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Fitting A Roll Cage


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#1 TiMtImInYtImTiM

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Posted 17 August 2016 - 11:03 AM

Hi guys,

 

I am looking into fitting a roll cage as part of my Mini track toy project. The car will be used for 2 or 3 track days a year and will still be used on the road. 

 

I have come across a few questions that I need help with please.

 

All of the 'Mini' specific cages I have seen have a diagonal bar running across the rear section of the cage. This bar is not suitable to attach the harnesses to because it will be to high for the driver and too low for the passenger, as well as being at the totally wrong angle.

 

Cage_zps5iau6gxk.jpg

 

Are all Mini roll cages like this? What cages do all use and how have you attached your harnesses?

 

Is it best to weld the cage in or is bolting it in sufficient?

 

Many thanks



#2 nicklouse

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Posted 17 August 2016 - 11:08 AM

you can mount the harness to the seatbelt mounting points for the lower rear seat belts.

 

or you can buy a harness bar to fit to it

https://www.minispor...arness-bar.html

 

bolting to the body is sufficient but read and follow them. (spreader plate sizes and welded in etc).



#3 nicklouse

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Posted 17 August 2016 - 11:09 AM

more reading http://www.theminifo...ount-harnesses/



#4 rally1380

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Posted 17 August 2016 - 11:18 AM

If a cage is designed to be bolted in I would suggest you bolt it in.....and make sure you weld in the correct spreader plates when doing so.....if the cage is a weld in cage then obviously it needs welding in and I would suggest taking it to a professional to do this.

 

Bolt in ones have the advantage that they can be removed in between track days as you will get fed up with the lack of rear seat access and from banging your head on it.......and on that subject, roll cages are great in a roll over in a motorsport scenario when you are wearing helmets and harnesses are properly tight, but in every day use they can actually be dangerous.....smack your head on a cage in an accident and it will leave an ugly dent!

 

harness bar - as Nick says above, you can mount the harness lower down on the rear seat, but personally I prefer less of an angle on my shoulder belts.  Getting a harness bar to sit higher is really only possible if you weld a bar in or use a safety devices bar as suggested.....but whether this would fit an OMP cage???  I ended up making my own bolt in version.

 

Safety devices do 3 different styles of cage for a mini - standard bolt in, multipoint bolt in, and the weld in one.  Budget will dictate which way you go I suppose.  



#5 rally1380

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Posted 17 August 2016 - 11:20 AM

http://www.safetydevices.com/



#6 Broomer

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Posted 17 August 2016 - 12:02 PM

If a cage is designed to be bolted in I would suggest you bolt it in.....and make sure you weld in the correct spreader plates when doing so.....if the cage is a weld in cage then obviously it needs welding in and I would suggest taking it to a professional to do this.
 
Bolt in ones have the advantage that they can be removed in between track days as you will get fed up with the lack of rear seat access and from banging your head on it.......and on that subject, roll cages are great in a roll over in a motorsport scenario when you are wearing helmets and harnesses are properly tight, but in every day use they can actually be dangerous.....smack your head on a cage in an accident and it will leave an ugly dent!
 
harness bar - as Nick says above, you can mount the harness lower down on the rear seat, but personally I prefer less of an angle on my shoulder belts.  Getting a harness bar to sit higher is really only possible if you weld a bar in or use a safety devices bar as suggested.....but whether this would fit an OMP cage???  I ended up making my own bolt in version.
 
Safety devices do 3 different styles of cage for a mini - standard bolt in, multipoint bolt in, and the weld in one.  Budget will dictate which way you go I suppose.


In 8 years of having my cage fitted I have never hit my head on it. 6ft for reference.

#7 nicklouse

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Posted 17 August 2016 - 12:04 PM

 

If a cage is designed to be bolted in I would suggest you bolt it in.....and make sure you weld in the correct spreader plates when doing so.....if the cage is a weld in cage then obviously it needs welding in and I would suggest taking it to a professional to do this.
 
Bolt in ones have the advantage that they can be removed in between track days as you will get fed up with the lack of rear seat access and from banging your head on it.......and on that subject, roll cages are great in a roll over in a motorsport scenario when you are wearing helmets and harnesses are properly tight, but in every day use they can actually be dangerous.....smack your head on a cage in an accident and it will leave an ugly dent!
 
harness bar - as Nick says above, you can mount the harness lower down on the rear seat, but personally I prefer less of an angle on my shoulder belts.  Getting a harness bar to sit higher is really only possible if you weld a bar in or use a safety devices bar as suggested.....but whether this would fit an OMP cage???  I ended up making my own bolt in version.
 
Safety devices do 3 different styles of cage for a mini - standard bolt in, multipoint bolt in, and the weld in one.  Budget will dictate which way you go I suppose.


In 8 years of having my cage fitted I have never hit my head on it. 6ft for reference.

 

crashed much?

 

there is a difference between hitting it and hitting it.



#8 Broomer

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Posted 17 August 2016 - 12:50 PM

If a cage is designed to be bolted in I would suggest you bolt it in.....and make sure you weld in the correct spreader plates when doing so.....if the cage is a weld in cage then obviously it needs welding in and I would suggest taking it to a professional to do this.
 
Bolt in ones have the advantage that they can be removed in between track days as you will get fed up with the lack of rear seat access and from banging your head on it.......and on that subject, roll cages are great in a roll over in a motorsport scenario when you are wearing helmets and harnesses are properly tight, but in every day use they can actually be dangerous.....smack your head on a cage in an accident and it will leave an ugly dent!
 
harness bar - as Nick says above, you can mount the harness lower down on the rear seat, but personally I prefer less of an angle on my shoulder belts.  Getting a harness bar to sit higher is really only possible if you weld a bar in or use a safety devices bar as suggested.....but whether this would fit an OMP cage???  I ended up making my own bolt in version.
 
Safety devices do 3 different styles of cage for a mini - standard bolt in, multipoint bolt in, and the weld in one.  Budget will dictate which way you go I suppose.


In 8 years of having my cage fitted I have never hit my head on it. 6ft for reference.
crashed much?
 
there is a difference between hitting it and hitting it.

I was replying to the comment of getting fedup of banging your head on it, as in it was a frequent issue.

#9 rally1380

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Posted 17 August 2016 - 01:19 PM

 

 

 

 


In 8 years of having my cage fitted I have never hit my head on it. 6ft for reference.
crashed much?
 
there is a difference between hitting it and hitting it.

I was replying to the comment of getting fedup of banging your head on it, as in it was a frequent issue.

 

 

 

Small head?



#10 Broomer

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Posted 17 August 2016 - 02:41 PM

Story of my life mate.

#11 TiMtImInYtImTiM

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Posted 18 August 2016 - 09:57 PM

The safety devices 6 point bolt in with no cross bar and then add the harness bar is exactly what I was after. Thanks all






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