Roll Cages for classic open sports cars

	1960 semi-lightweight (i.e. not aluminium) E-type historic racer. Full rebuild by Pearsons Engineering with roll cage by ARRC. This car is one of the original E-type racers driven by Bruce McLaren and David Hobbs.
	Cage designed to fit within hardtop.
	General lay out showing bolt-in door bars. Front down tube is not an ideal shape but has to bend forward to allow driver access.
	Mounts for back braces in boot.
	Detail of mounts for main loop and front down tubes with door bars bolted in place.
	Main loop with bracket for door bar and ARRC identification plate.
	Roll bar fitted permanently to Jaguar XK150. Designed to fit unobtrusively inside original hood and allow it to be put up and down easily. Built to FIA specification for limited competition use.
	1970 Corvette built to Group 4 FIA specification for proposed race series
	Full cage designed to fit under hard top if required.
	Detail of mountings and brace to main loop joint.
	Cage under construction for a Lightweight E-type. Much of the middle and back of the car is aluminium so additional fabrication is necessary to ensure solid foundations for the cage. This picture shows the general layout of the main loop with back braces and centre support. This cage is made from 4130 chrome moly steel.
	Drivers side door bar with misaligned tube to allow easier access.
	Support for the main tube with sheet steel mount shaped to fit aluminium panels and spread the load.
	Support panels prior to fitting tubes showing how they follow the original panels and are located at "strong points" in the shell.
	On this mount for the back brace on the rear parcel shelf it was possible to make a matching support to fit inside the boot. All mounting plates were finally bonded and riveted into place after the cage had been fully welded,
	This E type cage is bolt-in rather than the welded cage at the top of the page. General layout is the same but back braces and diagonal go to parcel shelf rather than through it.
	Mounts for main loop are welded to shaped plates which in turn are bolted to plates welded to the floor.
	Supports under the parcel shelf transfer load to the chassis, once again plates are bolted to inserts added to the floor.
	MG Midget cage designed to fit within soft top and provide complete safety structure.
	Main loop fully braced back to wheel arches with diagonal and with shoulder height cross tube.
	Detail of floor mount and main loop, front bar and brace junction.
	AC Cobra Coupe for full competitive use.
	Drivers side with bolt-in door bar and head rest.
	Driver and passenger have identical protection with angled braces and seat belt mounts.
	A maze of tubes behind the passenger labelled to allow easy identification.

Date	23-Nov-2008
Pictures by	Andy and webmaster