I'm building something similar for military training loosely based off this idea. Because of the higher PSI require to safely simulate an explosion (rather than pyrotechnics) I used a brass electric sprinkler valve. 24 volt. Now, it will work with a motorcycle battery and pressure plate. But (using quatumfire remote cues, 12 volt I believe) It's not enough power on my remote cue to initiate. Any ideas or recommendations?