Extremly low FPS -AK74

Trader rating · June 30th, 2006, 21:45

What I have here is a new ICS AK74m. never been fielded.

I installed a prometheus SP120sp and ran it through a chrony.
I was getting around 75m/s or around 250fps

the piston head seemed to be in ugly condition, so I ordered a systema piston head and a gaurder nozzel and just installed them.

once installed, i still get poor fps...all less then 100ms

the hopup is lubed and in good condition. and is nice and close to the mechbox(suspected a gap, but thats not the case).

Im all outta ideas. the cylinder is getting a good airseal, as is the piston head and nozzel. the hopup is fine... beats me
chrony is fine as its getting good fps on my M4.

im gonna try another spring, but if anyone else has any ideas, lemme know.

Trader rating · June 30th, 2006, 22:57

ok, i tossed in a confirmed M110 and im getting exactly 110m/s
looks like a shitty spring.

firemachine69 · July 1st, 2006, 01:54

So anybody wanna chime in why there's been so many dud springs lately? Or has it always been this way? (the PDI 150 comes to mind)

SHaKaL · July 1st, 2006, 01:55

Maybe its the quality of the steel they use...

SmokinGLocks · July 1st, 2006, 03:23

NVM

Trader rating · July 1st, 2006, 09:57

I was surprised...since it was a prometheus...and they are known for their quality and consistancy.
It was a green spring like it should have been, but it was about 1 inch shorter then the MS110
as soon as I tossed in the MS110 I was getting 110m/s on the dot
with the MS120, I was only getting 75-85m/s

so ill settle for 110m/s for now...much lower then I would prefer.

out of the 5 springs I have , this is the 2nd one with odd results.

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June 30th, 2006, 21:45	#1
Droc Guest Trader rating	Extremly low FPS -AK74 What I have here is a new ICS AK74m. never been fielded. I installed a prometheus SP120sp and ran it through a chrony. I was getting around 75m/s or around 250fps the piston head seemed to be in ugly condition, so I ordered a systema piston head and a gaurder nozzel and just installed them. once installed, i still get poor fps...all less then 100ms the hopup is lubed and in good condition. and is nice and close to the mechbox(suspected a gap, but thats not the case). Im all outta ideas. the cylinder is getting a good airseal, as is the piston head and nozzel. the hopup is fine... beats me chrony is fine as its getting good fps on my M4. im gonna try another spring, but if anyone else has any ideas, lemme know.

June 30th, 2006, 22:57	#2
Droc Guest Trader rating	ok, i tossed in a confirmed M110 and im getting exactly 110m/s looks like a shitty spring.

July 1st, 2006, 01:55	#4
SHaKaL Trader rating Join Date: Jan 2005 Location: Trois-Rivi?res	Maybe its the quality of the steel they use...

July 1st, 2006, 03:23	#5
SmokinGLocks Trader rating Join Date: Apr 2006 Location: Toronto,Ontario	NVM

July 1st, 2006, 09:57	#6
Droc Guest Trader rating	I was surprised...since it was a prometheus...and they are known for their quality and consistancy. It was a green spring like it should have been, but it was about 1 inch shorter then the MS110 as soon as I tossed in the MS110 I was getting 110m/s on the dot with the MS120, I was only getting 75-85m/s so ill settle for 110m/s for now...much lower then I would prefer. out of the 5 springs I have , this is the 2nd one with odd results.

Extremly low FPS -AK74

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