closed bolt Tippmann

think of the anti-chop mod with the spring, but the rear bolt is not holding the front bolt back. once the sear trips the rear bolt & fires the gun, the linkage arm (this is where I havent really thought how to make it work) will catch the front bolt & pull it back. once its all the way back, it will release it, the spring will push it back forward chambering a ball (hopefully).
any thoughts how I could make this work?

Viva La Revolution!!!!!!!


Edited by tallen702 - 15 April 2007 at 6:07pm

I don't see what sort of benefit you'd get from this. The best thing about a 'closed bolt' system is that supposedly you'd be able to fire a shot without having a heavy bolt rock forward first, in this concept, the rear-bolt is still going to be 'open' and it's going to affect 'accuracy' a lot more than having the front bolt 'closed'. I personally see this as rather pointless.

 

an94, it's just not that simple.

yeah, I thought about it later on & the front bolt would cycle too fast anyway.

There's still a hammer that has considerable mass (probably the same, if not more than the '98 hammer) falling forward in an autococker. something has to open the valve after all. Now, Autocockers are inherently set up better for low-pressure operation due to their distinctly modular construction. You don't need to go out and buy a whole kit just to go LP, you already have a reg, just swap out springs and eventually move to a higher-flow valve. The energy with which the mass of the hammer is thrown forward or backward governs the "recoil" effect that you associate with a reciprocating mass in a paintball marker. The settling of the ball in the chamber means that the ball isn't in motion until the propellant hits it. Giving you optimal conditions for the ball to fly true. An open-bolt system doesn't give a ball a chance to be in a stable state before having the propellant it it as it is in motion from the moment the bolt and hammer linkage starts forward. Thus, the ball is "bouncing" in the breech as the airflow hits it which can cause unwanted turbulence and inconsistent airflow around the ball itself. The benefits of settling are minimal at best, and as I said, when rapidly firing, the chambering and firing sequences in an autococker are so close, the ball doesn't have time to stop moving before the air hits it.