Twin Hammer Air

Twin Hammer Air

Electropneumatic paintball marker

History and basic operation

The origin of the electropneumatic paintball marker is the subject of a patent dispute, but is generally acknowledged to have happened more or less simultaneously with the introduction of WDP's Angel and PneuVenture's Shocker, marketed by Smart Parts, both in 1996. The markers were operated differently; they were similar only to the extent that they both make use of one or more microswitch-controlled solenoid valves.

The Shocker used two solenoid-operated control valves in order to obtain separate controls over the ball loading sequence and the air delivery sequence. The Angel made use of a linked hammer and bolt assembly, which permitted the use of a single solenoid to actuate the entire firing sequence by controlling a piston that powered the hammer/bolt assembly forward, simultaneously chambering a paintball and releasing the propulsion gases at the end of the hammer's stroke.

The twin-solenoid arrangement of the Shocker permitted slightly lower operating pressures to be used, however the drastically simpler arrangement of the Angel provided a faster firing sequence, which ultimately proved to be favored by the players and as a result the basic operating principle behind the Angel has remained unchanged (indeed, it has even been copied many times over by a series of "stacked tube electros"), whereas the Shocker has gone through a series of revisions that culminated in a complete redesign in 2003, and now utilizes a single solenoid powering the increasingly popular mechanical configuration known as a "spool bolt".

It is also worth noting that while these two markers essentially tied for first electropneumatic markers to market, both designs were pre-dated (by years in some cases) by a series of homemade electropneumatic "kits" that modified pre-existing markers such as the Autococker or Sterling.

Backlash

The increased availability and use of these markers also encouraged a movement that had already been chafing at the previous technology advances of paintball. These players desired a return to the days of pump markers, ten round capacity, and 12-gram CO2 "powerlets". The movement eventually became what is known today as "Stock-Class Paintball".

Necessities of very fast guns

The Angel and the Shocker exacerbated a fundamental problem that had been brewing in the sports markers got quieter, with less vibration and kick, the vibration that used to keep paintballs from jamming in the hopper feedneck went away. The solution was a move to motorized loaders, most notably the ViewLoader Revolution, which used a paddle to agitate the balls whenever an infrared beam in the feedneck became uninterrupted.

However, the reality of gravity set in, and it was obvious that to satisfy the appetites of the modern marker, the loader manufacturers were going to need to force the paintballs down the feedneck faster than mere gravity would allow. As a result, modern markers now feature Empire's Reloader B2 and MagnaDrive, Dye's Rotor, ViewLoader's VLocity, Odyssey's Halo, The Q-Loader and the Draxxus Pulse systems, each feeding at rates of 22 balls-per-second or more.

Ball detection systems

Two main ball-detection systems were created to ensure that a ball is present in the chamber when the player pulls the trigger. These systems were needed because, even as the loaders fed paint ever-faster into the markers, so too did the markers develop shorter firing cycles and more responsive electronics. Descriptions of the two BDS's and their subtypes follow:

Infrared "Eye" (Optointerrupter or Break-Beam)

Makes use of an infrared emitter and receiver to detect the presence of a ball based on whether or not a ball in the feed tube blocks a beam from reaching a receiver on the opposite side.

Reflective

Detects whether a ball is present based on amount of emitted light reflected back to a sensor.

Weight sensor

Detects presence of a ball based on force applied to a rod within the at the base of the chamber, which converts that force to an electrical signal via a piezoelectric "pad".

COPS/COPS2

A rod pokes up into the firing chamber so that the tip just comes into contact with the bottom of the ball. The rod is oscillated at an extremely high frequency (imperceptible to humans) by a crystal on the control board, and when a ball falls into the chamber and hits the rod, the oscillation is affected, allowing the marker to detect when the ball is fully chambered.

Sensi

As COPS, above, but the calibration of the software to detect ball presence is automatic. Note also that Sensi incorporates an LDS (Load Detection System) that allows it to detect presence of balls further up the stack, occasionally allowing exceedingly-fast performance when it detects a full, pressured stack.

Noise activated

Using electronic "ears" hoppers will "listen" for the marker to fire and feed the next ball accordingly. This saves batteries if the hopper is left on, and since it does not require an "eye," it does not run the risk of impaired performance due to a dirty or obstructed sensor.

Although it stops excess battery use, when in an intense firefight, with nearby players, the hopper might load accidentally as the reports of other markers can deceive the sound sensor.

See also

Angel

Bob Long Intimidator

Dye Matrix

Excalibur

ICD Bushmaster 2000

ICD Promaster

Planet Eclipse Ego

Smart Parts Shocker

Smart Parts Ion

References

^ Smart Parts Lawsuit

External links

ZDSPB.com Tech Articles - In-depth articles on how markers work, with animations and diagrams.

AngelFAQ.com - Extensive tutorial on how the modern Angel paintball marker works.

Review on Paintball Guns

v  d  e

Paintball

Appendix:Glossary of paintball terms

Equipment:

Paintball marker, Electropneumatic paintball marker, Paintball equipment

Paintball Markers:

Angel, Ariakon Overlord, Ariakon SIM-5, Autococker, Automag, Bob Long Intimidator, CCI Phantom, DD68 Redux, BT-4 Combat, Dye Matrix, E Matrix, Excalibur, ICD BKO, ICD Bushmaster 2000, ICD Freestyle, ICD Promaster, PGP, Planet Eclipse Ego, Proto SLG, RAM P99, Smart Parts Ion, Smart Parts Shocker, Smart Parts SP-8, Spyder MR1, Spyder MR2, Spyder Rodeo, Spyder Victor, Spyder VS2, T68 Paintball Marker, Tippmann 98 Custom, Tippmann A-5, Tippmann C-3, Tippmann SL-68 II

Game Styles:

Paintball variations, Scenario paintball, Speedball, Stock paintball, Tankball, Woodsball, Woodsball strategy, Slingshot paintball

Positions:

Player positions (paintball), Speedball backman, Speedball centerman, Speedball frontman

Media:

Blackballed, The Whiteboard, Greg Hastings Tournament Paintball, Greg Hastings Tournament Paintball MAX'D, Gotcha! The Sport!, Gotcha!, NPPL Championship Paintball 2009

Other Objects:

Paintball tank, Paintball pistol, Paintball bunker

Companies:

Airgun Designs, APS (formerly WDP), DYE Precision, Indian Creek Designs, JT Sports, Kingman Group, Smart Parts, Special Ops Paintball, Tippmann, Worr Game Products (WGP)

Tournaments

List of professional paintball teams, NCPA (paintball), Ultimate Arena Paintball League, List of paintball leagues, NXL, National Professional Paintball League

Major League Teams

Orange County Bushwackers, Portland Naughty Dogs, Russian Legion, San Antonio X-Factor, San Diego Dynasty

Players

Jeremy Labiano,Oliver Lang, Ryan Podesta, Colt Roberts, Greg Siewers

Categories: Paintball marker operation
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