Friday, September 14, 2012

Rough trigger mechanism design

     I am considering using a trigger mechanism similar to the one in this picture. It will consist of a rotating trigger (the blue piece) and a spring-loaded falling sear (the grey piece).
     The sear will have two springs applying a downward force on the it. When the trigger is at rest, the strength of the trigger spring will keep the sear in place. As the bolt moves the plunger back, the plunger will push the sear down until a notch in the back of the plunger (the orange part) moves over the sear and the trigger spring pushes the sear up into the notch. As the trigger is pulled, the sear springs will push the sear downward and ultimately out of the notch, releasing tension from the plunger spring. My main concern with this system is that it will likely be sensitive to spring tensions and a delicate balance will likely be necessary. If anyone has an idea of how the spring strengths should relate to each-other mathematically, please leave a comment detailing such.

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