Spring Comparison Chart serves a very useful purpose: it is clarifying the difference in performance of various springs. I guess it is in human nature for players to wonder how to better their replicas, how to gain the upper hand over the opponent.The logical approach to solving the players wishes would be to increase the replicas' range.
Concept of AEG dictates that the simplest way to increase the range of the replica is to replace the existing piston spring with a stiffer one.

Enter the aftermarket parts manufacturer. Almost every manufacturer of aftermarket parts market their version of upgrade springs with various tensions. Nomenclature is sometimes confusing and deceptive. Most common markings include some reference in either M for meters or % for the increase of stiffness in percentage. The only common nominator is the Tokyo Marui's stock designation of 85 Meters per Second as the basic comparison, the basis, from which the upgrade strengths increase.

So, choosing the correct spring for ones needs and requirements should be fairly easy, right? Well, it should be, but it unfortunately it is not. Every manufacturer rates their springs differently than the competition.
So the performances of various similar marked springs vary.

There are other factors that dictate the performance results than just the manufacturer markings, but we shall leave those factors aside and concentrate on the springs, their markings and their performance.

To make things easier for the average airsofter, Airsoft Canada's Brian Wong compiled the data through rigorous testing and careful performance measurements and data gathering. At this point I'd like to thank Brian for doing this herculean job (...and a good job he did) and another thanks goes to Brian for letting us use his data for this article.

Thor21 & Steel6

We herewith publish Brian's data, complete, just wrapped a tad differently.

List of parts used for this comparison test


All springs tested were in brand new condition !

Comparison chart


Data gathered by Brian Wong, AirsoftCanada

Your results will vary from these published below. Different upgrades will provide different results. The data contained in this chart should only be used as a reference and as a comparison between springs. Not as a precise predictor of your results.

Notes:
King Arms M100 spring tested must be mispackaged from the factory. The test results yielded were exactly the same as the M90 and the springs even appeared to be physically similar.

*Velocities indicated with an asterisk were derived by obtaining velocities using Airsoft Elite 0.25g BBs through a Guarder Optical Chrony, converting the result to Joules, and then applying that work (J) amount to 0.20g for a calculated result.
©2006 All Rights Reserved

All parts of this document must be reproduced in whole. Any fragmentary, incomplete or partial publishing of this document without the expressed consent of the author is a breach of copyright law.

Data kindly provided by Brian Wong, AirsoftCanada