Right few questions here. But ill start by saying info. I have a 2001 3dr focus thats currently in many pieces lol. I want a roll cage but i want to build it it does not have to confrom the any specs as car will be used for quarter miles and maybe a few track days.

1 Whats the best way to go about building the cage im i right in thinking that i should make it as traingled as possible.

2 Whats the best pipe to use any spec wall thickness ect ect.

3 I have a pipe bender several welders and grinders is this enough tools?

Thanks

 

you'll never build it right !!!!!!! up to you its your life!!!!!!!!!!!!!
using carbon steel or alloy!! you need to know what your doing alley bars have been making roll cages for years and a day-------- save your life and anyone close to you and the track and get an FIA APPROIVED ITEM ---------

 

Yeah great advice thats why i made the post asking about them. Surely any cage i make and build is better than not having a cage i posted this to see if any one had advice in making a cage.

 

Whereabouts are you mate? If you're oop north AG Motorsport could build you a nice cage, have a look at the link in my siggy and have a looksie at the cage in our focus

 

I have made 4 roll cages for my race cars, in my opinion roll cages perform two main functions once installed into a car. Firstly and obviously they protect the ocupant from harm in the even of an accident, secondly and more importantly it stiffens the chassis to maintain geometries of the wheels on the road.
Roll cages are an art to build correctly, not only to design but to actually install. A badly built and installed cage could be a waste of money and be dangerous. if its not designed and built right it may fail when it is needed most, if it does it may be more deadly than the accident in the first place. many a home made cage has collapsed or sheared during an impact, leaving unrestrained steel bars to fold onto, or pierce through passengers and drivers...trust me it happens.
The geometries of triangulation, while not difficult to achieve are all important to success.
Roll cage material is also important. Cold drawn seamless (CDS) bar is common, whatever you call it in the UK, moly and alloy tubes all vary in thickness, but of course the thickness is important. There are rules governing the cage design in most forms of motorsport, drags and trackdays may not though.
Bends need to be mandrel and cannot deform the tube, the welding needs to be tight, neat and seamless and to prevent failure should be quality welded.
Are you going for a weld in cage or a bolt in. if its weld in make sure you install the main parts or raised feet, last, to allow you fully weld around the top tubes before jacking it up into position and installing the feet, otherwise the cage will be hard up against the roof sheet and inaccessible.

Good luck, hope this helps

Justin P

 

Thanks for the advice sort of info i was after. I will be doing much more reschearch before building was just wanting more of a idea. Im in scotland daveysaff nice project.