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Heavy Bag Controlled Explosions

Triggers fuel air explosions whose size is dependent on how hard the bag is hit
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The punching bag features touch sensitive sensors that send varying voltages to the trigger mechanism dependent on how hard you hit them with your heavy bag gloves.

A safe distance away, an upward pointing cannon has carbureted fuel shot into its combustion chamber triggered by your hitting the bag. Heavy hit, large explosion, light hit, small explosion.

A smaller version could just have the explosions come out of the top of bag itself, but I'm thinking to get the effect I'd want, these explosions should be several hundred feet in diameter. Fireballs should rage from house size for light punches to city block size fireballs for haymakers.

Whatever the size, every punch would cause an explosion. This would be rad.

doctorremulac3, Apr 06 2016

Fiery columns https://youtu.be/6rqaYe31LMo?t=42
See annotation. [TomP, Apr 08 2016]

[link]






       // A safe distance away, //   

       No.   

       // explosions should be several hundred feet in diameter. Fireballs should rage from house size for light punches to city block size fireballs for haymakers. //   

       That's not an "explosion" - or rather, not a detonation. A fireball, as beloved of Hollywood, is an over-rich fuel mixture burning in air. A lot of light and heat, but essentially just Act V Scene 5.   

       Pastry witheld pending a greatly increased risk (or better, certainty) of prolonged hospitalization for users.
8th of 7, Apr 06 2016
  

       Plus, it launches cats.
doctorremulac3, Apr 06 2016
  

       Bun awarded.
8th of 7, Apr 07 2016
  

       For full effect, I'd want a pretty tiny delay. I already feel a bit odd using guitar amp modeling equipment, and that's supposed to be in the 5-15ms range. I'd want to punch, and see an immediate boom. Trouble is, the explosions are going to have to be distant.... the speed of sound is against you there.
bs0u0155, Apr 07 2016
  

       You could have large amplified speakers that relay the explosions via microphones at the explosion site directly to you.   

       Then you'd have an echo effect, original explosion that you'd hear immediately coming through cables to your amplification system and explosion delayed by the speed of sound coming to you through the air.   

       Playing percussion instruments through echo devices are very cool.
doctorremulac3, Apr 07 2016
  

       It's like those wonderful effects you get when an A-10 does a gun run, from the ground perspective at least. You see the thing be destroyed, then you hear the thing being destroyed, then you hear the gun firing.
bs0u0155, Apr 07 2016
  

       Spraying and igniting the fuel will also cause latency.
notexactly, Apr 07 2016
  

       // wonderful effects you get when an A-10 does a gun run //   

       Oh, yeah.... and when a GR-7 dumps all its CRV-7's at once on a single target... shock and awe....
8th of 7, Apr 07 2016
  

       //A fireball, as beloved of Hollywood, is an over-rich fuel mixture burning in air.//   

       Very true: I watched a pyrotechnitian setting a pair of those up once. He dug two small holes in the ground and put a small black powder charge in each. On top of those went a few chunks of compressed cork and gallon petrol can and voila... 40ft tall fiery columns with obvious bits of 'stuff' flying from the base. [link]
TomP, Apr 08 2016
  

       It's better to slice the top off an empty (repeat EMPTY) propane or butane tank- the 11 to 15 Kg size- and put a B.P. maroon in the bottom, running the firing line over the lip. Then place a heavy-gauge polythene bag over the maroon and pour in a few, or not so few, litres of gasoline and zip-tie the top to prevent any of those precious hydrocarbons escaping prematurely.   

       By all means fill any remaining space in the bag with absorbant, flammable rubbish.   

       The walls of the tank contain the force from the lift charge and greatly improve the height of the flame, much more like an H.E. shellburst.   

       Stand well back, though.   

       It's worth attaching a length of thin steel cable to the outside of the base of the tank - that way, when you have to make a run for it (because the sirens are getting closer) it's possible to drag the still-hot tank behind you when heading for your vehicle. Those things have serial numbers, and it's not wise to leave evidence for them to find.
8th of 7, Apr 08 2016
  
      
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