gas hog... any ideas

[MinMag415]

ym mag with a retro valve eats up air. i have an aci bulldog 68/4500 tank... and it goes through it pretty good. i know mags are suppose to run off of high pressure... but i have seen em with a regular valve run off of liek 450psi. is ther any way to add an inline reg ro something to turn the pressure down and save air. or if anyone has any other ideas on how i can tune my gun to save air help me out please.

[Havoc_online]

the retro valve needs at least 600psi to lock and cycle.

[mykroft]

Your problem is mst likely a very bad paint/barrel match. Taht's the usual cause of horrific efficiency on a Mag. The RT and Automag valves want at least 600psi input, since they ahve an internal reg. Adding an inline reg will only reduce performance, since all it's going to do is restrict airflow. teher is no way to improve efficiency on any gun simply by adding an inline reg.

[a_defect]

Get a barrel that doesnt have much porting. Like a Lapco or a BOA. Less porting usually means better efficiency. Oh, and like mykroft said, make sure your paint-barrel match is good.

[puckmaster]

A second regulator will only "starve" the gun for air. Also good paint to barrel match and less or no porting in barrels will also make it more efficient.

[ANTi]

yo jay...its jeremy....yea i just got a mag..well its on the way...but to solve your problems i think what you should do is just give me the retro valve and i'll give you my 68 classic valve...and then you'll have no more troubles......check out my sig...

[MinMag415]

yeah i might trade you lol. cant wait to see your newe mag and show you my paint. see ya at the fields.... and we will all shoot billy.

[psycoclown414]

hmm

yea well, i have an RT pro with a 68 classic valve already.. so beat that jay. the same thing thats up with your trigger happens to mine too.. it happens when i don't pulled it at the right pace.. you can't pull it slow, it has to be quick bursts. lets get billy te kid alright. jay.. shirts and skins..? billy vs. all.. lol

[PyRo]

The mag will use the same amount of air regardless of the input pressure. The mag has a built in reg, which tanks the pressure down to about 450psi. Therefore if you input 450psi, and 1000 psi it will use the same amount of air. 450 psi will cause shootdown though, the mag typically functions best with an input of 800-900.
As for your consistancy, that will vary with a great many things. Most likely nothing internal on your gun is causing this loss, unless you have some type of leak somewhere.
Paint-Barrel match
Big paint in a small barrel will smoosh the paint, making it harder to get though the barrel, therefore requiring more air to push it though.
Small paint in a large barrel will allow air to go around it, therefore causeing a loss of air, requireing more air once again.
Both of these situations can also result in an erratic velocity, not that they always do however. You can test this by dropping a ball into the barrel, and blowing it though. If it rolls right through the barrel is to big, if your face turns blue trying to get it though the barrel is too small. It should take a little pressure to get it though, the ball should just be snug in the barrel.
Porting
Porting in the barrel will also cause a loss of air, requireing more air to get the ball though. Say your drinking out of a straw (barrel). How much pressure does it take to get the liquid though. Now, put holes (porting) in the straw and try to use it. It takes alot more effort to achieve the same result. Therefore porting will decrease gas efficancy. (I have to give Miscue his credit for the straw example).
[B]Barrel Leangth[\B]
The longer your barrel is the more air will be necessary to push the ball though it. We have 2 barrles, and 8in, and a 16in. Lets say we start out with 200psi in 1 square inch. (note these are not actuall pressures or areas, i'm just using them for referance). Now the ball moves another inch down the barrel, the pressure is down to 100 psi. Another 2 inches, 50 psi, another 4 inches, 25 psi. The ball has now left the 8in barrel. Meanwhile in the 16in barrel, another 9in brings it to 12.5 psi. Uh oh, only half the gas, looks like to get that same 25 psi we need to increase the initial velocity, and use more gas.

The ideal barrel is slighly snug on your paint, and is 11.5in with no more than 1.5in of porting.

[psycoclown414]

cool

this guy knows his stuff.. so Pyro.. what would you think would be the best barrel to buy.. not an AA? or tear drop.. they both have lots of porting. lmk.. thanks