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The issue isnt solely the arcing. Another issue that requires the mosfet is over heating.
Especially common with 9.6v large nimh and 11.1v lipos, sustained or even rapid burst fire can cause the trigger block itself to melt or deform. This is solved by using the trigger contacts as a relay control only and having the high current go through the mosfet. This also inherently reduces resistance since our mechanical triggers offer so much resistance.
This might be a good solution for aegs with microswitches though since they are also prone to arcing but cant use mosfets due to bounce.
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