Roll cages

All the info you need to race E30's

Moderator: martauto

User avatar
Rik178m
E30 Zone Regular
E30 Zone Regular
Posts: 934
Joined: Fri Sep 15, 2006 11:00 pm
Location: Nottingham

Post Sat Dec 29, 2007 8:14 pm

If I made a roll cage myself what would this stop me from racing in? Howmuch does a rollcage cost on a budget?
Cabrio
E30 Zone Camper
E30 Zone Camper
Posts: 1031
Joined: Wed Aug 03, 2005 11:00 pm

Post Sat Dec 29, 2007 8:28 pm

You could not enter a proper event with a homemade cage...you could do trackdays...but unless do it well it could be more dangerous than no cage..if it breaks in an accident

The MSA are bringing in new regulations for cages soon and all DIY fitting will be then questioned (weld in cages)

Plenty of options for the E30 for bolt in cages - OMP, Sparco and Safetydevices (priced in that order if on a budget)

OMP bolt in and Safetydevices on ebay at present

If you cost the CDS (steel) you need which would be the cheapest material and your time etc

If on a budget OMP will do you but need to cut out sunroof if have one
OR
Safetydevices do a rear section with single diagonal so could get just the rear and add the front when have more money

Depends on your skill with a welder and cost paying for metal....if can get for free so just your time and only doing track days and good at welding then you could have a go and then still buy one later...hope that helps
User avatar
Rik178m
E30 Zone Regular
E30 Zone Regular
Posts: 934
Joined: Fri Sep 15, 2006 11:00 pm
Location: Nottingham

Post Sat Dec 29, 2007 9:45 pm

Yep that helps alot mate thanks. See how my finances are when the time comes then! Checked ebay and theyre around £800!!!! Are rollcages only made from steel as I'm guessing thats abit heavy?
Cabrio
E30 Zone Camper
E30 Zone Camper
Posts: 1031
Joined: Wed Aug 03, 2005 11:00 pm

Post Sat Dec 29, 2007 9:54 pm

There is also an OMP one for £375 and I know if you can buy just a rear Safetydevices will be less again if only single diagonal rather than the X with harness bars...no problem

There are pros and cons of all the cages but as your on a budget then you wil have to do some of the work like paint the cage yourself and can fit one of these yourself...the more expensive ones are powder coated and generally better made...good luck
Cabrio
E30 Zone Camper
E30 Zone Camper
Posts: 1031
Joined: Wed Aug 03, 2005 11:00 pm

Post Sat Dec 29, 2007 9:55 pm

Most cages are made from either CDS, FE45 or CrMo...different weights but have to be strong and different costs...some people are trying to do Carbon cages but cant see this happening
User avatar
iguana
E30 Zone Newbie
E30 Zone Newbie
Posts: 78
Joined: Sat Feb 03, 2007 11:00 pm

Post Mon Dec 31, 2007 3:13 pm

Rik178m wrote:Yep that helps alot mate thanks. See how my finances are when the time comes then! Checked ebay and theyre around £800!!!! Are rollcages only made from steel as I'm guessing thats abit heavy?
As said above OMP bolt in about the cheapest, can fish around & get sub £350, fine to race with in many series. Will take just a few hours to sort out the weld in feet plates.

Approx 25-30kg


If you are after a custom weld in jobbie from £1000 fitted up to £several K area for something mega.
www.lizardlogistics.com
Vehicle Transportation Specialists
12345kevin
E30 Zone Camper
E30 Zone Camper
Posts: 1161
Joined: Sat Apr 09, 2005 11:00 pm
Location: Essex

Post Mon Dec 31, 2007 3:26 pm

Rik178m wrote:Yep that helps alot mate thanks. See how my finances are when the time comes then! Checked ebay and theyre around £800!!!! Are rollcages only made from steel as I'm guessing thats abit heavy?
It may be a lot, but at the end of the day, what is your safety and possibly life worth ! I would budget for good safety equipment before considering mods to car etc.
agreen
E30 Zone Addict
E30 Zone Addict
Posts: 2107
Joined: Thu Aug 30, 2007 11:00 pm

Post Mon Dec 31, 2007 3:49 pm

i have a full saftey devices bolt incge rear cross over harness bars door bars dash suport,

looks great

- oversized tubing
- powder coated already
- looks the buisness
- upgrades avalable like double cross door bars

i had to save for long and i mean a long time for this cage but its worth it as now i have a solid shell with a solid cage

save and buy a sd mate its the way to go honest :P
billgatese30
E30 Zone Team Member
E30 Zone Team Member
Posts: 10989
Joined: Sun Jan 09, 2005 11:00 pm
Location: Tyne & Wear

Post Mon Dec 31, 2007 4:30 pm

agreen wrote:
- oversized tubing

what size is oversized??

what is its outside diameter and what is the wall thickness?
agreen
E30 Zone Addict
E30 Zone Addict
Posts: 2107
Joined: Thu Aug 30, 2007 11:00 pm

Post Mon Dec 31, 2007 4:44 pm

i mean the tubing itself

ie the outside is bigger in diameter than the omp cage

when you see them next to each other the omp looks skinny

i just think it makes it look better being bigger in diameter

imo :P
Cabrio
E30 Zone Camper
E30 Zone Camper
Posts: 1031
Joined: Wed Aug 03, 2005 11:00 pm

Post Mon Dec 31, 2007 4:48 pm

With cages you tend to get what you pay for ...but as stated before need to consider use

Some people stock the cages and deal with them all the time...others may order in...take some advice from recognised manufacturer or supplier if not clear, as lots of misinformation around...good luck
billgatese30
E30 Zone Team Member
E30 Zone Team Member
Posts: 10989
Joined: Sun Jan 09, 2005 11:00 pm
Location: Tyne & Wear

Post Mon Dec 31, 2007 4:50 pm

agreen wrote:i mean the tubing itself

ie the outside is bigger in diameter than the omp cage

when you see them next to each other the omp looks skinny

i just think it makes it look better being bigger in diameter

imo :P
i know what you mean

i was just wondering if it was 1"5/8ths or 1"3/4, wether it was a 3mm or 4mm wall thckness, i was just curious
Cabrio
E30 Zone Camper
E30 Zone Camper
Posts: 1031
Joined: Wed Aug 03, 2005 11:00 pm

Post Mon Dec 31, 2007 4:51 pm

He means the tube diameter
UweM3
E30 Zone Squatter
E30 Zone Squatter
Posts: 1657
Joined: Sun Jul 03, 2005 11:00 pm

Post Mon Dec 31, 2007 5:18 pm

billgatese30 wrote:
agreen wrote:i mean the tubing itself

ie the outside is bigger in diameter than the omp cage

when you see them next to each other the omp looks skinny

i just think it makes it look better being bigger in diameter

imo :P
i know what you mean

i was just wondering if it was 1"5/8ths or 1"3/4, wether it was a 3mm or 4mm wall thckness, i was just curious
4mm wall thickness, holy cow! Do you know how much that would weigh?? It's more in the region of 2 -2.5 depending on tube dia.

You can't judge a cage just buy the diametre of the tubing. Wall thinkness and material play a big part. As better the steel, as thinner the gauge.

have a read here, page 15. (some good information about mounting your harness as well)
http://argent.fia.com/web/fia-public.ns ... penelement
Last edited by UweM3 on Mon Dec 31, 2007 5:27 pm, edited 1 time in total.
billgatese30
E30 Zone Team Member
E30 Zone Team Member
Posts: 10989
Joined: Sun Jan 09, 2005 11:00 pm
Location: Tyne & Wear

Post Mon Dec 31, 2007 5:26 pm

I realise this, but assumed that the omp cages wouldn't be cro-moly or anything like that

i helped remove a safety devices cage from a VW Beetle the other week that was fairly small diameter.

i think it was only about 1"1/2 but was 4mm wall thickness (measured it with a mic)

I thought it was massively excessive too.

The new regs for his series demand at least 1"5/8 with at least a 2.5mm thickness i think, and can't remeber what the steel spec was now though, its a twat to bend though :o
jibowski
E30 Zone Newbie
E30 Zone Newbie
Posts: 238
Joined: Thu Dec 28, 2006 11:00 pm
Location: east yorkshire coast

Post Mon Dec 31, 2007 5:28 pm

theres an omp 6 point on ebay now for 400ish
No E30s at the mo!!
2002 Seat Arosa TD I
1996 Saab 900 turb0
Timbopbmw
E30 Zone Newbie
E30 Zone Newbie
Posts: 157
Joined: Tue Oct 30, 2007 11:00 pm

Post Mon Dec 31, 2007 7:47 pm

OMP can be a pain to fit , and you have to weld the door bars and mounts yourself (well on a 205)

ive gone for a sparco cage for the e30 , dead easy to fit slighty more expensive at £500ish but better quality and seems a realy nice finish!
Cabrio
E30 Zone Camper
E30 Zone Camper
Posts: 1031
Joined: Wed Aug 03, 2005 11:00 pm

Post Mon Dec 31, 2007 10:12 pm

The cages for PBMW challenge are CDS as per Safetydevices cages - see website www.safetydevices.com they also give info on different cage materials and structures if interested

The OMP cages currently for the E30 tend to be T45 for 6 point and CrMo for 10 point etc..which although are FIA you cant use in PBMW challenge and RWD challenge...remember there are minimum weights

There are BMW specialists that supply all the different makes and can give advice
Black_Potato
E30 Zone Regular
E30 Zone Regular
Posts: 774
Joined: Thu Nov 22, 2007 11:00 pm
Location: Colchester

Post Mon Dec 31, 2007 11:05 pm

If you plan on racing in a series make sure you read the regs as many can change.

But as had been said, PBMW is FIA approved CDS only..

There is an example of what is onvolved to install a SD cage here...
The next step up from this is a full weld in custom cage.
User avatar
MJG
E30 Zone Regular
E30 Zone Regular
Posts: 405
Joined: Fri Jul 28, 2006 11:00 pm

Post Wed Jan 02, 2008 8:50 pm

I'm getting a full weld in custom cage from a mate who's just starting up his own fab/cage/general car work shop ProCage. PM him on www.driftworks.com his username is Clarkey. If you are interested. Would be around £600 all told for a custom item depending on what you want. Other than that, fabricage are popular in the drifting circles and do decent bolt in custom cages so if you wreck your car you can put the cage in another one :D
Cabrio
E30 Zone Camper
E30 Zone Camper
Posts: 1031
Joined: Wed Aug 03, 2005 11:00 pm

Post Wed Jan 02, 2008 10:48 pm

Cant comment on regs for drifting...but I do know they wont be the same as Racing and Rallying that have to be within MSA or FIA regulations ...but good luck with the new business

I would be carful with the name Custom Cages as it is the name of a brand and company...cheers
User avatar
northloop
E30 Zone Regular
E30 Zone Regular
Posts: 944
Joined: Wed Aug 16, 2006 11:00 pm

Post Thu Jan 03, 2008 1:43 pm

I dont think there is a right or wrong cage to buy............ You can buy cheap (ish) bolt in cages which would probably do the job. You can buy something comprehensive like a 'custom cage' product and it will cost around £750 to buy plus another £1000 to fit. Or you can get someone to make one up for you from scratch. I like to think that buying one from a supplier to their pattern means the concept has been tested before it gets to my car. The first time one made from scratch gets tested is when I hit something.

Loads of variants - no rights and wrong - personal choice.

plus of course whatever your race series calls for .........
User avatar
MJG
E30 Zone Regular
E30 Zone Regular
Posts: 405
Joined: Fri Jul 28, 2006 11:00 pm

Post Thu Jan 10, 2008 4:57 pm

Sorry didn't realise "custom cage" would cause copyright infringement, just saying it is a "custom cage" as it is a cage that is custom.

Drifting does have it's own rules, correct, but they are pretty much in line with MSA/FIA guidelines, if not exactly the same.

I'll get pictures up when/if I get it done in a few weeks, and if you like what you see then by all means contact my friend.