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Old 12-04-2009, 08:04 PM   #1 (permalink)
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Gas efficiency

Automags are well known for being gas hogges. So what prevents automag users from putting on a lighter bolt spring and lowering the reg pressure? I have to be missing something .
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Old 12-04-2009, 08:15 PM   #2 (permalink)
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Automags generally don't work well below 800 psi
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Old 12-04-2009, 08:21 PM   #3 (permalink)
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Automags generally don't work well below 800 psi
I'm assuming your saying input pressure right? Doesn't the reg knock the output to around 600 psi so that (back in the good old days) the marker could still function on C02 in cold weather.
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Old 12-04-2009, 09:07 PM   #4 (permalink)
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IIRC from Tom Kayes automag video, the regulator drops the operating pressure to below 600 psi (EDIT: 450-500 psi, see link below). I was able to fire my automag in my backyard earlier this week using a tank that had an output of ~600 psi. Not sure what the velocity was, but it was above 200FPS at least.

http://www.youtube.com/watch?v=vehPc7vuK20#t=6m40s
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Old 12-04-2009, 10:44 PM   #5 (permalink)
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I believe the biggest problem is the air passage between the regulator output and the air chamber. You start lowering the pressure down too far and you will get shootdown because it takes too long to repressurize the air chamber. The RT valve solved the issue by bumping the up the pressure through the air passage. In a way the air chamber is part of the regulator.


I think you can do a low pressure automag with a lighter bolt spring to get better effeciency, but you would have to rework the entire system(larger on/off pin, air chamber, possibly even a larger diameter bolt shaft) in order to get the same reliable operation.
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Old 12-04-2009, 11:29 PM   #6 (permalink)
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If you lower the pressure to begin with then you can function with thinner material and larger air pathways.

But again like you said ta2 that involves a complete work over of the marker.

AGD you have an amazing product. Dont get lazy, keep innovating!!!
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Old 12-04-2009, 11:41 PM   #7 (permalink)
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The older Automags ran at a higher internal pressure with a smaller dump chamber and they were more efficient.The lowering of the pressure was done to reduce ball breakage by lessening the impact of the bolt.
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Old 12-05-2009, 12:25 AM   #8 (permalink)
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Quote:
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AGD you have an amazing product. Dont get lazy, keep innovating!!!
Umm... you're a bit late to the party.
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Old 12-05-2009, 12:41 AM   #9 (permalink)
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Umm... you're a bit late to the party.
I know but one can hope.
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Old 12-05-2009, 01:01 AM   #10 (permalink)
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