E93 roll cage?

tlr · 03-05-2011, 10:58 PM

What's the feasibility of putting a roll cage in an E93 for taking to the track? Has anyone done this? Especially interested in one that can easily be removed.

OerdingE93 · 07-20-2012, 01:15 PM

+1 on this

if mounted structurally sound, maybe we could ditch the steel braces underneath?
Could lighten the car up a bit

RiskEE · 07-20-2012, 01:25 PM

Quote:

Originally Posted by OerdingE93

+1 on this

if mounted structurally sound, maybe we could ditch the steel braces underneath?
Could lighten the car up a bit

you would atleast need a full cage before you can pull out the steel braces

ichi_ban · 11-13-2012, 09:17 PM

Bump this for an answer

Car54 · 11-14-2012, 01:52 PM

I'm just curious, why wouldn't you start with a coupe or sedan to convert to a track only car?

koxal · 11-14-2012, 02:01 PM

it is not feasible to track a convertible car because of its extra weight...
i am not saying you cant but not ideal...

THE TECH · 11-14-2012, 02:56 PM

Just have a fab shop make one.

VSmotorsports · 11-14-2012, 02:58 PM

If we had a convertible locally we could test fit our cage

tlr · 11-28-2012, 01:58 AM

Quote:

Originally Posted by koxal

it is not feasible to track a convertible car because of its extra weight...
i am not saying you cant but not ideal...

The track can't handle it?

Seriously though, I realize it won't be competitive with E92s etc, but that doesn't mean I can't have fun and compete against myself.

Car54 · 11-28-2012, 08:55 AM

With the thickness of the hard top, I think you would have to keep the roof down permanently or you would not be able to pass the broomstick test.

Forgive me if you're not new to all this, but you do realize you shouldn't be driving a car with a cage without a helmet right? If you are saying cage but mean roll bar or half cage, then see first paragraph.

LiM3y · 11-28-2012, 10:56 AM

Quote:

Originally Posted by Car54

With the thickness of the hard top, I think you would have to keep the roof down permanently or you would not be able to pass the broomstick test.

Forgive me if you're not new to all this, but you do realize you shouldn't be driving a car with a cage without a helmet right? If you are saying cage but mean roll bar or half cage, then see first paragraph.

I feel like I missed something here. Where does the helmet comment fit in?

bigjae1976 · 11-28-2012, 11:16 AM

I think this makes about as much sense as the helicopter ejector seat.

So you put a cage in your car that you take in and out before and after every event?

Car54 · 11-28-2012, 12:34 PM

Quote:

Originally Posted by LiM3y

I feel like I missed something here. Where does the helmet comment fit in?

Sounds to me that OP wants to put a cage in a car and then take it to the track. That part makes sense, but I don't think he understands that you shouldn't be driving a caged car on the streets....without a helmet.

So OP...enlighten us...are you planning to make you convertible an off-road only car to be for track only?

smmmurf · 11-28-2012, 01:08 PM

Some people race Spec E30's with welded cages, but I doubt you want to weld a cage into your convertible. Install/removal is really a pain of even a bolt in bar/cage.

VSmotorsports · 11-28-2012, 01:31 PM

Quote:

Originally Posted by smmmurf

Some people race Spec E30's with welded cages, but I doubt you want to weld a cage into your convertible. Install/removal is really a pain of even a bolt in bar/cage.

Our customers car, he no longer has the top

Porschefile · 11-28-2012, 04:06 PM

Just get a coupe. Coupe is lighter, more rigid, and has better aerodynamics. If you're hardcore enough to warrant a cage you'd be well advised to put down a few thousand bucks (or possibly even trade straight up) for a better suited car for your purposes.

Purple Derple · 11-28-2012, 04:11 PM

Quote:

Originally Posted by Car54

Sounds to me that OP wants to put a cage in a car and then take it to the track. That part makes sense, but I don't think he understands that you shouldn't be driving a caged car on the streets....without a helmet.

So OP...enlighten us...are you planning to make you convertible an off-road only car to be for track only?

Yes. Once you put a cage in a car, you should never drive the car without wearing a helmet and harness. Car interiors are designed to be soft enough for bodies to crash into during the 2nd collision to reduce injury and a cage would negate this feature of soft safety.

the infamous... · 11-30-2012, 02:44 AM

from wut i kno, stega has the only e93 w/ a roll bar - pm him 4 moar info
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Merked M3 · 11-30-2012, 04:33 AM

The last post shows that it is possible! And he even stripped the back!

Honestly I don't think you will ever want to remove and reinstall a cage. You could go the route of an add-in roll bar. I know they make one for the E90 and E92 (E93 no idea) so you can run racing seats and a harness without a cage. They also are somewhat removable if you only do a few events per year.

Richbot · 11-30-2012, 08:59 AM

Derp.

Purple Derple · 11-30-2012, 10:17 AM

Well... if you want it for show, then look at that it can be done. I wonder if the top can be put up with that bar though or if is not longer a convertible at this point.

If you want it for safety, that bar doesn't look sufficient. My head with a helmet on would stick above that bar for example. Also, Looks like removing the stock seats removes the side impact airbags and they are not replaced by any door bars. I even wonder about how it would hold up in a rollover. The only benefit I see is being able to wear a hans device with this setup. Overall, I just don't think this is a safe solution for track use.

Car54 · 11-30-2012, 10:23 AM

+1

Better off staying with factory engineered safety.

03-05-2011, 10:58 PM	#1
tlr Second Lieutenant Drives: 2011 M3 E93 Join Date: Dec 2010 Location: San Francisco, CA Posts: 281 iTrader: (0)	E93 roll cage? What's the feasibility of putting a roll cage in an E93 for taking to the track? Has anyone done this? Especially interested in one that can easily be removed. __________________ 2011 Space Gray E93 M3
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07-20-2012, 01:15 PM	#2
OerdingE93 First Lieutenant Drives: 2011 Mineral White E93 M3 DCT Join Date: Sep 2011 Location: LA/OC Posts: 338 iTrader: (2)	+1 on this if mounted structurally sound, maybe we could ditch the steel braces underneath? Could lighten the car up a bit __________________

11-13-2012, 09:17 PM	#4
ichi_ban Captain Drives: 335i Join Date: Nov 2011 Location: FL Posts: 842 iTrader: (14)	Bump this for an answer __________________ www.TeamSOLO.Net Facebook: TeamSOLO Alpine Motorsports HorsePowerFreaks

11-14-2012, 01:52 PM	#5
Car54 Captain Drives: 1999 Z3 Mcoupe \| 2008 M3/4 Join Date: Sep 2007 Location: Lutz, FL Posts: 825 iTrader: (1)	I'm just curious, why wouldn't you start with a coupe or sedan to convert to a track only car? __________________ Craig Brickner BMW CCA/PBOC/Chin Motorsports DE Instructor Click to Join: BMWCCA # 366493

11-14-2012, 02:01 PM	#6
koxal Her Zaman Her Yerde Drives: 2013 SG F10 M5 Join Date: Feb 2010 Location: North Jersey Posts: 1,099 iTrader: (7) Garage List 2010 BMW M3 [0.00] 2013 BMW M5 [0.00]	it is not feasible to track a convertible car because of its extra weight... i am not saying you cant but not ideal... __________________ Sold My Black Beast Here is the new ride

11-14-2012, 02:56 PM	#7
THE TECH BimmerPost Supporting Vendor Drives: BPMsport 2012 E92 M3 Join Date: Jun 2011 Location: Kansas Posts: 12,076 iTrader: (39)	Just have a fab shop make one. __________________ Check us out on Facebook at BPMsportlabs

11-14-2012, 02:58 PM	#8
VSmotorsports Lieutenant Colonel Drives: e92 M3 Join Date: Apr 2010 Location: Schaumburg, IL Posts: 1,638 iTrader: (3)	If we had a convertible locally we could test fit our cage

11-28-2012, 08:55 AM	#10
Car54 Captain Drives: 1999 Z3 Mcoupe \| 2008 M3/4 Join Date: Sep 2007 Location: Lutz, FL Posts: 825 iTrader: (1)	With the thickness of the hard top, I think you would have to keep the roof down permanently or you would not be able to pass the broomstick test. Forgive me if you're not new to all this, but you do realize you shouldn't be driving a car with a cage without a helmet right? If you are saying cage but mean roll bar or half cage, then see first paragraph. __________________ Craig Brickner BMW CCA/PBOC/Chin Motorsports DE Instructor Click to Join: BMWCCA # 366493

11-28-2012, 11:16 AM	#12
bigjae1976 Brigadier General Drives: 04 330Ci, 11 E90 M3 Individual Join Date: Mar 2006 Location: Milwaukee, WI Posts: 4,145 iTrader: (8)	I think this makes about as much sense as the helicopter ejector seat. So you put a cage in your car that you take in and out before and after every event? __________________ Sponsored by Momentum BMW #593...We Bleed BMW BLUE!

11-28-2012, 01:08 PM	#14
smmmurf Lieutenant Colonel Drives: 2009 M3 Sedan 6MT Join Date: Feb 2008 Location: Pleasanton, CA Posts: 1,978 iTrader: (7)	Some people race Spec E30's with welded cages, but I doubt you want to weld a cage into your convertible. Install/removal is really a pain of even a bolt in bar/cage. __________________ M3 Sedan LCI - AW/Black - 6MT - no moonroof - no folding seats - RAC RG63 - clear bra by Omega Werks SFR SCCA Spec Miata Champion & driving coach (NASA, NCRC, PTech, private)

11-28-2012, 04:06 PM	#16
Porschefile Major Drives: E92 M3 DCT, E46, Formula Mazda Join Date: Jul 2008 Location: Tennessee Posts: 1,057 iTrader: (5)	Just get a coupe. Coupe is lighter, more rigid, and has better aerodynamics. If you're hardcore enough to warrant a cage you'd be well advised to put down a few thousand bucks (or possibly even trade straight up) for a better suited car for your purposes. __________________ #18 Formula Mazda, Southeast Division SCCA

11-30-2012, 02:44 AM	#18
the infamous... Lieutenant General Drives: like I'M BOUT THAT LIFE Join Date: Jul 2008 Location: PARADISE aka DAWNTOWN Posts: 16,889 iTrader: (0)	from wut i kno, stega has the only e93 w/ a roll bar - pm him 4 moar info __________________ "simple is clean" -The ///ModFather [ iND ] - [ eAs ] - [ ACM ] - [ LTMW ] - [ AA ]

11-30-2012, 04:33 AM	#19
Merked M3 First Lieutenant Drives: E90 M3 6MT Join Date: Apr 2011 Location: Sunnyvale, CA Posts: 314 iTrader: (0)	The last post shows that it is possible! And he even stripped the back! Honestly I don't think you will ever want to remove and reinstall a cage. You could go the route of an add-in roll bar. I know they make one for the E90 and E92 (E93 no idea) so you can run racing seats and a harness without a cage. They also are somewhat removable if you only do a few events per year. __________________ Track / Autocross setup: Forgestar F14, w/ Toyo Proxy R888 & RA-1 F: 18x10 et25 285/30/18 (21.8lbs), R: 18x11 et32 305/35/18 (23lbs) 355mm StopTech \| 96 Octane Laguna Seca previous record - 1:49:498

11-30-2012, 08:59 AM	#20
Richbot Lieutenant Colonel Drives: Jerez Black E90 Join Date: Sep 2007 Location: STL Posts: 1,529 iTrader: (1)	Derp. __________________

11-30-2012, 10:17 AM	#21
Purple Derple Second Lieutenant Drives: car Join Date: Jan 2010 Location: chair Posts: 272 iTrader: (0)	Well... if you want it for show, then look at that it can be done. I wonder if the top can be put up with that bar though or if is not longer a convertible at this point. If you want it for safety, that bar doesn't look sufficient. My head with a helmet on would stick above that bar for example. Also, Looks like removing the stock seats removes the side impact airbags and they are not replaced by any door bars. I even wonder about how it would hold up in a rollover. The only benefit I see is being able to wear a hans device with this setup. Overall, I just don't think this is a safe solution for track use.

11-30-2012, 10:23 AM	#22
Car54 Captain Drives: 1999 Z3 Mcoupe \| 2008 M3/4 Join Date: Sep 2007 Location: Lutz, FL Posts: 825 iTrader: (1)	+1 Better off staying with factory engineered safety. __________________ Craig Brickner BMW CCA/PBOC/Chin Motorsports DE Instructor Click to Join: BMWCCA # 366493

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