On the leverage question, do a search for "bullpump"May 23 2012 at 12:03 AM
Crosman Forum Member
from IP address 188.8.131.52
Response to No, your right on with the "shearing" motion
for an idea of what's easily doable with simple tools.
With that much leverage, valve overheat and linkage bending becomes a serious issue...lever forces are almost TOO low, though the throw is quite long.