The pivot is the only part of the linkage that can.April 21 2011 at 11:21 PM
CO222 (Login CO222)
Crosman Forum Member
from IP address 22.214.171.124
Response to Well, the pivot itself doesn't hold the valve at all,...
Because it's the only part that transfers reaction force from the tube.
Also take into account that the securing screw and metal transfer seal have a bit of clearance
around them, allowing movement. I wonder how much a pumper's velocity loss from firing with
the arm open is attributed to this. Sounds like a good experiment.