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View Full Version : what's the deal with low pressure operation??????


nocaster59
03-05-2003, 06:23 PM
why does everyone always talk about low pressure, not doggin on it or anything, I just don't know ... what're the advantages and disadvantages?

ClamChowda
03-05-2003, 06:25 PM
It usually makes for a quieter marker and is better on effeciency.

Mante
03-05-2003, 06:32 PM
It depends, in the efficiency department. And it also depends on the gun you get. If you go beyond a certain point in low pressure, the benefits start deminishing as the efficiency goes down the crapper.

You need to find a good balance.

And you know, they make things stock the way they do for a reason. It's because it runs the most reliably at that setting. Do you think companies want to sell you a bad product?

xLiLHockeyFreak
03-05-2003, 06:32 PM
ya quiets a bit, helps a bit on chopping, mainly its more efficient, you get more shots out of your tank with the lower your psi is... problem is if u are too low and using a tank low on air, your marker may not perform well, or it may "sputter" or "burp" but you can simply turn up the psi, or if you dont want to mess with your regulator you can just get your tank filled

ClamChowda
03-05-2003, 06:37 PM
Originally posted by xLiLHockeyFreak
helps a bit on chopping
Disagreed. LP is no softer on paint.

Spartan 2
03-05-2003, 06:42 PM
All it basically does is make you be able to get more shots out of a tank. But I also bevlieve it makes the gun able to fire faster, but I am not to sure on that point.

ClamChowda
03-05-2003, 06:50 PM
No. It cannot make the gun cycle faster. In fact, if you get to low for your gun, it will not shoot past like 5-6 b.ps. Tried it on my friends fishy.

xLiLHockeyFreak
03-05-2003, 06:55 PM
Ya its true that you cant shoot faster on LP, and about the chopping, I read on Otter SC's site.

Ebonclaw
03-05-2003, 06:57 PM
*sigh* if your gun is set up right, you can shoot as fast as you can pull the trigger, otherwise, if you have a part that is not high flowing enough for your LP operation, rapid firing will starve the gun and it will sputter. Having said that, LP guns are generally a bit quieter, but the main factor is less recoil, affecting you directly.
And, by the way, LP is a side effect of efficiency, not the other way around.

ClamChowda
03-05-2003, 07:00 PM
Whoa ebon you just confused me...

xLiLHockeyFreak
03-05-2003, 07:14 PM
If you go LP, and have all the parts ok, and say for instance u lower your marker to 200 psi and its fine... the lower you go, the lower your ROF will be...so what I meant earlier was... the lower you go the lower your ROF will be........

Red_Storm
03-05-2003, 07:17 PM
Actually it gives you worse efficiency. Sure, the air is at a lower pressure, but to get it at a lower pressure a higher volume of air is needed. Hence the use of "high flow" valves and bolts. This means that more air is needed, hence worse efficiency.

There are two main advantages of low pressure.

1. Lower Operating Pressure this basically means how much pressure it takes to recock your gun and move te bolt. The lower this is, the less chance that when a paintball is half in the breech that the bolt will actually chop it. If you get it low enough, your bolt will stop on the paintball.

2. Lower Shooting Pressure. This means that the pressure coming out of the bolt is lower. In other words, more air. This causes the ball to be accelerated more gently, leading to less ball breakage in the barrel.

And your ROF isnt limited if you have a good regulator, valve, etc. Many of the fastest guns also are the lowest in pressure. (Impulse, Shocker, Matrix, Excalibur, etc)

xLiLHockeyFreak
03-05-2003, 07:28 PM
Id have to say it is much more GAS efficient, AND I didnt say it was the regulator which caused a lower ROF, I said the lower you go...

bluesboyk3
03-05-2003, 08:01 PM
I think I saw this somewhere, but I forgot....
I think going LP doesn't necessearily gonna drop the ROF. Think about this, the valve chamber/ regulator / whatever has 400 psi ready to shoot. BUt the gun fires at 200 psi, that means the valve has another 200 psi available to use, compared to a gun that fires 400 psi ( most stock cockers fires about 300 - 400 psi). So LP could actually help ROF unless somehow u change the valve volume so it could only hold 200 psi, and u're still firing at 200 psi, then u have a problem if u don't have high flowing parts,...is that what u're trying to say ?
Yes, I agree w/ some of the people here that going too extremely low is gonna sacrifice efficiency, cuz more air is needed. BUshmaster runs at about 200 - 300 psi and the cocking pressure about 80 psi (if i'm not mistaken) so they're operating at low pressure, but there's only a few case where it has terrible efficiency. But a Matrix runs waaay lower than that (i forgot the numbers), thus they're notorius of being gas hogs.
Well, that's my 2 cent, pls correct me if I'm wrong

xLiLHockeyFreak
03-05-2003, 08:04 PM
Sorry didnt have time to read that so i dont know what u said, but i might of been confusing, if you dont already know what im saying, what I meant is, if you try to go lower on psi than what ur gun is setup for, that will drop ur rof

tripnotemple
03-05-2003, 08:10 PM
I agree exactly with Red_Storm, LP is less air efficient. Also, like ebonclaw said, low pressure is the result of more efficient (in terms of gun cycling/operation) high flowing internals.... low pressure does not create efficiency.

Mrfxiitxx
03-06-2003, 03:03 AM
Personally I think LP is one of the most misunderstood and over hyped or over critzied things it piantball.

Low pressure does not automatically equal effeincy. Typically if you go for effency(on a high pressure gun) your operating pressure will be lowered.

LP is not always less effecient, auto cockers can get 1300+ shots off a 68/3k running at 300 PSI, impulses can get around the same with an LPR and they run around 220 PSI valve pressure.

But for example my impulse I run at 180 PSI and I dont have an LPR and I get about 900-1000 shots on a 68/3k tank roughly but if I turn my pressure down to 135(lowest it will go) I'll only get about 400-500 shots on the same tank.

As for ROF being slower, maybe a little bit but not enough to count, 20bps(max of impulse boards) without shootdown is good enough for me!!! Really if you have a high flow design low pressure does not slow your ROF down at all.

It does make your gun noticably quiter and slightly easier on paint. It also reduces the amount of kick you have though that can be changed as well by changing the weight of your hammer and bolt.

Mr.Fixitxx

bluesboyk3
03-06-2003, 07:57 AM
Good point !! :)

xLiLHockeyFreak
03-06-2003, 09:07 AM
Originally posted by Mrfxiitxx
Really if you have a high flow design low pressure does not slow your ROF down at all.

Mr.Fixitxx

If you go lower it will....

Anyways, I have a pretty low pressure Spyder, it does get me more shots than if I were on a Spyder's stock 800psi obviously....

Zujin
03-08-2003, 09:51 AM
Just becuase the gun runs at a lower pressure doesnt mean less bps. Also, u can get more shots out of a tank if and ONLY if it is setup right. the lowerst operating pressure is not the most effecent. Most of the time, for a blow back marker, somewhere between 200 and 300 psi is the most effecient. that is where u get the more shots out of ur tank.