Kythera SA (Semi Auto)
Coming Soon - ETA, December 2019
Price - TBA
What is Kythera?
The name "Kythera" (ky-the-ra) was derived from the Antikythera Mechanism which is a mysterious device that was discovered by sponge divers off the coast of the Greek island Antikyther. The mechanism was so advanced in design that scientists have been studying it for decades to discover its purpose. The machine dates from around the end of the 2nd century B.C. and is the most sophisticated mechanism known from the ancient world. Nothing as complex is known for the next thousand years. The Antikythera Mechanism is now understood to be dedicated to astronomical phenomena and operates as a complex mechanical "computer" which tracks the cycles of the Solar System.
For this reason we used the name Kythera for the valve mechanism at the core of a new line of PolarStar mechanical HPA systems. Although it contains very few parts and is easy to install and maintain, the system incorporates a very intelligent design and is unlike anything else on the market. The system was designed as a mechanical system from the ground up and uses a realistic trigger mechanism which can be applied to single-shot, semi-automatic and fully-automatic systems.
The first of these systems is Kythera SA (Semi-Automatic), the semi-auto-only variant for use in AEG gearboxes.
Complete Shot Cycle
The design of the Kythera SA completes a shot cycle on the trigger pull. It does not require the trigger to be released before the nozzle chambers the next round and the firing volume is refilled. This occurs automatically and consistently every shot, with adjustable nozzle dwell and return speed.
As the system resets and recharges immediately after firing, it is ready to fire again before the trigger has been released. This means faster follow up shots and a lower potential for double feeding.
Kythera systems operate without a solenoid, electronics or a battery. This makes them waterproof and extremely rugged. An added benefit is the ease of use. There is no battery to charge and no extra electronics to hide in the gun.
The trigger mechanism is designed to replicate the function, weight and feel of a real single-action firearm trigger. It feels real because it is real. The tool steel sears catch and release the firing valve in the same way the sears of a real firearm catch and release the hammer or striker. This gives the Kythera trigger the distinct break and reset you would expect when firing a real single action firearm.
The trigger mechanism is also adjustable, allowing the user to fine tune the weight, over travel, length of pull and reset distance.
The internal firing valve is balanced and the only force applied during firing is the main spring. This means the function and feel of the trigger is independent of input pressure and velocity.
Extremely Efficient and Consistent
The Kythera valve design operates without the need for air to control the opening or closing of the valve. Without a pilot valve, 100% of the air going into the system is fired through the nozzle.
In addition to being extremely efficient, the system is also extremely consistent. The valve is released at the same point every shot with the same force applied, regardless of trigger input.
The Kythera SA system installs into a standard gearbox as a single assembly and without modification to the gearbox. There are no separate parts to install and the only parts needing to be retained from the gearbox is the trigger, spring guide, selector and safety components.
Wide Velocity Range
The Kythera boasts the widest operating pressure range of any of our systems and can operate between 50 and 175psi. Within this pressure range we observed a muzzle velocity of 250 - 450fps w/ .28g using a 6.05x380mm barrel.
- Designed from the ground up as a high performance mechanical HPA system, not a modification of a solenoid operated design.
- Patent pending valve mechanism provides excellent efficiency and consistent velocity combined with a realistic trigger pull and reset.
- Completes a full shot cycle on the trigger pull alone which translates into consistent nozzle movement and rapid follow up shots.
- Adjustable trigger. Adjustments include: Weight, length of pull and over travel.
- Adjustable nozzle dwell and nozzle return speed.
- Wide operating pressure range of 50 to 175psi.