Using a small solenoid to trigger a co2 hammer valve Answered
Hello, I have a question that is integral to the design of a project i'm making.
I am trying to make an airsoft gun. For a power source, I am using a 12 gram co2 powerlet. My main problem is the trigger mechanism. Since I want the design to be semiautomatic with no blowback, I decided on an electric trigger to avoid the long trigger pull associated with mechanical triggers. My valve is taken from an airsoft pistol magazine and is pretty small. It is operated by having the rear "button" of the valve hit with a simple hammer, which moves the valve pin and releases gas into the barrel. I want to use a small solenoid in place of the mechanical hammer. When activated, the solenoid's push end would snap forward and hit the valves "button."
I was wondering if this is possible on any kind of smaller power supply? It doesn't seem like the valve button needs much more than a tap to dump a good amount of gas. All the projects i have seen like this are fairly large scale, for larger airguns, and they had to use large unreliable power supplies. I would like to keep this whole thing as lightweight as possible.
I was thinking that i could use a simple switch or circuit that would just dump some voltage into the solenoid for just a fraction of a second, to fire one shot for each trigger pull.
Would this solenoid work? http://www.adafruit.com/products/413
Also, the valve I am using is tiny, about an inch long. The "button" that needs to be tapped to release gas is about 6 mm in diameter.
Is there any way to calculate the exact amount of force needed to trigger the valve?
Does anyone have any advice for me?