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Old 07-19-2009, 11:16 AM #1
ect301fps
 
 
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Join Date: Jun 2009
Moar Phantom velocity problems

Got my Phantom several weeks ago, but couldn't play with it because the velocity is being uncooperative. I am using one of those little Ninja hpa tanks and velocities have been on average over 300fps with random spikes (30 +/-) in velocity. I recently tried putting in the light, blue main spring which seems to have lowered the velocity slightly, but it's still shooting hot at around 290fps with the random spikes. Tested the paint and it fits snugly and blows through easily enough.

Was considering getting a regulator, but all the kids here seem to advise against that. Even with CO2, which all the kids say is supposed to work, there isn't much of a difference. Still shoots hot with random spikes. Though, I have not tested CO2 with the new spring, I'm pretty sure that not much difference will be seen.
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Last edited by ect301fps : 07-19-2009 at 11:18 AM.
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Old 07-19-2009, 12:19 PM #2
ikey
 
 
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ok. to get the gun normal, i would just start stock. try putting all original springs in.

phantoms dont have a very large velocity range. probably 315 ish to 270ish. obviously it changes due to climate and etc cause co2 changes bla bla bla. also, i have found that velocity adjustment i hard. very hard to guage how much a turn changes velocity. seems like its kinda a crap shoot, and generally i have set my phantom 1 good time and i really dont need to change it.

yes. phantoms are made to run HP, espeically on unregged co2. regs are simply not needed at ALL (unless you want to special rig a phantom for lower pressure).

i might be mistaken, but im pretty sure screwing the TPC all the way out is higher fps. make sure all inner workings are ok/lube/maintain the gun. i would just start all the way in. then slowly unscrew it to get the right velocity. this will be a pain cause phantoms really suck to adjust the velocity (i hate the down the barrel thing).

if you cant get it under 300 with decent consistancy, something is probably wrong. might want to check the main cup seal or the other 1-2 o rings in the entire gun.

also, try barrels. because you cant really increase pressure on a phantom, you are at mercy of the simple adjustment. and bore match DOES effect FPS. with normal guns, you can jack up the psi.

one time the feild paint was sooooo small it was barely just right for the smallest freak back (around .680) i think. the stock phantom barrel is .691. long story short i could not get my velocity above 215. i unscrewed my TPC untill it fell out. did not matter. velocity did not change untill i loaned a frantom barrel with freak inserts from somebody.

thought your issue is opposite, it just goes to show you how much little things effect simple mechanics. who though paint sizes could change speed by about 100 fps.
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Old 07-19-2009, 12:45 PM #3
oggfueler
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If it's a stock Phantom... I'm surprised your getting over 300fps off of a HPA tank... what's the output of the Ninja's reg? How is your Phantom sprung?
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Old 07-19-2009, 12:57 PM #4
muzakx
 
 
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Join Date: Oct 2007
Location: Ontario, Cali
It might be a shimmed Ninja reg.

Removing a shim may help lower the pressure. You should call Ninja before you do of course.
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