JVAN technical journal

Airsoft Gearbox Guides & Technical Articles

Practical guidance for comparing gear ratios, checking V2 and V3 compatibility, selecting supporting bushings, and planning dependable airsoft gearbox builds.

How to Choose a POM Air Nozzle for an AEG

How to Choose a POM Air Nozzle for an AEG

By JVAN PRECISION0 comments
Choose an AEG air nozzle by matching the original part, not by relying on an M4 or AK label alone. Check the listed length and nozzle profile first, then verify how the replacement fits...
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How to Choose an Airsoft Inner Barrel

How to Choose an Airsoft Inner Barrel

By JVAN PRECISION0 comments
An airsoft inner barrel should be selected for its fit and manufacturing quality, not from bore diameter alone. Length, hop-up window geometry, outside dimensions, straightness, internal finish and the condition of the bucking all...
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Airsoft Magazine Types: A Beginner’s Guide

Airsoft Magazine Types: A Beginner’s Guide

By JVAN PRECISION0 comments
Choose an airsoft magazine by matching the gun platform and feed interface first. Capacity labels such as high-cap, mid-cap and low-cap describe how the magazine stores and feeds BBs, but they do not guarantee...
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AEG Tappet Plate Timing: Check the Complete Cycle

AEG Tappet Plate Timing: Check the Complete Cycle

By JVAN PRECISION0 comments
Tappet plate timing is the relationship between the sector-gear tappet pin, tappet plate, nozzle and the rest of the gearbox cycle. A feeding symptom does not identify one failed part by itself. Check movement,...
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AEG Delayer Chip: Function, Limits and Fit

AEG Delayer Chip: Function, Limits and Fit

By JVAN PRECISION0 comments
A delayer chip changes when the sector gear moves the tappet plate. It can extend part of the nozzle-open period, but it does not increase tappet-plate travel and is not required in every AEG....
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Replacing a Valken V12 Macro Line

Replacing a Valken V12 Macro Line

By JVAN PRECISION0 comments
A damaged or leaking Valken V12 macro line should be replaced only with tubing that matches the system’s documented size, material and pressure requirements. Do not choose tubing by appearance alone. Before opening the...
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How to Choose a Battery for Your AEG

How to Choose a Battery for Your AEG

By JVAN PRECISION0 comments
An AEG battery must match the replica, electronic control and available battery space. Do not choose by voltage or capacity alone. Check the replica or ETU manufacturer’s documented limits before connecting a different battery....
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