Search found 7 matches
- Mon Jun 15, 2020 4:19 am
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Re: Ideas for biodegradable cannon-balls
Make molds with gap sealer silicon mixed with cornflour makes a putty B4 it sets.
Maybe this, wat put into Mold.
But it shrinks a bit I think.
Maybe this, wat put into Mold.
But it shrinks a bit I think.
- Mon Jun 15, 2020 4:21 am
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Re: Ideas for biodegradable cannon-balls
Here's make Mold.
- Mon Jun 22, 2020 10:17 am
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Re: "Sabotless" Semi-Automatic Shotgun Concept
I was having a bit of a think about this idea and it seems it could be greatly simplified and also made more efficient: https://i.imgur.com/Csm81PX.gif The piston itself becomes the hammer that opens an inline balanced valve. Sorta thinking out loud. Piston be generating air infront of it, as heade...
- Fri Jul 03, 2020 8:43 pm
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Re: Confused. Cylinder chamber to barrel ratio for compressed air.
If you have the same air volume and the chamber is 1/3 the volume, the pressure will increase by 3x. https://www.omnicalculator.com/physics/boyles-law Interesting to note. Apllying my reasoning, punch into calculator. As cylinder reduces in volume. increases the pressure to compensate for The loss ...
- Thu Jul 02, 2020 12:03 am
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Re: Brass as the foundation of a projectile?
How would hollow cylinder and sabot go.
Someone's thought about it.
Someone's thought about it.
- Fri Jul 17, 2020 12:30 am
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Re: Calculations related to pneumatic cannon.
Maybe Just do a vacuum cannon.
Be simplest.
Plunger, Aluminium foil for burst disk.
Use a ping pong ball or tennis ball.
Be more in the "high school" theme.
Safer for demonstration.
Just my two bobs.
Be simplest.
Plunger, Aluminium foil for burst disk.
Use a ping pong ball or tennis ball.
Be more in the "high school" theme.
Safer for demonstration.
Just my two bobs.