Originally Posted by SMRacer
The sub belt, however, is not intended to prevent you from rising off the seat.
I agree that it is not the primary purpose but it does help a lot.
The belt system performance while flying through moderate to heavy turbulence between crotch belt on (and properly adjusted) and crotch belt off is very noticeable.
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Van's Aircraft Engineering Prototype Shop Manager
RV-6A (aka "Junkyard Special ")