I saw a program about an Indy car driver, who was testing the car and had all sorts of accellerometers attached to the car. He crashed and sustained 130G and walked away. Obviously it was very short duration but the big thing was the car protected him.
In the same way the Diamonds I like to fly have the 26G cockpits and seats. This is nice to know, and nice to know that in a forced landing which doesn't go horribly wrong it is unlikely that the engine will end up on your lap (unlike the Cessna 172 for example which has nothing to protect you). In reality so long as you don't nose dive into the ground, if you make a forced landing and stop in ~10m, the G forces shouldn't peak at more than about 20G (if my maths is correct).....
As someone used to tell me when flying over the LA sprawl.....if the engine fails, aim for the loft window. At least the wings will absorb some of the impact and you may walk away..........
