Jaguar car roll cages, XK150, E-type, Mk 2, Mk 7, C-type, Proteus C-type
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.
Seen in the collecting area for the Daily Express Trophy race for Production Jaguar Cars... Jaguar XK150 roll cage.
... at Silverstone Classsic. Jaguar XK150 roll cage.
Jaguar C-type with bespoke cage. This car does not require a cage to compete however the driver wanted some more protection so this 3 point cage was developed to be unobtrusive but effective.
The seat back loop also has harness mounts built in. Jaguar C-type roll cage.
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. Jaguar XJS roll cage.
Main loop with cross brace and two back braces through bulkhead into boot area. Jaguar XJS roll cage.
Detail of door bar let into B pillar and box section built up in foot well. Jaguar XJS roll cage.
Genuine lightweight E-type rescued from a museum and returned to the track. Jaguar E-type roll cage.
Cage under construction for a the 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. Jaguar E-type roll cage.
Support panels prior to fitting tubes showing how they follow the original panels and are located at "strong points" in the shell. Jaguar E-type roll cage.
Support for the main tube with sheet steel mount shaped to fit aluminium panels and spread the load. Jaguar E-type roll cage.
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, Jaguar E-type roll cage.
Drivers side door bar with misaligned tube to allow easier access. Jaguar E-type roll cage.
First time out - Goodwood Revival. Jaguar E-type roll cage.
This E type cage is bolt-in rather than the more usual welded. General layout is the same but back braces and diagonal go to parcel shelf rather than through it.
Jaguar E-type roll cageMounts for main loop are welded to shaped plates which in turn are bolted to plates welded to the floor. Jaguar E-type roll cage.
Supports under the parcel shelf transfer load to the chassis, once again plates are bolted to inserts added to the floor. Jaguar E-type roll cage.
Mk2 Jaguar saloon requiring a race spec.and fully bolt-in cage.
Assembled cage fully welded but not yet installed. This design allows for two alternate back stays. Version A leaves room for rear seat passengers, version B is normal race spec. Both pickup on the same body mounts. Jaguar Mk2 roll cage.
Jaguar Mk2 roll cageWide angle view from the top of the gearbox tunnel shows the cage installed with race back stay, B, resting a little below its' installation position. Jaguar Mk2 roll cage.
The sills were reinforced by the A pillar and B pillar using mounting plates with captive nuts. Shown in situ in the left picture and with the cage mounted on the right. A similar flat plate was fitted to the top of the back wheel arch to take the back stay. Jaguar Mk2 roll cage.
Mark 7 Jaguar saloon being prepared for circuit racing with a full bolt-in cage.
Pictures taken during final installation. This "passenger foot well" shows the main loop with back stays, single triangulation tube and a cross tube for seat belt attachment. Jaguar Mk7 roll cage.
The view from the back shows the front tubes and screen tube. Jaguar Mk7 roll cage.
This dash tube is lower than usual to miss the standard dash board and its' mounts. Jaguar Mk7 roll cage.
And from another angle to show bolt-in brackets on the dash bar and single door bar. Jaguar Mk7 roll cage.
Mk 2 saloon delivered as a bare shell with existing cage to be replaced with new bolt-in.
"Gear-lever" view shows main loop with back stays and diagonal. This cage also fitted with single door bars. Jaguar Mk2 roll cage.
"Parcel shelf" view shows front tubes and screen tube. Sills have plates added as above to provide a solid foundation for the cage. Jaguar Mk2 roll cage.
Detail of back stay mount based on additional plate welded to wheel arch. Right hand detail shows how back stay and front tube attach to the main loop. Jaguar Mk2 roll cage.
Jaguar C-type replica with fibreglass body, tubular chassis and Jaguar running gear.
Part built cage showing main loop with individual driver and passenger loops based on existing plates included in the chassis. Jaguar C-type replica roll cage.
Fully finished cage showing head rests, seat belt locators and T-bar linking individual loops with front brace into passenger foot well. Jaguar C-type replica roll cage.
Hidden attachment of T-bar to dual loops and base of front brace also using pre-existing mount. Jaguar C-type replica roll cage.
In 2011 the FIA introduced new regulations for roll cages to be used in Appendix K racing cars. These required the constructor to demonstrate minimum movement of the cage given a specific force and load point.ARRC used its in-house Ironcad system to design a cage and an FEA consultancy to confirm its' characteristics. The opportunity was taken to confirm that the cage also met the different MSA specs. This picture gives a visual representation of the loads in the cage at maximum force.ARRC were the first to gain approval for a cage for the E-type Jaguar. Reference numbers are MSA National approval UK/11/0027 and MSA/FIA Appendix K HIST/0003.There is also an approved variant which has a single roof brace instead of an X to allow for taller drivers.
As can be seen in this picture the narrow cabin and low roof line imposed some additional constraints... Jaguar E-type FIA roll cage.
... and the shape of the door opening made design of the A-pillar tube less than ideal. Jaguar E-type FIA roll cage.
This picture of the left hand side of the main loop emphasises the complexity of the cage and shows a couple of the additional corner braces needed to meet the demanded standard. Jaguar E-type FIA roll cage.
This footwell picture shows how little space is available for the cage within the hard top. Jaguar E-type FIA roll cage.
Unfortunately the third customer who wanted an FIA cage was tall enough that his crash helmet touched the roof X. To overcome this problem a variation was designed which used only a single cross brace in the top of the cage. Once again FEA simulation was used to confirm that the cage conformed to regulations. Jaguar E-type FIA roll cage.
1960 semi-lightweight (i.e. not aluminium) E-type historic racer.This car is one of the original E-type racers driven by Bruce McLaren and David Hobbs. Jaguar E-type roll cage.
Cage designed to fit within hardtop. Jaguar E-type roll cage.
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. Jaguar E-type roll cage.
Mounts for back braces in boot. Jaguar E-type roll cage.
Detail of mounts for main loop and front down tubes with door bars bolted in place. Jaguar E-type roll cage.
Main loop with bracket for door bar and ARRC identification plate. Jaguar E-type roll cage.
Low drag E-type replica with hand made aluminium body on original E-type chassis. Requirement was for a bolt-in cage.
Main loop rolled to gentle curve to match body. Jaguar Low-drag E-type roll cage.
Front tube down into base of A-pillar. Jaguar Low-drag E-type roll cage.
Above and below rear parcel shelf view shows how the cage rear stays are tied down to chassis underneath the boot floor. Jaguar Low-drag E-type roll cage.
Detail of unfinished A-pillar mount. Large steel spreader plate is welded to the foot of the cage. Another aluminium plate, here covered in engineer's blue, is riveted into place on the body to further spread the load into the body structure. Jaguar Low-drag E-type roll cage.
In use at Silverstone Classic 2016. Jaguar Low-drag E-type roll cage.
In use at Silverstone Classic 2016. Jaguar Low-drag E-type roll cage.
Proteus C-type replica bolt in roll cage.
General layout with main loop, back stays, diagonal and seat belt tube. Proteus C-type replica bolt in roll cage.
Base of main loop with additional supports welded to main chassis tubes. Proteus C-type replica bolt in roll cage.
And from above showing seat belt loops on cross tube. Proteus C-type replica bolt in roll cage.
Detail of back stays joining main loop. Proteus C-type replica bolt in roll cage.
Standard ARRC roll cage plate as fitted to all cages. Proteus C-type replica bolt in roll cage.