steve_ext2k3

Just bought a Ext Pro with Eforce Grip.
I was wondering what steps i should take in running it low pressure?
Another thing what is better the stock ram air chamber(what does it actually do?) or a Shocktech Low Pressure Chamber?
Any assistance would be great...
Thanks

SEFishy

it does basicly nothing, i got my rebel chamber to help out my old reg with its lack of recharge rate. to get the pressure as low as u should start with a nice reg(not the one that came with the ). then get nitro as u know co2 wont stay regulated for long. then a bolt, boss bolt is still the best. then comes the valve. the turbo valve is nice i like it. though there are a few better ones out there. that should about do it. this will bring it down to shotting 280fps at 100psi at 13bps constant with no problems. there are a few more things u can get to help it but its more of a waste. such as a lighter hammer. also drilling out your asa and vtl asa can help too. oh and dont forget the barrel. with low pressure ur going to get less shots per tank so the longer and more ported the barrel is the more shots per tank u lose

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steve_ext2k3

are Shocktech Inline regs any good???

SEFishy

there decent but there are better ones out there. i use a bob long torpedo reg and i personaly love it

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Phoenixsc2

lower pressure gets you less shots? Whats the point of low pressure then?

onesikpup

less ball breakage, quieter operation, less stress on sear and hammer.

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FEEDBACK

Phoenixsc2

Ohhh, I thought the less pressure you used the less gas you used. I get it now, thanks.

joeyk803c

With the correct lp set-up you'll get more shots per fill.

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Meh

SEFishy

/\ its impossible. lower the pressure the more air it will take to get the ball up to the same speed, there for less shots per tank then a higher pressure gun

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Alpha

Less pressure, but more volume

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joeyk803c

No it is not impossible. Different markers get different effiency rates. Some when made to operate at a lower psi will use less air.

If you were to take a Piranha, put a new high flowing valve in it, a lighter or modded hammer, high flow valve pin, and lighter bolt you will lower the psi needed to operate the marker.



Some markers operate at a higher pressure better(mags for instance) and some at a lp(timmies).

I have 2 stock spyders that are my brothers and they never use them. I have an extra hammer. I'll tell you this. One of them I will leave totally stock, the other I will remove the venturi, port the valve, polish the internals, drill larger holes in the VA and mod the hammer. I will then test out which one gets more shots per fill on a tank.

My piranha stock comes with better, more high flowing parts than a spyder. It operates at a slightly lower pressure. I usually get anywhere from 30-40 more shots on any size tank than a stock spyder. Why b/c my fishy uses less air to cycle so there is more air later to cycle.

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Meh

Alpha

Not true.. Generally speaking, the more the volume, or space the air takes up, the lessthe pressure.

[ x x x ] The x's are molecules. They have room to move around
[xxx] Check out the molecules now, they have less VOLUME, as a result, pressure is increased.. Well its not really as a result. IT could be the other way around. Pressure is changed as a result of changing volume.

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onesikpup

dont get me started on why a fish doesnt operate too well on an aftermarket hammer....

sure you can do all those mods to it, but it will still more than likely use more air. im not exactly sure, but blowbacks dont exactly "store" unused air. the whole point of LP is to lower the pressure, but in doing so, you must allow for the fact you need more air (thats why the high flow pin and drilling out the asa and VA and turbo valve). you simply increase air usage, while you are still using less pressure.

its really a complicated little deal to figure out the exact formula....its also really based on your particular gun and what you have done to it. you may not lose much efficiency, but it is not very likely that you will decrease air usage per shot with LP setup.

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FEEDBACK

joeyk803c

You are right alpha, I was half-asleep and trying to think.

Aftermarket hammers are useless, I already know that.

I will mod the spyder and see the results. If I am wrong, I am wrong. If I am right, I am right. First thing I gotta do though is finish milling my Rainmaker body.

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Meh

Alpha

I dont know if its been mentioned, but polishing internals is an essential for any blowback transforming into low pressure. It reduces friction and increases fps, therefore allowing less air to be used to get to the same velocity.

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Phoenixsc2

Polishing internals is something that can be done with like a rotary tool and some polishing compound? Or does that need to be done professionally?

onesikpup

this is something you can do. i dont know of any pro polishers...check out www.ottersccustoms.com , theres a real good walk thru on what to do and what to use. i know it says spyders...but fish are the same.

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FEEDBACK

joeyk803c

I think it was Mothers Mag polish it waht abunch of people use. The easiest thing to do polish the internals with is a dremel. I did it to my piranha, rebel and the spyder I will go LP on.

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Meh

Phoenixsc2

Wow, amazing site, thanks!

SEFishy

u dont have to polish internals. my piranha runs on 80psi without the internals polished.

low pressure works like this...

u have a gun running at 800 psi with the stock parts, shooting at 280 fps

u then turn the gun down to 500 psi without changing nothing else. in effect there is less pressure pushing the internals forward. resulting in a fps drop.

now if you turn the valocity back UP to 280 fps you will be using more air then you would have at 800 psi

now if u take the stock setup at 800 psi and added a lighter bolt and hammer, the result would be shooting overly fast. less weight so the gun will shoot faster then it would normaly

thus the reason y no matter what you do to the gun. high pressure guns will always get more shots from a tank then a low pressure gun. but, that doesnt mean its safe lol. running 800 fps through a shocker isnt a good idea.

now you say the piranha would get more shots then the spyder. that could be true for many reasons. anything "high-flowing" will allow more air to the gun at all times. thus allowing the pressure to go lower. now if you turn the pressure up the high flow would allow more air into the gun allowing better shots per tank, just because it will take less pressure to reach the same speed. Course this is only true if all parts in the gun are the same.

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