Roll Cages for Porsches
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.
Porsche for full-on competition use. Note braces tying front down tubes and main loop to body. The sun roof doesn't do much for stiffness so this additional connection does much to stiffen the whole structure.

Substantial door X has further reinforcement. The main front tube goes deep into the foot well so an additional upright tube adds strength at the a-pillar.
Back braces with X tubes and seat belt mounting tube, the link between the main loop and the b-pillar can just be seen.
The four feet of the cage on the near side; foot well, a-pillar, b-pillar and back brace.
An alternative to the usual roof X gives a bit more head room for a taller driver.
1960's "original" Porsche 911

Main loop, back braces with diagonal and seat belt tube
Front tubes, dash bar and screen bar.
The three feet of the cage on the driver's side; a-pillar, b-pillar and back brace.
Another Porsche 911 for competitive use, this time to be rebuilt into a derivative model.
 A little more difficult to fit than the empty shell above but essentially the same layout.
Main loop, back braces, triangulation and seat belt tube.
Bottom of the main loop and back brace
Short timescale project to replace existing cage.
Door X bars to FIA standards with additional bracing.
Detail of door X bar with dash trimmed around A pillar tube

Porsche 993 GT2 with FIA spec cage. This uses the increasingly popular option of 2 inch tube for the main loop.

Base of main loop and back stay.
Date  25-Mar-2010
Pictures by  Webmaster & Andy