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Apr 13

How gas pistol works

Before you pull the trigger, the piston is at a position where its valve is blocking the passage between the lower gas passage and the connecting gas passage. The valve is supported by a small spring. You pull the trigger, and the hammer hits the head of the movable pin. The movable pin hits the …

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Apr 13

Ball valve

A few very-high-end guns (gas guns and paintball markers) use ball valve, which is sort of a one-quarter turn valve. It has quite literally a ball placed in a passage through the gas flow. The ball has a hole through it, which is for opening and closing the valve. When the hole is running in …

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Apr 13

Origin of modern gas guns

Many of the modern gas gun designs are based on the early invention of Gale in 1957. In fact, Gale’s invention was for a CO2 powered gas gun, which was granted a patent in the US (US Pat # 2,817,328). Most modern designs have small details totally different from Gale’s work. However, Gale’s design is …

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Apr 13

AEG motor break-in

The best way to gain power from a motor is to properly break-in the motor brushes and the bronze bushings. You want to first break-in the brush/commutator interface so that the brushes can conform better to the shape of the commutator. To do so is easy – just run the motor on 4 cells (1.2V …

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Apr 13

M4 motor installation

When inserting the motor, make sure the POS side stays on the side closer to the trigger. The NEG side, on the other hand, should stay close to the rear end. Carefully arrange the wires, then install the end cap and put in the motor position adjustment screw. A quick test can then be performed …

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Apr 13

AEG wiring requirement

When selecting the proper wire, pay attention to the American Wire Gauge (AWG) system. An AWG gauge of 14 or 15 can sustain higher amps for power transmission than the standard 16 or 18 wires. All wires have inherent resistance and that the best way to minimize resistance is to minimize the wire length (resistance …

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Apr 13

AEG continuous current requirement

When you equip your mechbox with a harder spring, you want to ensure that the motor has sufficient power to start the load. One cannot, however, just look at the voltage level. You need to know how to determine your battery’s continuous current. mAh x C=mA, For example, With a 1500mAh, 10C battery, the continuous …

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Apr 13

AEG full auto misfire

Generally speaking, mis-firing has nothing to do with the gears of the mechbox. To find out whether or not this is a magazine problem, simply test fire with another magazine. If problem persists, try to test fire with a low-cap mag. If a low-cap mag still cannot make things work, chance is that something is …

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Apr 13

Putting together the hopup unit

It is recommended that you first insert the hopup rubber into the inner barrel, then you insert the barrel into the empty hopup chamber. Have it tightened via the plastic C clip. Finally,  install the various hopup parts. One easy way to improve air sealing and prevent air leakage at the hopup is to apply …

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Apr 13

GBB gas system upgrade

In theory, the most straight forward way for a power upgrade is modifying the gas system. Think of gas as water – the more water you have, the higher pressure you can generate out of the water. If the water level runs low, water pressure drops accordingly. The same holds true for gas. The first …

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