sure, but there are some limits....
I thought that maybe exist some calculations to do....
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jackssmirkingrevenge
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Oh there are a lot of calculations you can doRJB INDUSTRIES wrote:I thought that maybe exist some calculations to do....
but you need to know what you want to penetrate, how far, what sort of trajectory you want, projectile material, target material - on a more intuitive level, it is also helpful to look at real world examples.For example, in a pneumatic a heavier projectile will always give you more muzzle energy, but at the expense of velocity.
Let's take a GGDT example.
As you can see, we get the highest energy from a 50 gram projectile, but at such a low velocity hitting a target beyond point blank range would be almost impossible.
The 0.25 gram projectile gives us the highest velocity, but also the lowest energy. Assuming all the projectiles are the same size, it will also lose velocity the fastest due to the lower sectional density.
In general, the two gram projectile in this case seems to offer the best compromise between energy and velocity.
The above assumes consistent shape and size, but obviously these are significant variables too.
Rather than projectile weight independently, what you should be looking at is ballistic coefficient.
This takes into account weight but also projectile shape and cross sectional area. You then have to measure that against what sort of velocities you're getting from your particular launcher.
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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I want install a 12 V battery in a combustion on to fill the fans, i am not founding one on ebay, the one I need mustn´t be to heavy or too big....
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jackssmirkingrevenge
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Here you go, but it won't last terribly long...RJB INDUSTRIES wrote:I want install a 12 V battery in a combustion on to fill the fans, i am not founding one on ebay, the one I need mustn´t be to heavy or too big...
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Petitlu can I charge it after use...? Is there that possibility?
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What is the input in this charger?
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sorry, this charger is designed for entry-12v ... 
The best :
http://www.ebay.com/itm/3S-iMAX-B6-AC-B ... 273wt_1185
The best :
http://www.ebay.com/itm/3S-iMAX-B6-AC-B ... 273wt_1185
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I need a simple one, may be i am gonna do the circuit....
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wyz2285
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Cool, looks exactly like you planned. Your barrel is a .50 rifled barrel right? Where did you got one this long?
CpTn_lAw wrote:"yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? "
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jackssmirkingrevenge
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hectmarr wrote:You have to make many weapons, because this field is long and short life