View Full Version : psi/dwell/efficiency
alboher
07-03-2002, 08:36 AM
i'm trying to determine the most optimum level of air efficiency. my Rat operates at 180psi. i've adjusted the dwell to reach 280fps.
is it better to run at 170psi with a higher dwell or 190psi with a lower dwell still running at 280fps?
any insights r appreciated. thanx.
The Legend
07-03-2002, 02:05 PM
Making your pressure higher will give you better efficiency.
I'd run it at 195-200psi. Then adjust your dwell accordingly.
alboher
07-03-2002, 04:48 PM
thanx again, legend.
Higher pressure will make your imp more efficient, but i would not run above 190/195psi as if you go any higher spikes in pressure may be enough to damage your solenoid.
alboher
07-04-2002, 06:57 AM
thank u skog!
cheers!
The Legend
07-04-2002, 08:11 AM
Your gun has a PRV (Pressure release valve) that will vent pressure at 240psi, in case your reg creeps. You will be just fine running right at 200.
alboher
07-04-2002, 08:16 AM
excellent! i'll make the adjustment when i play this weekend. thanx.
Dynasty_PB
07-04-2002, 08:34 AM
Your gun has a PRV (Pressure release valve) that will vent pressure at 240psi, in case your reg creeps. You will be just fine running right at 200.
I always wondered about that. So how high would your reg have to go to blow the soliniod out?
peace.love.unity
i have accedentally ran 800 psi through my impulse for about 10 shots dry fire until I saw it, it didtn damage anything
you would only have to go to 240 psi to blow the solenoid, perhaps a little less. the one thing that has always concerned me is that the prv is set to blow at the same pressure that will blow the solenoid, this means that your solenoid can get damaged even if the prv goes. I don't trust my prv, andf so won't go any higher than 180psi in case of any spiking
all that happened to my impy was air was blowing out from the solenoild gasket but it caused no damange luckily, I wasnt paying any attention and hooked air straight into the marker instead of the maxflo, its a tough marker.
Dynasty_PB
07-04-2002, 01:36 PM
Ive done the same thing. I accedintly turned my reg up to much and on my guage, it goes to 300, it went all the way around and air started coming out of the valve, i just droped the presure unscrewed the valve then screwed it back in and it worked fine.
peace.love.unity
DasBaldDog
07-04-2002, 07:48 PM
Skog...
The solenoid will be irreparably damaged at closer to 350 psi not 240.
Anything above 240 isn't going to help it's life cycle though.
I've seen a bunch of solenoids take full co2 pressure and not be destroyed. SP must be building them better these days. Still though, I wouldn't tempt fate.
The Legend
07-05-2002, 07:15 AM
Yeah, 240 doesn't the solenoid. I've had my maxflow creep to 300 and the solenoid worked fine. Usually you can fix any problems with a solenoid just by pushing the manual button on the bottome a few times. What that does is puts a small plastic disk back in place. The disk is what makes the solenoid leak if theres too much pressure in the solenoid. Pressing the button will usually reset this disk, and allow the solenoid to function properly again. The other main problem is a weak or worn out spring.
yeah, i know i do sound a bit paranoid, but i have seen my local shop be very pissed off at all the repairs they have had to make to imp's due to the pressure being too high and damaging the solenoid, if it happens once it might not damage it irreperably, but it can't do it any good. I just prefer not to take the risk and i personally wouldn't recommend anyone to have a pressure of over 200psi on an imp (without LPR).
that's just me though, i can't help it if i don't want to damage my imp, and i also don't want people flaming me in forums sayong that my advice has damaged their markers (has happened to me before in other forums, guy took imp advice when he had a shocker=not pretty)
DasBaldDog
07-05-2002, 10:54 AM
What advice was that? Shockers in general operation of the solenoid and regulator are almost identical as the Imps.... I can't think of anything you could do on an Impulse (stock) that you can't do on a Shocker (stock)
The Legend
07-05-2002, 05:04 PM
I don't advise people to go over 200...if they don't take care of their max flow and their gun creeps it's not my fault. :)
Originally posted by DasBaldDog
What advice was that? Shockers in general operation of the solenoid and regulator are almost identical as the Imps.... I can't think of anything you could do on an Impulse (stock) that you can't do on a Shocker (stock)
advice on installing a VFF, some guy sold him a VFF and didn't tell him that it was for an imp :D, he asked in a general electro forum how to install it (not mentioning that he had a shocker) and i told him :rolleyes: , then he said that i had given him the wrong instructions and that he had seriously damaged his marker following my instructions :rolleyes: , aparently he had tried to thread some part of it (i don't know what as i'm not that up on shockers).
DasBaldDog
07-06-2002, 09:08 AM
It would be impossible to put a VFF on a Shocker. There's no place to even TRY and put it.
Dynasty_PB
07-06-2002, 09:51 AM
Originally posted by DasBaldDog
I can't think of anything you could do on an Impulse (stock) that you can't do on a Shocker (stock)
Originally posted by DasBaldDog
It would be impossible to put a VFF on a Shocker. There's no place to even TRY and put it.
:laugh:
peace.love.unity
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