Air Tank Blasters - Modding Systems!

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Just to share some systems that i've tested with air tank blasters... hopefully it can also be a useful reference for modders.

Here are 2 demo videos which show possible setups that can be incorporated into various air tank blaster mods.

Safety Valve System - Parts Demo



System Parts:
- Topeak Pump (Mini Dual G)
- Pressure Gauge
- Adjustable Pressure Release Safety Valve
- Nerf Air Tech 3000 (AT3K) Air Tank Assembly
- M6 size Pressure Rated Air Hoses
- M6 size Pressure Rated Quick Release Couplers

You'll notice in the video that i'm using a Topeak Mini Dual G (2-stage/double-action) Bike Pump, it has a max. pressure rating of 120 PSI and it only took me 2 easy pumps to reach 50 PSI with the AT3K air tank (a magstrike pump would have required 6-7 pumps to reach that PSI).

Thats one of the reasons why i had to install a safety valve in my modded AT3K units, 'cos the pump effort is so easy and light that i sometimes accidentally put extra pumps into it and end up exceeding 100 PSI, which makes the trigger so difficult to pull that i had to open the casing to disconnect the air hose just to manually release the excess air pressure. With the safety valve i can set the limits or vent the pressure externally.

Anyways, after trying out various replacement pumps, i now use the Topeak Pumps for all my modded AT3Ks, it allows the blaster to operate at a much higher RoF and with alot less effort, so i recommend it (or similiar high pressure rated double-action bike pumps) for any modder who is looking for a similiar combo.

Here is what an early setup looked like (before i installed the safety valve, which is positioned at where the goo gauge used to be):



TP3k = Topeak 3k. :)

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Constant Pressure Air Feed System - Parts Demo



System Parts:
- Topeak Pump (Mini Dual G)
- Pressure Gauge
- Adjustable Air Flow Control Valve
- Rubber Air Bladder (From Nerf RF20)
- Nerf Air Tech 3000 (AT3K) Air Tank Assembly
- M6 size Pressure Rated Air Hoses
- M6 size Pressure Rated Quick Release Couplers

For this system, its similiar to what some modders have already previously done with their "semi-auto" mods, in my example i'm using an Adjustable Air Flow Control Valve to slow down the speed of the air refill from the rubber air bladder and the AT3K air tank. The air flow valve can be adjusted larger, so that the refill will be faster in between shots, but it'll also use up more air due to the increased flow leakage during firing.

Note that the constant pressure is derived from the rubber air bladder (not the air flow control valve).

Btw, all the pressure rated components i used in these setups are sourced from my local pneumatic equipment parts supply shops... i guess you can find similiar parts quite easily from online sites too.
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