Stemless sear idea. Will this work?

[RavishingEddie]

Hey guys so I was looking at ZDSPB.com and after looking at the marker animations I had a tremendous brain fart and it basically revolves around a stemless sear concept for the mag.

Let me explain.
1)
In an Emag there is a horizontal stem that is used so it can be pulled by the Solenoid and activate the shot.

2)
On a regular mag like the Dmag,Pnuemag or automag there is a vertical stem that is pushed to activate the shot.

Problem:
This has been the standard always and we are forced to think around these fixed parameters.

Idea:
My Idea would be to place an actuator right under the part of the sear that is right below the On/Off pin.
This not only would activate the on/off pin directly, but also cause the sear to work as a seesaw and allow the bolt to be released by the sear with only 50% force from the actuator compared to using stems.

Benefits:
Sear stems can be cut off and valuable space can be created. Less dependancy on a powerful battery. lighter setup, faster activation of shots.

Problem;
I don't see enough space to do this in current frames but can someone let me know what they think about this? I can set up a drawing too if it helps

[Hilltop Customs]

Yes it can be done. I tossed the idea out there awhile back in this thread: http://automags.org/forums/showthread.php?t=236717 A few pages into the thread you can actually see some models of the frame with the actuator pocket in the rear of the frame.

Like you noticed the frames that are currently out there do not have enough meat on the rear to accomplish this. They actually could still be used, but you would probably end up with some actuator exposed and a pretty weak frame.

Moving the actuator wont lessen the force required unless you have a longer distance from the sear pivot. If I remember correctly the distances were about the same, so the forces will be about the same. The real benefit is better utilization of space, which is not really too much of a problem in pneumags, but with ep mags its a bit more of an issue.

[RavishingEddie]

Wow! I been away for so long that i never saw this post. The integrated MPA is exactly what I was thnking about. The frame rail idea is also very awesome and potentially solves the second thing I didn't like about mags. I don't like how close the ASA is to the frame, but that is just me.

Are they still planning on making this frame?

[Hilltop Customs]

Dunno, there was a follow up thread specifying different versions and asking which style people preferred, but IDK if anything came of it.

[luke]

I know it works because that is similar in concept to how I was doing the Spyder-Mag conversions. I was cutting off the sear arm and adding a "sear tripper" directly under the on-off pin.

[athomas]

Power required is directly related to force times distance. Pivot points change change the relationships with respect to each other. If you shorten the actuation distance, you need to increase the activation force. If you decrease the activation force, you need to increase the distance the force acts over (longer lever).

Solenoids also have another problem adding to this dilemma. They are very powerful for very short distances. As soon as the required pull distance is increased, the amount of power required to activate the solenoid skyrockets. Shortening the amount of distance the solenoid needs to activate the on-off does have some advantages. I suspect that shortening the solenoid distance gains more power than the increase in the power requirement due to the shortened distance.