Increasing FPS in different weapons?

[Liam Porter]

I know how you increase the FPS in a spring gun.

Stronger spring, which then risks breaking the sears, and cylinder.

And in an AEG.

Strong spring, which risks breaking the gears, cracking the gearbox, motor being underpowered, etc.

But, how do you increase the FPS in a GBBR? And what is it that breaks in a GBBR?

Same as above, but for a pistol - GBB and NBB?

Thanks.

 

[Rock-climby-Dave]

install an NPAS and open it right up in a GBBR - risks involved - slightly more wear? maybe? not sure on that, risk damaging weaker recoil springs.

GBBP hi-flow valves, stronger knocker spring. Risk smashing a plastic slide

 

[Liam Porter]

Thanks, NPAS easy to use/install? And does it give constant FPS, even if the temperature increases throughout the day?

The slide on my TM Glock 17 half came off last I skirmished. It was twisted, so the front was on properly, but one side of the back had come off the body.

Took a lot of force to get it back on, but didn't crack the slide.. Is this due to shooting too powerfully?

 

[Rock-climby-Dave]

fairly simple to install. fairly easy to use, needs adjusting throughout the day as temperatures increase, you run the risk of going over the limits - always start the day at around 300fps

not sure on the Glock TBH, mate

 

[TheFull9]

An NPAS will actually decrease wear on a lot of parts if you increase your FPS with it. The gun still lets the same amount of gas out the magazine each shot, the NPAS just controls the proportions of that gas which are routed forward (to propel the BB) and rearward (to recoil the bolt carrier group). If one goes up, the other goes down and vice versa.

 

[Ian_Gere]

I think it's worth noting that there are a number of things you can do to increase the fps of an AEG other than just upgrade the spring, and far from risking damaging it, you could make it work more efficiently and thus last longer... a bit of grease between the air nozzle and cylinder head for eg, and Madbull claim their Shark hop-up rubber can add up to 10 fps; lube between piston and cylinder; bearings on piston head and spring guide plus the right lube on those; a nozzle that seats well against the hop; seal between hop unit and barrel; I'll bet that you could gain or lose a few fps depending on how much friction is generated between one type of piston O ring and the inside of the cylinder versus another... and that's leaving out bore up cylinders, tight bore barrels, the relative hardness of hop rubbers, nub shapes...

The spring may well determine whether the gun chrono's under the site hard limit, but it's all the little things added up that get a gun consistently just under a site limit, eh?

 

[Liam Porter]

Thanks for the information on NPAS people

I think it's worth noting that there are a number of things you can do to increase the fps of an AEG other than just upgrade the spring, and far from risking damaging it, you could make it work more efficiently and thus last longer... a bit of grease between the air nozzle and cylinder head for eg, and Madbull claim their Shark hop-up rubber can add up to 10 fps; lube between piston and cylinder; bearings on piston head and spring guide plus the right lube on those; a nozzle that seats well against the hop; seal between hop unit and barrel; I'll bet that you could gain or lose a few fps depending on how much friction is generated between one type of piston O ring and the inside of the cylinder versus another... and that's leaving out bore up cylinders, tight bore barrels, the relative hardness of hop rubbers, nub shapes...
The spring may well determine whether the gun chrono's under the site hard limit, but it's all the little things added up that get a gun consistently just under a site limit, eh?

Click to shrink...

Yeah true, I know most of that, I meant main power increases, like from 300-350 FPS, or 350-500 FPS for a sniper.

Thanks for that though .