Jester roll cage?
Posted 19 August 2014 - 12:36 PM
Details are below.
I only plan to do sprints and hill climbs.
Can have it landed for under $1000 and then fit it myself.
4 and 8 point roll bars manufactured from 1-3/4'' x .134-wall mild steel tubing
10 and 12 point roll cages manufactured from 1-5/8'' x .134-wall mild steel tubing
Includes 6'' x 6'' x 1/8'' mounting plates
Some tube ends in some kits are notched while most tube ends are not notched for a better custom fit in your particular set-up. This ''extra material'' provides you some leeway for a great fit and easier installation.
8, 10, and 12 point cages exceed NHRA and IHRA standards
Complete, easy-to-follow installation instructions included
Posted 19 August 2014 - 12:56 PM
At the $1000 mark you could easily get a local company like Brown Davies or Bonds or AGI to do one.
Even hit up Lurch if he has time to do a fully complied and signed off cage.
Going local will be a lot less of a headache than ordering through the states. Also on a lot of their "car" shows unless its a full on NASCAR or SCCA type cage they can be very hit and miss in what they do.
Also the US standards mean diddly squat out here if they are not certified as FIA with the correct paper work.
Posted 19 August 2014 - 01:10 PM
Posted 19 August 2014 - 02:38 PM
CDS or CDW in 350N/mmsq tensile strength.
Looks like the Jester complies by size but you would need to clarify the tensile strength rating of their mild steel.
You can build your own cage as long as you follow the diagrams in the CAMS manual and use the right material. Then you sign the paperwork. Simple.
Can you buy a suitable bender and mandrels for that kind of money?
There's no reason why you can't do this yourself either with a pre fab kit or bending it all yourself if you have the time.
Schedule J http://docs.cams.com...le-J-2014-1.pdf
Posted 19 August 2014 - 03:53 PM
A good cage design and fit will have minimal if no gaps between hoops and body, I've seen a bond cage fitting so well that the front legs could be welded straight to the A pillars, (in a WRX) and I've seen so called professional jobs so badly done that I could fit my wrist between the A pillar and the front legs. You don't have much room in a Z so a good design is paramount, especially around your head/helmet area.
If you want to get really serious you can actually design your own cage outside the parameters of the CAMS manual provided you provide the proper engineering to prove it will still withstand the forces required by the FIA. (As you might guess, this is an expensive process)
There are some good cage builders in SA too so ask around locally.
The last cage I had done came from the UK (not a Z ) and I had it tig welded in here in Vic through Peter at Freak Motorsport Fabrications. I can't recommend his work highly enough.(He's on facebook)
Bond bolt in's are a good thing and I've seen many of these fitted but nothing like a Bond weld in, you get what you pay for.
Posted 19 August 2014 - 05:51 PM
My next question is
Has any one seen these benders in action. I have heard they will do the job but am unsure.
Posted 19 August 2014 - 08:56 PM
to get the main hoop and front legs tight takes experience. Worth buying a kit that has legs and hoop done then just cut and notch the rest.
My last bundle of steel cost about $700 and came with necessary paperwork.
Posted 19 August 2014 - 09:14 PM
Posted 19 August 2014 - 09:33 PM
Posted 19 August 2014 - 09:42 PM
Posted 19 August 2014 - 09:49 PM
Have you thought about getting someone to bend the tubing for you?? Then you weld it together yourself?? There is a writeup on hybridZ which also shows the exact dimensions for the main hoop (the hardest thing to fabricate)
I will more than likely go a bond cage. They do the complete pre bent weld in kits. Now I thinking they work out
Double the price of the jegs cage, but attest I know what I am getting.
Posted 19 August 2014 - 10:20 PM
Plus check out your local cage builders, they may do something at a great price and being local can tweek to suit.
Posted 19 August 2014 - 10:25 PM
You can get pipe notchers for a bit over $100 then buy a 40mm holesaw and you can get away with mounting notcher in a vice and us a power drill (although a drill press would be better)
Be warned, I don't think the bond kit will be cut and notched. Considering Andrews supplies Bond with a lot of their raw material there is money to be saved. Don't quote me, but I think he will be around $900-$1000. for all the metal necessary.
Posted 20 August 2014 - 09:02 AM
Not sure on your state rules but here in Tasmania a full cage would make a car unregisterable for normal street registration We do have special interest rally rego down here which allows cars with full cages and other race modifications to be registered but very limited usage ( only allowed to be driven to events workshops for repairs and promotion events) Might be worth checking with your transport if u want to still use car on street
As 240z is 2 seater under our rules can fit half cage and still have full registration
I did build my own half cage 20 years ago but having done it id recommend getting someone to do it or buy a pre bent kit lot headaches in building one
Posted 20 August 2014 - 12:34 PM
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