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[pinhead52]

OK, I was reading through the LGLF's web site and saw your work on a semi-auto valve, and it looks awesome. I saw that you don't know what the blue part should be, which got me thinking. First, I had to figure out the problem, and if I got this wrong feel free to disregard the rest of this. It looks like it has to be something that will pull back a little before actually releasing the valve, otherwise you could make a straight track from the air source to the barrel, depressurizing the whole thing into one big shot (a homemade titan...). Your ideas lead me to believe that you would solve this problem with something that goes into the barrel a fraction of an inch, but if this worked you'd probably have built a working valve already.

My first idea was to use something flexible. You've got air pressure working for you, so something rubber would hold onto the barrel until it was pulled completely off, well after the trigger part (brass) was far enough back to block air flow. Then the air pressure that's only in the trigger part would push it back over the barrel, and since it's flexible it would push back into it until the air could re-load the "expansion chamber" (sorry, making up terms).

You've probably already thought of this, but would you try using one of those rubber springy things? The little quarter machine poppy domes would work perfectly, if you could get them fastened well.

::edit:: BLAST! I could swear I put this in homemades... can I get a thread move please?

Edited by pinhead52, 11 August 2005 - 01:02 PM.