Slick, on Mar 19 2006, 09:57 PM, said:
Egrips dont use solenoids. Egrips dont regulate airflow in an A5. they just make the trigger mechanism electronic...notice how no part on the trigger regulates airflow through the marker.
i agree that the concept of a bulpup design would be cool, but only on paper. in reality, it is in fact an engineering nightmare...the the trigger-bolt interaction would need to be completely redesigned. from your design's you're proposing to just simply move the trigger up 4-6 inches from where it is. however, if you did do that, you would need to change how the trigger releases the bolt...
By the way, I noticed back in January that -Snake- suggested a shroud kit for the A-5 based on the French Giat FAMAS rifle, which is another bullpup design:
oh, and he suggested a shoud kit, not a full on conversion kit from A5 to bulpup...
First and foremost, and with due respect, Slick, you are 100% wrong
about E-grips not having a solenoid. Tippmann's own promotional material on the E-Grip reads as follows:
Intoducing the All New E-Grip for the Tippmann A5 Paintball gun -- The E-Grip system uses an electronic control board to activate a solenoid. When activated, the solenoid disengages the sear, which in turn fires the marker...
Just take a look at your own photo illustration. What do you think the two cylindrical components immediately below the battery are? The more rearward of the two is a capacitor, and the one in front that trips the armature pin (which, in turn, trips the sear) is a solenoid
. Here's a link to an article on the E-Grip on the Special Ops website which (correctly) refers to said component as such: http://www.specialopspaintball.com/article...mann_e-grip.asp
(I don't know that I ever said anything about E-Grips regulating air-flow (any more than any trigger device on a paintball gun indirectly "regulates" airflow by controling when the main spring forces are released, the valve opens, and the gun shoots) so I won't address that comment here...)
As for redesigning the trigger-bolt interface, it would not need to be "completely redesigned" in order to move the grip frame forward in a bullpup design; rather, the action of the trigger and sear would simply need to be TRANSLATED to a parallel interface where something analogous
to the sear catches the bolt inside the receiver. This is not a new concept.
When you accelerate in a car or on motorcycle, you don't reach down and open the butterfly on the carburetor by hand, do you? Of course not. You mash down on the accelerator pedal or twist the throttle, and control the butterfly by a mechanical and/or cable linkage
All I'm talking about for a bullpup paintball gun is a super-simple version of the same thing, a piece of rod that translates the motion of the sear in the forward grip frame to an identical sear moving in synchronized motion in a position appropriate to interface with the receiver internals.
I can swing my arm and hit somebody with my fist, or I can take a step back, swing my arm, and hit somebody with a baseball bat. Six of one, and a half dozen of the other.
Once again, not exactly rocket science here. Sure, there would be some kinks to work out in development on a bullpup kit, but the idea is sound and probably fairly feasible in practice. After all, real
bullpup firearms use linkages to translate their trigger action back to the receiver...
Last, regarding the FAMAS, I didn't say -Snake- had suggested a conversion kit rather than a shroud, only that the FAMAS was indeed another well-known bullpup-configured gun from which to draw inspiration for a project like this one.
This post has been edited by Lil' C: 20 March 2006 - 05:47 AM
Sigs aren't actually allowed on the Special Ops Forum, so I don't have one.