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Simple timer for IEDs

  1. #61
    We'reAllBrownNosers African Astronaut
    Originally posted by Narc About 15/20 minutes max


    How about you just stop complicating things that don't need to be complicated.

    https://www.gogofireworks.com/gogofireworks/10-feet-green-slow-fuse


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    Nothing complicated about it. It'll give you a lot more time than a fuse alone. Use a water bottle like I said, not an ice cube, and it will take several hours to close, as the ice between the close pin is more insulated from the thermal energy.

    Buoyancy timer is better though, not temperature dependent, it can be fine tuned. It's easier to set up than a lot of things, and you can adjust it from an hour to several hours, even days depending on what you put liquid in, how much liqud there is, etc.
  2. #62
    Narc Space Nigga [connect my yokel-like scolytidae]
    Also forget that broken lightbulb shit and get some ematches. You can recover one or two from unused airbag systems on scrap cars.


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  3. #63
    ;

    Originally posted by We'reAllBrownNosers Nothing complicated about it. It'll give you a lot more time than a fuse alone. Use a water bottle like I said, not an ice cube, and it will take several hours to close, as the ice between the close pin is more insulated from the thermal energy.

    Buoyancy timer is better though, not temperature dependent, it can be fine tuned. It's easier to set up than a lot of things, and you can adjust it from an hour to several hours, even days depending on what you put liquid in, how much liqud there is, etc.

  4. #64
    We'reAllBrownNosers African Astronaut
    Originally posted by Narc Also forget that broken lightbulb shit and get some ematches. You can recover one or two from unused airbag systems on scrap cars.


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    In what way are ematches any better as an ignition source?
  5. #65
    Narc Space Nigga [connect my yokel-like scolytidae]
    Originally posted by We'reAllBrownNosers In what way are ematches any better as an ignition source?

    Reliability


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  6. #66
    We'reAllBrownNosers African Astronaut
    Originally posted by Narc Reliability


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    How in the fuck do you figure a light bulb filament isn't reliable? Parkinsons? are you going to drop it and break it?
  7. #67
    Narc Space Nigga [connect my yokel-like scolytidae]
    Originally posted by We'reAllBrownNosers How in the fuck do you figure a light bulb filament isn't reliable? Parkinsons? are you going to drop it and break it?

    They are quite delicate. Can you be sure the filament inside hasn't broken by the time you go to use it?


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  8. #68
    We'reAllBrownNosers African Astronaut
    Originally posted by Narc They are quite delicate. Can you be sure the filament inside has broken by the time you go to use it?


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    Yes, I can be sure it hasn't broken.
    Schematics of an electrical igniter connecting to a fuse
    Electric matches consist of two parts, a bridgewire and a pyrogen. The bridgewire is a heating element, typically in the form of a loop or coil of thin wire, which is encased in the pyrogen, which is a quantity of readily ignited pyrotechnic initiator composition. If the pyrogen is sufficiently conductive, it can act as the bridgewire as well. Electric matches also come with provisions for attaching an electric current source, and they may be provided with a protective cover and/or a means to attach them to the device to be ignited.[1][2][3]

    To operate an electric match, a source of electricity of appropriate voltage and current is needed to provide current to the match. When sufficient electric current is passed through the bridgewire, the resistive heating causes the element to rise above the ignition temperature of the pyrogen, and the pyrogen begins to burn.[1][3]

    Tiny ass filaments like a chr1stmas light bulb are delicate, brake light bulbs really aren't.

    The only advantage of an ematch is that it already has the pyrotechnic mix and it's resistance wire is in a fixed position already. If you have trouble putting a filament or any other resistance wire in a fixed position with a pyrotechnic mix, you probably shouldn't be messing with pyrotechnics to begin with. ematch is just lazy. I mean, not a bad idea really if you feel it's easier than putting a filament or resistance wire of some sort into a pyrotechnic mix in a plastic tube or something, but otherwise, blah
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