Spring Identification

[Tad]

Is there a quick way to identify what type a spring is?

Part of a recent purchase, i was given a free spring however i have no what this spring actually is.

**Edit**

When i get my new M4, i'll stick it in the V2 gearbox and chrono with it. But I'm wondering if there is an easy way to check now.

 

[Lozart]

Lick it. If it tastes like apples then it's an M90.

 

[Lozart]

I jest of course.

Unfortunately there isn't an easy way to tell what power a spring is without putting it in a gun and chronoing it. That's why I always try and label any I take out of my guns with a bit of tape....

 

[Tad]

What if it tastes of oil?

Great times then, is there a standard FPS i can expect from each of the M### series springs? Just for the identification when i Chrono this then.

 

[Lozart]

What if it tastes of oil?

Great times then, is there a standard FPS i can expect from each of the M### series springs? Just for the identification when i Chrono this then.

If it tastes of oil it's probably an M110. Or an M90 that's been dipped in oil. Tricky business see....

Generally springs do fall into a range denominated by the number in metres per second so an M100 should give a muzzle velocity around 100m/s (or 328FPS). BUT - there is a difference between manufacturers as ably demonstrated in this chart: http://www.airsoftcanada.com/SpringChart.php (note that that is from Airsoft Canada and doesn't include many of the brands that are easily purchased here).

Muzzle velocity is also HIGHLY dependant on a number of other factors (Cylinder volume to barrel volume ratio, quality of airseal etc) so the spring strength should only ever be a rough guide. I have personally had issues with M90 springs resulting in guns with 350+fps (when combined with double seal cylinder head, high quality piston head, o-ring airseal nozzle and a decent hop rubber).

 

[Tad]

Thats good info to know, thanks for the heads up.

I will wait for the V2 and then test out all the springs on a chrono.

Cheers!