Hi guys, I have been following this thread with interest and from where I sit (and I don't race a car or have an axe to grind and this is purely a personal observation so don't crucify me) it would seem that MSNZ have changed the regulations from time to time and some have been caught out with those changes. That being the case then if one builds a roll cage for ones pride and joy then under the regulations at the time it must comply with those regs surely. I once had a lifetime drivers licence however, the body (GOVT) changed the rules and you try telling a cop that you have a lifetime licence. It doesnt wash. The rules are the rules and one needs to comply with those. Just look at the rules for HMC, you turn up with lower profile tires, 16" wheels and alloy heads, they don't comply end of story. Fix that and you can race. The variations in interpretations from engineers is well know and I think that if MSNZ have had an engineers report then who are you/we to argue. Build them to the rules and offer enhancements for additional strength and safety and see what the reaction is rather than charge in with all the legal eagles. It will cost a lot less and a truckload less of drama.
Well thts my view, cheers guys