Low Preasure??

[AcemanPB]

After reading alot of the post and how physics can be used to state that technically all paintballguns shoot the same and what we really base "acuracy" on is consistency.
(two paintballs leaving muzzel at same fps have same trajectory)


i get all that


but.... how does low preasure guns play into this, i've seen guns advertise that they can opperate on a lower preasure. now how can a marker shoot with the same fps using less air preasure??

also anyother info on lp guns will also be helpfull

[Miscue]

There is a minimum amount of energy needed to propel a 3 gram ball at 300fps. Higher pressure = less volume. Lower pressure = higher volume. It all works out.

[AcemanPB]

is one better than the other?

i've heard that lower preasure means less turbalance as the ball leaves the barrel

[Predater]

a mag has 60psi behind the ball. its prety low. all that is good with low pressure is the ease of the bolt on the ball.

[Poseidon]

read tom's tech tips on ressure behind balls, and barrels too!

[PyRo]

Really rought example here. The number used are not the same, as in the actuall paintball gun, but used only for referance because they are whole number and easier to work with.
Lets say you have a 1cu air chamber with 400 psi in it. You fire the marker, and it begings pushing the ball down the barrel. As soon as it begins pushing the ball that pressure is decreasing. Lets say you have a 12in barrel and 1in of barrel is equall to 1cu. (This is not accurate, using only for an example). Once it gets 1in down the barrel you now have 2x as much space, or 200psi behind the ball. Another 2in and you have 100psi behind the ball. Another 4in and you have 50 psi behind the ball. This keeps going on untill the ball leaves the barrel. You also loose air to the porting, and through the powerfeed. By the time it actually leaves the barrel their is very little pressure behind it.

[AcemanPB]

makes sense, but then in reality wouldn't all guns "technicly" be low preasuere?

[cphilip]

YEP! But then there is low an then there is lower. Its all someones definition of what is "Low Pressure". Most folks are talking operating pressure of the internals when they say this. Without reguard to "on the ball" pressure or any other factors. And without reguard to wether some of the input pressure to operate the internals is retained or wether it is all dumped on each cycle.