Velocity Bouncing Around

Ivan · 01-20-2010, 05:13 PM

Hey all,

Noticed my velocity with reballs is bouncing around in my micromag with a classic valve. Any specific reason for this? It has all new orings everywhere. Spiking velocity is due to something in the reg, so I stupidly took apart the piston today, but I put it back together properly (I think?), and screwed in the screw that holds in the piston spring and guts with teflon tape (No loctite on hand).

Did I mess up the piston by taking it apart, or is it possible that crappy sized reballs are the cause?

Pif · 01-20-2010, 05:19 PM

What kind of spikes are we taking about? 5-15 should be normal.

Ivan · 01-20-2010, 05:27 PM

Was bouncing between 270-309

idkfa · 01-20-2010, 05:54 PM

Are you referring to the velocity adjuster on the back? To the best of my knowledge, that does not need any sort of thread locker or sealer.

Ivan · 01-20-2010, 06:21 PM

No sorry, I mean the screw inside the piston. It's like a thin screw that you can stick a large allen key in. So in the brass piston body, I put the rubber plate, then the metal plate, then the spring, then the screw to hold it all in. The mag was leaking out of the velocity adjuster until I teflon taped that screw, then it stopped, but the velocity spikes are still there.

Other than the piston, I don't think anything else would cause inconsistent velocity. But I am a mag noob.

Pif · 01-20-2010, 06:51 PM

If it's leaking out the back the pressure is too high. That hole is pressure relief.

That's a pretty big fluxuation. What kind of output does your tank have?

Ivan · 01-20-2010, 07:40 PM

Its a ninja hpa tank. I suppose about 800psi output. Supposed to be fairly consistent air pressure output.

Yeah I thought it was a pressure relief hole, there is no air leakage out of it anymore, just the velocity spikes.

bulldog_TT · 01-20-2010, 08:56 PM

Check the spring pack, it should be clean and lubed with a light grease. Oil the Valve, check it with Paint, could be the Reballs maybe?

Ivan · 01-20-2010, 09:00 PM

Thanks. I greased the spring pack today. I wiped off the old grease and put a lithium based grease on it. I've oiled all orings possible, don't know what else I could oil.

Pif · 01-20-2010, 09:09 PM

All I can suggest is shooting some oil through the asa (non petrol based of course) and testing with paint.

01-20-2010, 05:13 PM	#1 (permalink)
Ivan Post Whore Join Date: Oct 2006 Location: London, On.	Velocity Bouncing Around Hey all, Noticed my velocity with reballs is bouncing around in my micromag with a classic valve. Any specific reason for this? It has all new orings everywhere. Spiking velocity is due to something in the reg, so I stupidly took apart the piston today, but I put it back together properly (I think?), and screwed in the screw that holds in the piston spring and guts with teflon tape (No loctite on hand). Did I mess up the piston by taking it apart, or is it possible that crappy sized reballs are the cause? __________________ "Hey. Did everything just taste purple for a second?" http://www.usc.uwo.ca/clubs/paintball/index.html I'll add my Feedback here, because I always forget to ask. My super awesome feedback of... awesomeness!

01-20-2010, 05:27 PM	#3 (permalink)
Ivan Post Whore Join Date: Oct 2006 Location: London, On.	Was bouncing between 270-309 __________________ "Hey. Did everything just taste purple for a second?" http://www.usc.uwo.ca/clubs/paintball/index.html I'll add my Feedback here, because I always forget to ask. My super awesome feedback of... awesomeness!

01-20-2010, 05:54 PM	#4 (permalink)
idkfa Stock Class Aficionado Join Date: Mar 2007 Location: Vancouver, BC, Canada	Are you referring to the velocity adjuster on the back? To the best of my knowledge, that does not need any sort of thread locker or sealer. __________________ MCB Feedback eBay Feedback

01-20-2010, 06:21 PM	#5 (permalink)
Ivan Post Whore Join Date: Oct 2006 Location: London, On.	No sorry, I mean the screw inside the piston. It's like a thin screw that you can stick a large allen key in. So in the brass piston body, I put the rubber plate, then the metal plate, then the spring, then the screw to hold it all in. The mag was leaking out of the velocity adjuster until I teflon taped that screw, then it stopped, but the velocity spikes are still there. Other than the piston, I don't think anything else would cause inconsistent velocity. But I am a mag noob. __________________ "Hey. Did everything just taste purple for a second?" http://www.usc.uwo.ca/clubs/paintball/index.html I'll add my Feedback here, because I always forget to ask. My super awesome feedback of... awesomeness!

01-20-2010, 07:40 PM	#7 (permalink)
Ivan Post Whore Join Date: Oct 2006 Location: London, On.	Its a ninja hpa tank. I suppose about 800psi output. Supposed to be fairly consistent air pressure output. Yeah I thought it was a pressure relief hole, there is no air leakage out of it anymore, just the velocity spikes. __________________ "Hey. Did everything just taste purple for a second?" http://www.usc.uwo.ca/clubs/paintball/index.html I'll add my Feedback here, because I always forget to ask. My super awesome feedback of... awesomeness!

01-20-2010, 08:56 PM	#8 (permalink)
bulldog_TT Whats your boggle? Join Date: Feb 2008 Location: Silver Springs Florida	Check the spring pack, it should be clean and lubed with a light grease. Oil the Valve, check it with Paint, could be the Reballs maybe? __________________ Feedback http://www.mcarterbrown.com/forums/f...-feedback.html Automag... when you absolutely have to mow down every sucker on the field!.....accept no substitute.

01-20-2010, 09:00 PM	#9 (permalink)
Ivan Post Whore Join Date: Oct 2006 Location: London, On.	Thanks. I greased the spring pack today. I wiped off the old grease and put a lithium based grease on it. I've oiled all orings possible, don't know what else I could oil. __________________ "Hey. Did everything just taste purple for a second?" http://www.usc.uwo.ca/clubs/paintball/index.html I'll add my Feedback here, because I always forget to ask. My super awesome feedback of... awesomeness!

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