pic: Simple hook delivery system

[Kevin_Crossland]

Originally Posted by JesseK

It looks like it's a literal air cannon - there are no pneumatic cylinders involved. The fitting isn't modified, it's just attached. Inspection would be easy so long as the housing for the canon isn't PVC, PolyCarb, Fiberglass or other material that is prone to splintering during an extreme failure event.

the question I guess would be if it classifies as pneumatic component, I figure if worse comes to worse it's a pressure relief with a conveniently placed harpoon

[joeojazz]

What type of pneumatic cylinder do you use?

[s_forbes]

Ours just uses the pneumatic cylinder as the latching mechanism to release the crossbow. We just used a 1" or 2" stroke 3/4" bore cylinder. The latex tubing stores all of the energy that fires it up to the bar.

I put the parts into CAD based on memory, since the real mechanism is in the bag. Here's a better angle (click for bigger image):