Vlanikgun

[tromic]

Pressure is 49.74 atm when the sperargun is loaded with the spear, right? What do you think, what energy of the spear is sufficient to neil the fish, 6J...10J?

 

[Vlanik]

1j - 1kg

 

[tromic]

1j - 1kg

?? 1J = 1N*1m
Your spear of 0.5 kg would have 1 J if you were let it to fall down from the hight of 0.2 m.

 

[Vlanik]

and punches a fish weighing 1 kg., so says wound ballistics

 

[tromic]

I wanted to test it but newer did a test. But this is an interesting estimation, 3 kg fish - 3 J, 10 kg -10 J...? Might work if the fish were not hit in a head or in the spine but in a flesh.

 

[Vlanik]

Correctly. It's about defeat. To hit a person weighing 80 kg, the energy of a bullet is 80 joules.

 

[tromic]

That is similar to cooking meat in oven, how many kg of meat the same number of ours.
I think that way of estimation of necessary number of J is not the best in case of spearfishing. What is missing here is the speed of the spear. I believe the speed should be at least 7-8 m/s. Only energy is not enough.

 

[Vlanik]

Well, why guess ... Do it and check it ... You wondered in the "Sandbox" for 10 years ... 187 pages were written "How to make Pistonless guns ... And where are these guns? They didn't do anything ...

 

[tromic]

Well, why guess ... Do it and check it ... You wondered in the "Sandbox" for 10 years ... 187 pages were written "How to make Pistonless guns ... And where are these guns? They didn't do anything ...

To be more clear, for 1 kg fish, 1 J would mean 0.5 kg spear having speed 2 m/s. That speed is so low that any live fish would avoid the spear.

 

[Vlanik]

Will you ever learn to turn on your brains?

 

[Vlanik]

I repeat for the especially gifted