N700 shootdown

[ren]

Just wanted to know if it was normal to gwet such massive shootdown on a nova700 when you string off more than 10 balls going at about 7bps. Because even though my nova seemed alright when I was chronying it in yesterday, I used it and it was like running a hose with the pressure off. I would string out the first five shots or so (which were freakin darts :D), and then it would drop, drop, drop and I tried it nd it went all the way from 285fps where I like it to 200.1fps! ugh!
I'm thinking it may be my max-flow holding it back, but I dunno.
It seems the reg in my gun is kinda funky too. I would shoot one shot and it would be great. 285fps, just totally darting. Then I would take another and it would drop to 166fps. This is for no reason. Not shootdown, not nothing. Hmm. Regardless, I will take out the max-flow and see what happens. If it is STILL bad, I am going to try to get a SN "endcap" (really a dicer chamber) and JUST use the max-flow.

Has anyone had this shootdown problem?
Wish me luck.
-Ren

[BK sr]

Ive never tried your setup but I think your on the right track, a dual reg. 95psi is a little over kill one or the other should be just fine. If your not blowing o-rings on the max flow Id try that just so you would be different:D

[ren]

so are you saying keep it dual regged or only single reg it withthe max-flow?
I just tried it out with the OEM reg and it seemed to be fine, but I'm worried about the max-flow slowing it down...

[kenjay]

I think you should just stick to one reg or the other. With the dual regulated set-up, you're starving the gun when you shoot long strings. I think BK was saying to just use the max-flo, simply because it would be different from other novas

[ren]

but from what sean ahrens of pgi tells me, the max-flow doesn't have the flow rates of the OEM reg. I dont know if that's true or not, but the man does know his stuff...

either way, I think I may just be stubborn and keep the max-flow anyway :D

[BeeRRunneR]

I would think that the max flow should have no problem providing the flow the 700 needs, if it can keep up w/ every other marker out there . . .

HOWEVER, you do need to make sure you have the maxflow HIGH enough . . . when daul reging, the first reg (the maxflow in your case) needs to be at least double PSI as your operating pressure from what i hear . . .

in other words, what pressure do you have the max flow set at?? turn it UP a little (try 300-400) and see if you still get the shoot down . . .

[ren]

Well, I'm running it at 225psi, as high as my max-flow is rated. I tried running it at 240psi, but the relief goes and I start leaking. However!
I have gandered that it is not shootdown, because it really isn't. I have found it isn't after a string of shots, but it is actually sporadic, as I will take one shot and it will be low and another- low, and then right on, and then too high, and then too low again and then too high, and so forth. I just can't get it right. So I'm sending it out to the rat of tec (tecrat) to fix up, being the nice guy he is.
Anyway, I REALLY hope it comes back fixed, because I think 225psi should be good because the person before me rad his stab at 200psi and had no problem with shootdown, but then again he lied about the reg being f'd up too, so now I just don't know what to do because I based my purchase of the max-flow upon what he said. Damnit. I'm too trusting.

Anyway, I guess I could get a new spring kit for my max-flow so I can run it at 300-400psi if it DOES suck...

wish me luck; I'm gonna need it.

[youngster]

i remember reading an article about the same thing with a nova while running a remote. the problem was with the flash valve or something. i am as clueless as you are.

[ren]

a flash valve? I thought those were only used in hydrogen electrolyzers...

Is this flash valve that replacement for the spool valves? And a remote could limit flow...

[youngster]

i am not sure i recall this from an old APG when a team in Arizona was testing a nova i can get the exact article if you want just give me a minute or two.

[ren]

the minute or two is yours.

[youngster]

well i cant find the exact article on actionpursuitgames.com, i do have the july 99 mag and heres what it says.
"Attaching a C02 bottle to a remote set-up, I started the chrono testing. Immediately i found that i had drastic spikes in velocity and dropsin velocity, within a wide rangeof 50 to 60 fps. Upon checking , i found out that my recently purchased nova came with what is known as a "flash valve" used to keep liquid C02 out of the gun when the shooter uses a C02 bottle directly to the asa. since i was using a remote setup, the Flash Valve was not only needless, but was the source for my chrono speed fluctuations."
from July 99 apg
hope that helps a little?

[ren]

maybe if I knew how a flash valve worked...

[NOVAguy]

"NOVAguy to save the day!" :)

the flash valves were used to help keep liquid out of the nova 700, back in the days, when there wasn't even a supernova...
its a small aluminum piece that is inline with the hose.
being a flash valve, it would let co2 IN but not OUT.... as in you could ungass and shoot like 10-20 shots or something...

it halped keep out liquid because it was aluminum, and the co2 traveling through it would break down a bit more than usual due to aluminums heat properties, sortof an early weak attempt at D-ICER tech.......:)

and ren, that Max should deffonitally keep[ up, its your screwed up OEM reg that is making it all sperattic... take it out!

also, the reason I know is because: you turn up your max, and the gun vents , HELLO MCFLY! that means the OEM isnt keeping it at 95 psi like it should, meaning it isnt working right, so you shouldnt expect concistency out of it....
my advice:get the endcap!

NOVAguy

[ren]

Thanks to sean (man he's a lifesaver), I should have both a FIXED OEM nova700 reg, and a super nova endcap, and a fixed max-flow! Sean has been nothing short of awesome, and I can't wait to try it out with all the different setups (single oem regged, double regged, max-flow regged, NO regged- hehe j/k)

Well I don't know exactly what sean is doing, but I am definetly keeping off of his case about getting anything done. I've still got my phantom (which I love to death) and I'll be waiting for the nova when it arrives (which {*could*} be a while).

I can't wait to shoot a properly tuned nova!!

[youngster]

same here. i sent my nova in cause of a wierd leak coming out of the velocity adjuster but i called sean today asking where my gun was and if he fixed the leak. and when i talked to him he said that the shipping company scrached out my return address so he didnt know where to ship it to. (ren you are right about sean, he is a lifesaver)!

[ren]

Sean is great, it's my nova that's the problem... got it back this afternoon and still can't get it to work right. Seriously considering getting out of semiauto play and going pump from now on...

it's too bad because the nova is such a cool gun, it's MY nova that sucks the big one...

[youngster]

i went through the same thing for a while. i couldn't use my nova for like 5 months.

[ren]

Urm.... well that's because the regulator in the gun is... bad. It simply won't work right. I've taken it apart and cleaned it and lubed it and put it back together the right way and it still sucked. Even sean took it apart, lubed it, and rebuilt it and I still couldn't get it to work for me. HOWEVER, he says he tried it out that way and it worked fine. Beats the shet outta me...

But my max-flow only seems to work very well- thus far.

[youngster]

well i can tell you how good of a job he did when i get it back. should have it back by tomorrow or thursday.

[youngster]

got it and its working great