Scooter
My car passed SVA test in 2000 with full harness belts (Caterham aircraft buckle type) and many others have passed this way since, so inertia reel don't appear to be necessary. I seem to remember that seat belts should haved one handed operation, but whether this is for fastening or unfastening I'm not sure. Certainly harnesses are not one hand friendly.
I had assumed that seat belts had to have some sort of European approval marks and that the American style hook and latch type would not have this. I have just looked at the belts in my 7 and they only appear to have FIA approval, which ran out in 2003!! I've quickly googled and found this
http://www.securon.co.uk/press/seat_belts_general.htm#approvalvmot
Seems MOT only requires belts to be examined for wear. My car is due for MOT test in February - I'll ask my friendly tester.
If you do go ahead and purchase the belts, suggest you go for 3 inch wide lap and shoulder straps and perhaps more importantly check the lengths, and where the adjusters will end up. In a 7 it's important that the adjusters on the lap straps are the type that pull up i.e. pull loose ened towards the sky when adjusting. There is no room in a 7 to pull the strap down. Also watch what fittings are on the ends. Many are a clip type which go onto an eyebolt, which may be OK for shoulder strap, but there is not enough room to fit on a lap strap. On a lap strap, you need the fittings with a hole and a bolt through.
Forgive me if I'm telling you something you're already aware of.
I'd be interested to know how you get on.
Paul Richards
Area Representative - L.A.D.S. (Lancashire and District Sevens)
Growing old is compulsory - Growing up is optional