2022General Discussion forum
Spring behavior in arm socket blocks differs between front-mount and back-mount vest configurations
What the thread found
- The standard arm-to-vest connection with side-to-side adjustment screws positioned on the outside of the armature reverses the spring action in the male socket block when used on back-mounted vests.
- The spring in the arm socket block has been designed since approximately 1976 to pull the arm out of the way when moving the sled across the body.
- On back-mounted vests, the reversed spring action pushes the arm toward the sled instead of away from it, which is undesirable.
- Removing the spring entirely would prevent the arm from being pushed toward the sled, though this eliminates the spring's original function.
- Positioning the side-to-side adjustment screws on the inside of the armature, rather than the outside, preserves the correct spring action and keeps the arm moving away from the sled.
- Springless socket block adaptors are available as an alternative solution for back-mounted configurations.
Depends on
- The observation is based on examination of multiple back-mount vests at a single workshop.
- The existence of certain springless socket block options was reported but not directly verified by the original observer.
- Solutions may be specific to certain arm manufacturers and models.