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View Full Version : The REAL way around the SP patent...


ButterfingersAO
03-22-2004, 02:36 AM
http://www.automags.org/forums/showthread.php?s=&threadid=130476

WOW...

Jack & Coke
03-22-2004, 02:55 AM
haha butters, I beat you by 19 minutes ;)

http://www.pbnation.com/showthread.php?s=&threadid=451948

heezlebub
03-22-2004, 03:24 AM
lol

slapshot54
03-23-2004, 10:04 PM
wow 750 psi...

thats mad kick there from what i see...

Jack & Coke
03-23-2004, 10:36 PM
LOL you obviously don't understand how a mag works...:crash:

slapshot54
03-23-2004, 11:15 PM
yea i do understand... its like one of the simplest guns out there. and i know they have a lot of kick compared to LP guns cuz i have shot mags before

Jack & Coke
03-24-2004, 12:19 AM
So tell me... how much pressure (psi) do you think the ball sees at the moment the gun (mag) is fired?

(on ball pressure)

slapshot54
03-24-2004, 08:44 AM
probably around 400 psi but the force of the bolt is moving at 750 so it doesnt really matter...

ButterfingersAO
03-24-2004, 09:51 AM
Wrong...

Around 60 PSI on ball pressure...

http://www.automags.org/forums/showthread.php?s=&threadid=34429

400-500 Chamber Pressure

Every thing is pre-regged by the back half of the valve before even entering the firing portion of the mechanics.

The back half of the mag does the same job as a vert reg on any other gun.

So there is really no possible way that the bolt could see 750 psi.

If you were holding the gun like that it would kick too.

The LX mag with the 1.1 oz superbolt has less kick than the viking that I OWNED a year ago.

The mag you shot was probably a Level 7 with a much heavier bolt.

Jack & Coke
03-24-2004, 11:32 AM
Dang butters, you beat me to it this time :D

Yes, Butters is correct!

slapshot54, you are wrong.

"on ball pressure" is only around 60 psi, not 750 psi or even 400 psi:

http://www.automags.org/forums/attachment.php?s=&postid=394614

LvL 10 mag = no kick due to reciprocating mass.

There very little or no detectable kick when dry fired.

However, if you fire a ball, there is a little bit of "recoil" due to the very little weight of the gun.

Add a SS barrel and some weights to the gun, so that it will be as heavy as a Matrix, and you will notice much less "recoil".

I guess we pretty much squashed this inaccurate statement:

Originally posted by slapshot54
wow 750 psi...

thats mad kick there from what i see...

:crash:

Rick_James
03-25-2004, 01:41 PM
so where does the extra 790psi go? It sure isnt vented...:crash: :crash:

Jack & Coke
03-25-2004, 04:56 PM
gee I wonder what regs are for... :rolleyes:

Usually anywhere from 650-800 psi goes into the mag from the air source. Then it gets regulated down to around 400-425 psi in the dump chamber.

Since it is a dump chamber design, and not a timed valve design (like most other guns which reply on how long the valve is held open), as the bolt is released like a cork, the input into the dump chamber from the main reg is closed off.

This means as the pre-measured (dump chamber) air expands and escapes, pushing the bolt forward and compressing the main spring, the pressure which was once around 400 psi in the chamber drops off.

If the dump chamber did not close off it's input as it fires, then the peak on-ball pressure would be much higher.

cali141
05-13-2004, 10:36 PM
Does anybody know when this will come out? I was originally planning on buying a tricked impy, but now that i see this... I cant decide which!! Whatever costs less and requires less maintenance, ill buy. I dont know much about mags, but i heard that the mechs are just as reliable as tippmans. However, the imp i might get has equilizer, otb frame, and just kick*** everything else, all for like $725. If the trigger frame itself goes for about $300 as said, im passing on the mag.

ButterfingersAO
05-13-2004, 11:29 PM
Originally posted by Jack & Coke
gee I wonder what regs are for... :rolleyes:

Usually anywhere from 650-800 psi goes into the mag from the air source. Then it gets regulated down to around 400-425 psi in the dump chamber.

Since it is a dump chamber design, and not a timed valve design (like most other guns which reply on how long the valve is held open), as the bolt is released like a cork, the input into the dump chamber from the main reg is closed off.

This means as the pre-measured (dump chamber) air expands and escapes, pushing the bolt forward and compressing the main spring, the pressure which was once around 400 psi in the chamber drops off.

If the dump chamber did not close off it's input as it fires, then the peak on-ball pressure would be much higher.


Exactly... All that pressure is turned into a whole lot of volume... Instead of flowing volume the mag flows low volumes at high pressures.... It is turned into high volume at the very end. It is the reason why it recharges the fastest.

Reference the Ideal Gas Law:

PV= NRT

In a fixed volume system (such as a mag dump chamber) If the volume increases the Pressure decreases in an inversely proportional manner.

In the case of the mag by the time the gas expands to where it propels the ball it is measured at a peak of 60 psi.

Tedrzz
05-16-2004, 02:09 PM
Lol. I don't see the logic behind people thinking the bolt pressure is 650 psi. I know absolutely nothing about Automags, but it is common sense to think that 650 psi bolt pressure would liquify any ball that was placed in the breech.