Roll cages.-Tech project.

[BCA]

Due to a mix up with the deadlines at school, our tech department have decided they need one part of our work in tomorrow.

To do this I will need to have a bit of information on rollcages.

Any PH'ers care to share thier knowledge or explain to me what type of rollcage they have in thier car?? No names will be used and it is all for a bit of background knowledge.

Has anyone got any links for more info on rollcages?? Im really lost on this one!!

Thanks in advance for your help,
Ben CA

[dontlift]

www.rollcentre.co.uk/

Have photos of fitting of rollcentre cage to TVR tasmin if they are any good to you

>> Edited by dontlift on Thursday 3rd April 21:05

[deltaf]

Thats the same as in my Golf....was ok to do but hadda cut all the scallops myself....(2 days) from start to finish including triangulated front turrets..

[BCA]

Thanks for the link, cant believe I hadnt thought about checking that website - despite following the Rollcentre Cerbera/Tuscan R throughout its racing career

thanks for the offer of piccys, but I dont think I need them, I just need information really, but thanks anyway.

What would I do without PH??

[mrsd]

Safety devices have pics and info as well

[jezp]

Don't know if it is to late to help but what information are you after? I have some experience with the design of rollcages for a couple of touring car teams.

[BCA]

err - any general information is excellent, types of materials used - thicknesses etc etc

Thanks for all the help guys, its exactly what im after!

[dontlift]

jezp said: Don't know if it is to late to help but what information are you after? I have some experience with the design of rollcages for a couple of touring car teams.

You may be too late for this thread, but I may need to pick you brains re: a certain Kamala I am taking custody of later this month

[moleamol]

Anybody know an approximate price for fitting a Roll Cage? Without diagonal (or removable) and with no high door bars (it's for an integrale if that counts). Cheers people, sorry to do a bit of a thread hijack

[dontlift]

moleamol said: Anybody know an approximate price for fitting a Roll Cage? Without diagonal (or removable) and with no high door bars (it's for an integrale if that counts). Cheers people, sorry to do a bit of a thread hijack

Cage itself is between 300 - 700 quidish depending on type and car it is for (more common = cheaper) but fitting is another game altogether would recommed you get it done properley - budget another 300 to 500 i would guess.

Your best bet would be have a word with the boys at roll centre, or squeel and squeeks

>> Edited by dontlift on Thursday 3rd April 23:04

[jezp]

BCA said: err - any general information is excellent, types of materials used - thicknesses etc etc

Thanks for all the help guys, its exactly what im after!

Right the best place to find out information about thickness (for racing cars anyway!) is the FIA homepage technical regulations appendix J aritcial 253 (link below)
( from pull down menu select technical and sporting regulation then select appendix j) then open the safety equipment section and it is section 8.

www.fia.com/homepage/selection-a.html


The most common material used in touring cars is Cold Drawn Seamless steel tubing (CDS)or in the good old supertouring days it was T45 steel tubing.
The typical stiffness of a race car with a full weld in roll cage is about 25,000 to 40,000 NM/deg, which compares to an average road car that has a stifness of around 5,000NM/deg for a good car. Stiffness is calculated by twisting the car via the front suspension mounting with the rear suspension mounting fixed.

The stiffest you will ever make a car is about 60,000NM/deg BUT STIFFER IS NOT ALWAYS BETTER it can make the car to sensitive usual figure is about 30,000NM/deg.

Typical sizes are around about the following:- The two main hoops are 1.75" or 1.diameter and most of the other tubes at 1.5" dia and 18swg thick (about 1.2mm thick) or 1" dia 18swg thick.

I hope this helps you. Alot of this is from memory as it has been a while (3 years) since i last worked on a roll cage. (ended up working on designing boats since reynard went under!)

Best of luck!

[BCA]

WOW excellent - thanks!!

[Fatboy]

moleamol said: Anybody know an approximate price for fitting a Roll Cage? Without diagonal (or removable) and with no high door bars (it's for an integrale if that counts). Cheers people, sorry to do a bit of a thread hijack

When I got my cage from Safety Devices it cost £700 (full multi point job) and would have been about double to have had them fit it - I can dig up the price list if you want?

>> Edited by Fatboy on Friday 4th April 11:20