Spring to FPS

[kingbob734]

Hi guys, could someone tell roughly what spring id need to get around 350fps, would it be a 110 or 12o, or none haha?

CHris :D

[Gaffa]

Re: Spring to FPS

An Element M105 spring can be bought for £5 posted off a company in HK, and that should give a speed of around 345fps.

However, an M110 might push it past 355fps...

[chrisn92]

Re: Spring to FPS

Well, i have a 115 spring which gives 370FPS so probably a 110 or 105 like gaffa said.

[cyberi4n]

Re: Spring to FPS

it's not just spring power - it also depends on airseal, O-ring, piston, hop etc etc. Just bear in mind that an M100 spring can have wildly different results in different guns. I managed to get my CA M15A4 up to a consistent 350fps on the nose using a silent headset and systema chamber and hop on the standard spring...

[t0astie]

Re: Spring to FPS

yeah I had a P90 doing 400fps on an M110 spring, reason was decent airseals and a tightbore just added to it. M100 would prbably still have been over 350, as I added a type 0 cylinder and a 455mm barrel.

As cyberi4n said you get widely varied results from springs, it really depends on a lot of factors. Buy a chrono and experiment, the springs are not that expensive.

[kingbob734]

Re: Spring to FPS

I have a crono, i just dont like to mess abou with gearbox's, im thinking of buying a toptech m4, but i want the gearbox wired to the back and i also want it at around 350fps not 330 :/

[Big John]

Re: Spring to FPS

m100 and then clip it if needs be - should be 350ish anyways

[bigfish312]

Re: Spring to FPS

how you setup your guns gearbox will vairy your springs FPS by upto 30% the p90 is a classic example as its air seal is extreamly good out of the box.