AC Aceca roll cage.