Version 3 VIDEO
^^ Click ^^
This is pretty much just version two but inside a Firefly shell and hooked up with the actual trigger.
1. As the trigger is pulled approximately 1/2 way back, the valve shuts off the connection between the bladder and the tank.
2. The trigger pulls the tank valve open as it nears the end of its pull stroke.
3. As it is released, the trigger proceeds to close the tank valve, then the semi-auto valve, ensuring that no air is lost in the process.
This system is effecient for two main reasons.
1. It takes less time (however small) to complete the cycle than with a push-button valve and allows for a "true" semi-auto system.
2. It is much more effecient in terms of air conservation than having no valve at all and just simply pulling the trigger quickly.
The only glitch in this setup is the large amount friciton in the valve, resulting in a need for much spring force to push the valve rod back into its default positition. This makes it slightly difficult to pull the trigger, however this problem does not escalate as I pump it more, unlike the problem in V.1.
This is my current valve design:
(Wait for it to completely load. It's an animation.)
This is what prompted Version 2, a major improvement from my last design:
The way your "anti trigger" valve is set up, to press it you are directly fighting the air pressure. If you give up the back inlet and use the top as the inlet, you could have a longer metal rod through the middle, with another o-ring that stays on the far side of the inlet. Leave the hole in the back end open. Then it will be balanced.
This is the setup when it's not in any shell (V.2):
This configuration utilizes a Magstrike bladder, a Titan pump, and an AT3K tank.
I cut the bladder supports off of the Magstrike shell...
With 15 pumps, I can get off roughly 8 shots that are each extremely powerful. Only after about 8 shots do they start to get noticeably less powerful. In addition, there is absolutely no pressure build up exerted from the bladder into the trigger (unlike my previous design).
Version 3 VIDEO
Here is a link to the original topic I made concerning the Semi-Auto valve.
Please feel free to post with any questions, comments, or suggestions. Thanks.
Edited by cheesypiza001, 25 December 2009 - 10:02 AM.