If you go too far on shimming the coil spring, you will drive it coil bound, the pressure will skyrocket, and blow the burst disc.... The higher pressure Ninjas use Belleville disc springs....Bob
anyone got any ideas on how to bump a 850psi ninja tank to say 1000-1100ish? i cant find and of the shims anywhere locally so i made a washer just about perfect size but its a tad thicker than the four shims inside maybe .020 thicker. think itll work?
thanks Rob im good to go for now. over a 55 shot string on a 2500psi fill i managed to get 802 fps avg and 4 fps std dev. so im loving ninja regs they are much better than the empires and others ive used in the past.Josh