Half Cage interest

camberadam

Sergeant
Feb 15, 2017
257
Baltimore
I'm working with local fabricator/mech engineer to look at half cage options for my car. All the options I've found either something I don't like or are too much $$$. We've talked about making a small batch & want some feed back from others to keep in mind. We're thinking 1.75" DOM or chromoly & tig welded. Finishing (paint or pc) would be up to the buyer to keep cost down. Ideally would be as bolt in as possible if demand is there but that will be determined once we're into it.

Who's interested?
Ball park price?
Lose rear seat completely?
Lose seat back keep bottom?
Keep seat?
Finished or Raw?
Other things to incorporate?
 
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Cheezy

Lieutenant
Nov 7, 2016
588
Toledo Ohio
Im interested. Already ditched rear seat completely. Would like it to be less than 4 digits price point. Harness bar incorporated. Shipped raw.
 

VACust

Corporal
Dec 1, 2016
112
US - Utah
Keep the rear seat if possible. You will have to modify ge side bolsters to keep them but I wouldn’t think it would be that bad to do. Maybe make the rear legs have enough contour so you don’t obstruct the rear 1/4 windows?
 
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doublespaces

Administrator
Oct 18, 2016
7,206
AZ
So you can just slip the cross bars out the trunk and put the seat back up and drive normally, right? This would need to be more complicated for a convertible since the fold down seats do not expose the trunk, not like there would be a market for that anyway.
 

[email protected]

Corporal
Platinum Vendor
Oct 25, 2016
142
Houston, Texas
The cage won't be very strong since it doesn't have the cross bars intersecting the node of the other bars tube.
Or, perhaps the mounting bracket that is welded at a 90* angle to the tube will be ripped off the face of the tube.
In any case, its a compromise and not an ideal strong solution.
 
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doublespaces

Administrator
Oct 18, 2016
7,206
AZ
The cage won't be very strong since it doesn't have the cross bars intersecting the node of the other bars tube.
Or, perhaps the mounting bracket that is welded at a 90* angle to the tube will be ripped off the face of the tube.
In any case, its a compromise and not an ideal strong solution.
Wouldn't it be possible to just weld in another removable bar?
 

JimboFresh206

Corporal
Jan 29, 2018
168
seems like ok concept, but cages on street cars... are they willing to include hoop padding and actually design it so its semi safe for the street?
 

Kenjermen

900HP Club (N54)
Nov 6, 2016
241
N las vegas NV
Interested
Needs harnesss bar
No backseat
Raw finish will make it easier on buyer to color match and on seller about shipping
A 4 point will work for just a roll bar
Preferable it to be certifiable by what ever race event one is doing ie NHRA compliant
 
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The Convert

Lieutenant
Jun 4, 2017
966
If you want a half cage, just get specs on the M3 GTS cage and have it copied. You know it was engineered to be safe and meet certs. Then pad it for street use.
 

Kenjermen

900HP Club (N54)
Nov 6, 2016
241
N las vegas NV
If you want a half cage, just get specs on the M3 GTS cage and have it copied. You know it was engineered to be safe and meet certs. Then pad it for street use.
That'll only work for the E90 not so much for the 92 also just curious but is the m3 wider on the inside or are the specs the same as well
 

Kenjermen

900HP Club (N54)
Nov 6, 2016
241
N las vegas NV
GTS is a coupe, not a 4 door.
My bad missed the GTS part. But Autopower already makes a decent roll bar. The problem I've seen is the lack of 6 point full cages and fitment there. Most drop before the dashes blocking certain view points where I wouldn't mind cutting the dash for a proper fitting cage
 
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