I don't agree that the IVA doesn't look at structural safety.
With a modified production vehicle or radically altered vehicle they do make informed decisions on safety of the body including seatbelt anchorages etc
They measure certain points of the body and the wheel plan and then the seating, these are entered into a computer and then the braking is scrutinised. the results are entered into a computer along with the weights.
This calculates the body lengths and structure along with passenger positions and weights, the wheel plan and centre balance along with gravity calculations taking point of engine crankshaft height and mixes it all up to give accepted numbers.
These are pretty strict and I have had to adhere to them with my builds.
They measure seat heights and seatbelt mounting areas to prescribed limits for the body. The ask for picture evidence if the structure surrounding these has been enclosed so that they can asses the safety.
This is just a scratch of the surface of what is checked. So with minis needing an IVA I again say that your statement isn't correct.
Now with a KIT-CAR where you have yourself built a chassis from tubular steel etc and you are applying for an amateur build status then the rules are very slightly different but the same measurements are taken etc. The VOSA TESTER can asses the welding while inspecting the car and flag up any issues and refuse a test pass on safety concerns.
A pragmatic approach is taken with each car.
No crash testing or scientific stress measurements are taken with an amateur build. If they asked for this then it would be then end for most of us and we have to thank people like ACE who have fought in our corner to allow our amateur building to continue.
The VOSA testers are highly trained and must have the ability to inspect the cars fully to make sure they are SAFE.
I had to get my rear brakes to perform better then they did out of the factory to meet the stringent requirements due to body changes.
The test is there to keep us safe. Making sure the car is correctly nailed together is part of this.
There is still the onus on the builder to make sure the car is safe to use too. People ignoring this test and going ahead anyway are risking our freedoms to build cars like this at all.
Bungle is right to ask about the insurance issues surrounding these builds. and I agree with him.
Both me and Bungle have said about the implications of ignoring the IVA/BIBA for some time and have been ridiculed by nay sayers and people with sand around their neck.
Times have changed, go with it or lose the right to build your own car.
Kill someone in an illegal car and you deserve to face the consequences.
I cannot comment on scrutineering of 2000bhp cars but I am sure they do visually inspect frame/weld structure and safety. Do they crash test each car? doubtful.
The same principles probably do apply.
Edited by minihobbymini, 27 June 2014 - 01:50 PM.