As I have just passed SVA with this method of attaching a 4 point harness I thought I would post a picture. What is visible in the photo is self explanatory apart from the small, capped, upstand (one on each side) which Andrew, the Carlisle SVA tester, suggested to stop the belt drifting across the cross bar. The upstands are welded to a flat bar which is bolted up under the cross bar to existing captive nuts that I originally fitted for some 3 point harnesses I originally had fitted. Without the upstands I would have failed the test. The mounting for the ends of the two rear belts is made of a plate welded across tube O2 and O3 on the offside and O1 and O3 on the near side (book chassis and two seperate plates.) A nut is welded to the plate and an eye bolt fitted. When I make a boot liner I will enclose the ends of the belts to stop them getting dirty. Andrew said that they easily passed on the height measurement for the belt mounting as the cross bar is effectively the mounting.
