Because behind the rear bulkhead I have installed the fuel tank I decide to make some passive fire proofing.

Our Belgium Friend has found for us a nice left over plate of Glare®  This panels are used in the new Airbus A380 and will provide a protection against 1500°C for a wile.

Check for the most outwards location of the safety belt anchors, there is no more room there due to the body shape, and it is just fine.

Here bellow, you can see how DAX have set the new anchor location on top of the body. This picture was curtsey of Dave Brookes.

SECOND SOLUTION

As you can see in the left picture DAX have made also a solution for the old cars so that they can pass the SVA but more important the driver and passenger will be more safe.

This is a good solution but you need to have the required space at the boot to install the brackets (towers) Call DAX they will help you with your needs. But don’t forget this anchor point

COBRA289

Knowledge shared with others will result in Progress.

The AC Cobra Replica Site

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Revised at 14 - June.-2007

Revision of Safety Belts TOP Anchor points. (DAX AC Cobra MK3)

DAX have had, in the old Cobra models, an other location for the TOP anchor bolt of the safety belts. Today the anchor points are located above the body above the shoulder line.

Today’s, all the Kit's produced in the UK needs to pass the new regulations, so call “SVA” that is the main reason why DAX and others have changed the location of the belts to fulfill the regulations, and that is right, because this will improve the safety of your car.
According to the SFI the top anchor point should have maximal angle of 5° below the shoulder line and a maximal of 30° above the same line.
All the old DAX Cobras have the anchor located behind the seat and to low, here we need to change this for our safety.

If you have and accident, even at a very low speed of 20 Km/h you spine will be compressed first and than the belt will be stop the forward movement. This will generate and injury that is worse that the accident without wearing the belts.

That is NOT the idea of a working safety belt!!!!!!!!!!!!

To solve this problem, I have design some brackets, Stress Calculations where made to confirm the strength and it was exposed to all the “G” forces that such of accident will produce. Solid Works was used to make the FEM (Fine Element Method) calculations.
There are more solution than this one, but I hope that herewith you can start to make your own design.

FIRST SOLUTION
We use as starting point the existing anchor point, we need some materials.

Square tube from 40x30x4 mm would be fine. Steel bar of 50x7 mm, some M-8 bolts and the original anchor bolts.

See this drawing to have an impression of what we want to make.