Spring cutting to reduce fps.

[Jeremynep]

Is there any 'rule of thumb' so to speak when cutting loops off of a spring? And is there a maximum that can be trimmed?

[Aj619]

Don't quote me on this since if I was you I'd go buy a new lower rated spring.

But cut one loop place in gun fire over chrony repeat as necessary.

Still really go buy anew spring before something fucks off on you.

[vondnik]

YES it's called :don't be a cheap ass and get a new spring it's not like they are 100$....


cutting a spring is a bad idea as you will remove the spring seat(complete flat area) that seats on either the piston head or spring guide. The edge that you now have created is stronger than the metal(or plastic) used in those two contact point and will wear them out mutch faster while adding drag to your system

[DrunkenTeddy]

Originally Posted by Jeremynep

Is there any 'rule of thumb' so to speak when cutting loops off of a spring? And is there a maximum that can be trimmed?

This reminds me of the guys who cut their springs on their cars to lower them... It is a bad idea there but it's an even worse idea here since the wear you get will definitely cause problems.

Springs are cheap.

[Stealth]

Alternatively you can short-stroke your piston to reduce FPS. Not ideal but it does work in a pinch.

[jordan7831]

Just go and buy a spring. With a new spring you will know the aproximate FPS with more certainty then cutting your stock spring coil by coil. Since springs are only about 10 bucks you only have to open your gearbox once if you get everything right the first shot.

Cutting and re-cutting your spring will only force you to repeatedly open your gearbox and cause a lot more work and labour than the cost of buying a new spring. Besides, a new spring is only about 10 bucks. Why bother cutting down and having the frustration of testing and retesting?

This was also discussed here before:
http://www.airsoftcanada.com/showthread.php?t=92808

[Jeremynep]

Actually purchasing a new spring isn't a problem, I should have probably been a lil more clear. My sniper is 19 fps over limit, no gear boxes to mangle, I just wanted to know if trimming is a suitable option as the next step down in spring is a lot slower than I'd like to be. And heating/bending to replace factory finish isn't that hard. But thanks for your condescending barely any help at all reply @vondnik.

[SuperHog]

Originally Posted by Jeremynep

Actually purchasing a new spring isn't a problem, I should have probably been a lil more clear. My sniper is 19 fps over limit, no gear boxes to mangle, I just wanted to know if trimming is a suitable option as the next step down in spring is a lot slower than I'd like to be. And heating/bending to replace factory finish isn't that hard. But thanks for your condescending barely any help at all reply @vondnik.

I do it all the time. Cutting off a coil or two is fine since you are fine tuning your fps. Just rebend the the end and use a Dremel and grind the end flat.

[vondnik]

Originally Posted by Jeremynep

Actually purchasing a new spring isn't a problem, I should have probably been a lil more clear. My sniper is 19 fps over limit, no gear boxes to mangle, I just wanted to know if trimming is a suitable option as the next step down in spring is a lot slower than I'd like to be. And heating/bending to replace factory finish isn't that hard. But thanks for your condescending barely any help at all reply @vondnik.

heating spring steel even a little changes it mecanical properties.... and your welcome...

[Kos-Mos]

Originally Posted by vondnik

heating spring steel even a little changes it mecanical properties.... and your welcome...

This. Just heat the last coil (to the rear) and it will collapse. Voila! No need to cut anything.