If i where to get the Palmers stab, which i think im doing this weekend, would i be able to do the Fva mod. and adjust my velocity with just the PSI...

Also if i where to pick up a spring kit could i use this to bring up my velocity and then lower the psi on my reg... Wouldnt this provide lower pressure operation.

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Bump... someone knows the answer to this

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you might want to checkout the fva mod thread, that might answer your question on this subject, personally i dont know much about it.

Typically the FVA mod goes with the installation of a Palmers Regulator and an RVA. Yes you can reduce the overall pressure to your marker by adjusting the velocity with pressure. I'd start by backing your FVA out until it is flush with the inside of your power tube. Don't back it out too far or it will have the same effect as turning it in, just flush. Then adjust your velocity with your regulator. You can probably get the operating pressure down somewhere around 650 psi.

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yes you can, for both your qestions.

although remember that you cannot kist keep dropping your PSI level and hope to sustain a decent FPS with springs. an RVA would actually be your best bet. i know what you are thinking and want to be able to do and the RVA would really be a god send for you. at some point, the A-5 will not have enough psi to operate the internals which has nothing to do with FPS, the cyclone won't cycle, the sear won't reset ect...

but with a RVA, springs and palmer stabilizer i have personal experiance to believe that you can drop your PSI to 600-650 give or take and still maintain the FPS you desire. without the RVA, it will take alot of guess work with the springs each time you need to adjust if you want to do the FVA mod and lower the PSI as much as possible.

with RVA you can usually lock the FVA in place and lock the palmer stabilizer in place and never worry about them again, doing all of your velosity adjustments through the RVA. a really nice thing to ba able to do.

no just don't say you have a stock and can't use an RVA!

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I have a stock and cant use an rva :-)....
But doesnt a spring kit do ... well exactly the same thing... Increase or decrease valve opening time... Aka more or less air.

thanks! for the advice boys!

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yes, the spring can give or take away, but its not adjustible without the RVA. which is a really really nice way to control your FPS.

you don't have to have the RVA, but if you want to drop youe PSI level as much as you your marker can take then you would likely need one. its going to be hit or miss (with alot more misses) trying to find the right spring pressure.

for non-rt A-5's, i believe the ideal setup is palmer stabilizer, FVA mod or a FVA less powertube and an RVA. the ability to lower your PSI as low as your A-5 can handel, the FVA Mod or non FVA powertube will keep the A-5 shooting widew open. less PSI means less velosity of course. and then the RVA and good springs to bring the velosity back up and have good control to raise and lower it while not having to touch the FVA or Palmer Stabilizer.

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just get the gold power tube and an rva and be done with it :P
AND modify the hell out of your stock.....