So for everyone that has flown the T-34, let me ask you this. How many times have you pulled exactly 4.5 g's... and no more? For me it was every single PA flight.
I didn't think much about it until I had an aircraft that just had the G-meters reset. It was kinda hard to get up to 4.5 G's.
Then I started to think about it and how the G-meter worked. We all know it works off acceleration and is gravity powered and it has that other needle that holds the "High G" memory with some sort of friction lock.
That brings me to the fact that I could pull back and peg 4.5 G's and it seemed that the needle stopped and rested on the "high G" memory needle due to the friction it takes to move it. Even if I pulled back more the G's wouldn't increase. Especially on the planes with only 4 or 4.2 g's, I would load up 4 G's instantly and not be able to get any more. One plane I tried to get 4.5 G's in a loop and I got shakers before the G meter increased past the memory needle position.
So, thinking about the above, could we be pulling more than 4.5 G's due to the friction of moving that memory needle and putting more stress on the aircraft than what is being considered? Or did the 10lb brain guys figure in the factor of the memory needle on the G meter?