Quote:
Originally Posted by Azuki
For my gun the valve spring presses the valve closed. The BB pressing agasint my FV is what keeps the passage open. If the FV spring was too strong it would simple close the valve and push the BB past the hop up causing a roll out. I'm not entirely familiar with TM's design like I said, but I was going on the assumption that they used similar systems.
If the spring is located on the BB side of the valve, then yes it should keep the valve open.
:P My mistake for thinking the whole work is Magna BB
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I'm not sure how WA guns work - I'm not too familiar with them, but Hi-Capa floating valve springs force the valve OPEN to direct gas in to the barrel. Once the projectile leaves the chamber, a negative pressure exists within the cylinder, causing the floating valve to shut close from the pressure of the gas. Once closed, the gas is then redirected out the back against the pistonhead which forces the slide backwards to begin the blowback cycle.
My understanding was that almost all modern GBBs worked on this principle. I'm surprised your WA doesn't.