Does your gun's motor grip warm after a lot of semi-auto fire? The original motor might not be able to keep up with you! Upgrading to a similar torque motor will make the gun more efficient. I will explain motor upgrades very simply for beginners to understand. Advanced techs can chime in about motor specifics. However, I find it will be a vague concept for the initiated, so I keep it simple.
An upgraded motor, even if it gives you the same rate of fire as the original that it replaced, will typically be more efficient due to the better components found inside, such as a better magnet. You should consider upgrading your motor to pull a heavier spring (for higher fps), increase your rate of fire, or increase trigger response. The trigger response is what we experience when we pull the trigger and the mechanical time it takes to cycle a round through the gearbox. On an upgraded gun, it is near instantaneous and can provide a huge advantage for players who shoot semi-auto exclusively, especially when the action gets up close and personal, and a split second means getting that kill or that walk of shame back to respond.
Making small changes at a time is the ideal method to alter your AEG's performance. If you plan to do a complete custom build, the motor selection, spring rate, gearing, and battery type you select all have to work in synergy.
I will use a stock ASG M15 SIR Sportline for today's topic as my reference gun. It shoots 1J and performs adequately in stock form. A 9.6v battery will put out 15 to 17 rounds per second (rps). The first thing that would bump up my rate of fire is using an upgraded battery, such as an 11.1v Lipo. The higher voltage does wake up the gun; however, making everything run faster than harder without internal upgrades will be taxing your components. I would only recommend this if you are prepared to service the gun. I mention batteries because you can do this without opening up your gun. You can also use a nicer battery in conjunction with the motor upgrade.
Speaking of which, if you intend to run LiPos, as mentioned, components wear out faster, particularly the trigger switch. If you are not prepared to have the gun opened up to have this component replaced, do not run Lipos. If you are getting things upgraded, MOSFETs are an upgrade that can boost your electrical system's efficiency which can increase your rate of fire slightly and are a must when you want to protect your trigger contacts. Your gun will be Lipo ready at this point.
Okay, back to motors. Motor ratings are stated differently from manufacturers. It will be vaguely listed as a torque or speed motor. A torque motor usually spins at 30k RPMs or under, so ASG makes 18k, 22k, and 30k. Speed motors will be faster, so they spin above 30k, which can come in at 35k, 40k, 50k. Without going into the motor specs from each manufacturer, you'll generally be fine using a speed motor in a stock gun shooting 1.5J and under.
You will benefit from the gun responding better from a torque motor and have room to upgrade to 2J without the gun breaking a sweat. A very high speed motor will be highly efficient in a gun with a heavy spring, and likewise, a super torque motor will be overkill in a stock gun and may turn your gun slower for rounds per second. In many instances, super torque motors or high torque gearing is beyond what is necessary for most builds and almost never used. On the plus side, your battery amp draw will probably be low!
This M15 clocks in at about 19 rounds per second using an 11.1v LiPo with a fairly good charge. When I swap in an ASG 30K motor, the rps jump to 22. When I try the 40k, it jumps to 24 rps. Now, you can get crazier with this if you like, but keep in mind when a gun is cycling very fast, the magazines might not have the ability to keep up. I recommend you keep your rounds per second to under 30 for this reason. Mid-caps do better than high caps for high rate of fire builds. I could go to a 22k motor, and it should perform closer to what it did stock in terms of rps, but the gun will now pull that spring much more effortlessly.
That means smoother function and more efficient battery usage, and because of that, the grip and motor won't build up heat because the motor isn't working that hard anymore. If I put the 18k motor in this stock gun, my rate of fire will be very slow. About 13 rounds per second is what you would get. Going with this much torque would be no benefit as this motor should be paired with a gun that is shooting 2.5 or more Joules.
For a proline-level gun, out-of-the-box performance and response from a Lipo will yield a slightly faster rate of fire to start with. However the motors still operate within a narrow window of what upgrades it can handle and what springs it can pull, so you'll be taxing your stock motor just the same should you start changing up your parts. A similar mindset should be taken for motor upgrades as we did with the M15 and your results should be predictable.
When delving into the world of airsoft, understanding the pivotal role of airsoft motors in enhancing your firearm's performance cannot be overstated. These crucial components are at the heart of what makes your airsoft gun operate smoothly and efficiently. Whether you're a novice stepping into the technical side of airsoft or a seasoned player looking to optimize your equipment, recognizing the benefits of a motor upgrade is essential. Upgrading to a high-quality airsoft motor not only boosts the rate of fire and improves trigger response but also contributes significantly to the longevity of your gun's internal mechanisms. By selecting a motor that aligns with your playing style and the demands of your airsoft gun, you ensure a noticeable enhancement in performance. From ensuring a seamless feed of rounds to maintaining a cool grip even during intense semi-auto firing, the right airsoft motor makes all the difference in your gameplay experience. Embrace the upgrade and feel the immediate impact of a more responsive, efficient, and capable airsoft firearm.
Hopefully, that puts things into perspective for you, so I hope some of you will take your first steps in teaching your guns and seeing for yourself the improvements you make.
