ARRC Roll cages for modern GT cars

Roll Cages for modern GT cars

These cars do not have the separate chassis of the classic GTs so strong points in the monocoque need to be found and/or reinforced.

General work to refurbish original Ford GT40 chassis number 5. Specifically to install roll bar not present in original specification.

Original chassis plate

Part built Aston Martin Vantage cage. Leather interior trim left in place.
Masking tape used to mock up position of cross brace.

Back braces run to rear wheel arch.
Note sheet metal shield to protect interior during welding.

August 2004 project to provide a new cage for a Porsche 911 Carrera RSR. These pictures are taken during construction, not all tubes are fitted and not all welds are complete.

General layout with main loop, back bracing, forward tubes and door bars (not yet fitted)

View into the back with main loop, back braces, diagonal and cross tube to provide seat belt location.

Mounts for front tubes boxed onto sill.

Mounts for main loop and back braces.

Seat belt retaining loops and top join between front tube, main loop, back brace and diagonal. Sheet metal shield to protect head lining during welding.

Right side with door bar now fitted.

1984-85 ETC style TWR Jaguar XJS. Cage designed to be a hybrid of mid 80s and current design standards.

Passenger side cage with door bar and door loop extending down into foot well. Additional bracing to link down tube and door bar still to be added.

Main loop with cross brace and two back braces through bulkhead into boot area.

Detail of door bar let into B pillar and box section built up in foot well.

Although the standard Mclaren F1 is a three seat car the GTR variant for racing retains only the central driver's seat. The standard roll cage uses part of the space normally allowed for passengers. The current owner of this car wanted to be able to carry passengers occasionally and to be able to race. The right hand seat space is taken up with electronics which could not easily be moved so ARRC were tasked with designing a new cage which would allow for passengers in one form and revert to racing layout in the other.

This picture taken part way through the build shows the "passenger" version with the upright bar absent and a wider spaced back brace to allow for the passenger head and shoulders. The racing variant looks more like the other side with a straight back brace and an upright. Changeover involves undoing a few bolts, swapping tubes and replacing the bolts.
The front bars from the main loop forward and then down by the a-pillars are not fitted in this picture.

Details of the mountings which bolt into inserts in the carbon fibre tub.

Date 05-Jul-2007

Pictures by Webmaster

	General work to refurbish original Ford GT40 chassis number 5. Specifically to install roll bar not present in original specification.
	Original chassis plate
	Part built Aston Martin Vantage cage. Leather interior trim left in place. Masking tape used to mock up position of cross brace.
	Back braces run to rear wheel arch. Note sheet metal shield to protect interior during welding.
	August 2004 project to provide a new cage for a Porsche 911 Carrera RSR. These pictures are taken during construction, not all tubes are fitted and not all welds are complete.
	General layout with main loop, back bracing, forward tubes and door bars (not yet fitted)
	View into the back with main loop, back braces, diagonal and cross tube to provide seat belt location.
	Mounts for front tubes boxed onto sill.
	Mounts for main loop and back braces.
	Seat belt retaining loops and top join between front tube, main loop, back brace and diagonal. Sheet metal shield to protect head lining during welding.
	Right side with door bar now fitted.
	1984-85 ETC style TWR Jaguar XJS. Cage designed to be a hybrid of mid 80s and current design standards.
	Passenger side cage with door bar and door loop extending down into foot well. Additional bracing to link down tube and door bar still to be added.
	Main loop with cross brace and two back braces through bulkhead into boot area.
	Detail of door bar let into B pillar and box section built up in foot well.
	Although the standard Mclaren F1 is a three seat car the GTR variant for racing retains only the central driver's seat. The standard roll cage uses part of the space normally allowed for passengers. The current owner of this car wanted to be able to carry passengers occasionally and to be able to race. The right hand seat space is taken up with electronics which could not easily be moved so ARRC were tasked with designing a new cage which would allow for passengers in one form and revert to racing layout in the other.
	This picture taken part way through the build shows the "passenger" version with the upright bar absent and a wider spaced back brace to allow for the passenger head and shoulders. The racing variant looks more like the other side with a straight back brace and an upright. Changeover involves undoing a few bolts, swapping tubes and replacing the bolts. The front bars from the main loop forward and then down by the a-pillars are not fitted in this picture.
	Details of the mountings which bolt into inserts in the carbon fibre tub.