Airsoft Canada - View Single Post

TJchoosespikachu! · October 19th, 2005, 06:34

i've upgraded just about the entire upper gearbox of my TM G3 SAS and it seems like the fps is still way lower than it should be. i'm using a guarder sp 90 which is supposed to be firing somewhere around 335fps according to http://www.poweredgehawaii.com/SpringTest.asp but it's still cronoing at 280. i've installed the same spring in a couple of friends' guns (mc 51, m4a1) and they all seem to be shooting in the 330 range. here's a list of what i have installed:

area 1k spring guide with bearings
guarder sp 90
systema aluminum piston
systema silent piston head
systema silent cylinder head
systema nb cylinder
systema g3 nozzle
area 1k tappet plate
systema shims
area 1k bushings

think my SAS was shooting in the 280's bone stock when i first got it... it's frustrating that it's still shooting around the same fps after all these upgrades. i've checked cylinder compression and it seems to be leak-free. i thought it might be the air nozzle but a brand new systema one didn't seem to help. what could the problem be? i'm about to go crazy!!!

October 19th, 2005, 06:34	#1
TJchoosespikachu! Trader rating Join Date: Oct 2005 Location: Houston, TX	TM G3 SAS low fps problem i've upgraded just about the entire upper gearbox of my TM G3 SAS and it seems like the fps is still way lower than it should be. i'm using a guarder sp 90 which is supposed to be firing somewhere around 335fps according to http://www.poweredgehawaii.com/SpringTest.asp but it's still cronoing at 280. i've installed the same spring in a couple of friends' guns (mc 51, m4a1) and they all seem to be shooting in the 330 range. here's a list of what i have installed: area 1k spring guide with bearings guarder sp 90 systema aluminum piston systema silent piston head systema silent cylinder head systema nb cylinder systema g3 nozzle area 1k tappet plate systema shims area 1k bushings think my SAS was shooting in the 280's bone stock when i first got it... it's frustrating that it's still shooting around the same fps after all these upgrades. i've checked cylinder compression and it seems to be leak-free. i thought it might be the air nozzle but a brand new systema one didn't seem to help. what could the problem be? i'm about to go crazy!!!