Roll Cages for classic GT cars

 Problems often arise with these cars in finding a suitable way to attach the cage. There is little strength in the periphery of the body and the chassis may be much narrower. In these cases it may be necessary to make additional out riggers or sub fames to provide a secure mount for the cage.

	Typical installation of bespoke cage in Ferrari 250 short wheelbase. General view of driver's side. Front tubes pass through the top of the dash and then bend out slightly towards the side to be as close to the sills as possible.
	Back braces to main hoop pick up on rear shock absorber towers.
	General view of passenger side with diagonal and cross brace.
	Tubes mount to boxes tied into tubular chassis running through door sills.
	Different Ferrari, similar problems. Cage to FIA/MSA specs and removable. Wherever possible the cage is not seen from the outside.
	Cage bolts to sills as major strong point in tubular Ferrari chassis.
	Back braces pick up on strong point beneath rear window.
	Installation in TVR Grantura. Rear tubes braced to new sub-frame attached to original chassis.
	No suitable floor mounts so small mounting box fabricated which attaches to chassis under door sill
	Aston Martin DB2 with requirement to keep interior as standard as possible and fit a bolt-in cage.
	View of passenger side with down tube and removable door bars. Note the tight fit around the dash and A-pillar with many complex curves and three dimensional shape. The door bars are carefully positioned to allow normal operation of the window winders.
	Base of A-pillar on passenger side and B-pillar on driver side. Tubes mount on to plates which are bolted to pads extended from the chassis underneath the sills. Please note that these shots are under construction so the joints are not fully welded.
	View of the main loop and back brace together with detail of the back brace mount tied to the chassis and rear wheel arch. The diagonal brace for the main loop was not fitted at the time of this photograph.
	Basic bolt-in cage for Lancia Appia
	Main loop with back braces to parcel shelf, diagonal bar and second loop above back window.
	Supports from parcel shelf down to chassis.
	Bottom of main loop bolts to mounting box built up around sill at b-pillar.
	1951 Aston Martin DB2 rebuilt from a barn find by Four Ashes to FIA competition specs.
	Full cage with diagonal and front and back tubes. Bolt-in door bars.
	Front a-pillar detail and showing shaped door bars to allow relatively easy access. .

Date	05-Aug-2008
Pictures by	Webmaster