Amped Airsoft Edgi 6.00 Ported Barrels

[Angus]

Hello,

Just dropping by to let everyone know that the EdGI 6.00mm Ported M4 Barrels are in stock. The price on the M4 Barrels are $75 (After taxes) If you order them and are out of state (PA), they will be $70 before taxes.

http://i591.photobucket.com/albums/ss359/AmpedAirsoft/ported%20barrels/IMG00121-20090421-2151.jpg

The 6.00mm Ported M16 Length barrels will be in later next week. 8)

If anyone is interested or would like to purchase one, please let me know. I am expecting them to go fast.

Thanks!
Angus

[Killtality]

Hmm, i may have to get one.

[AWOL]

Will the M16 length be more?

[Angus]

Will the M16 length be more?

The M16 length will be $80 before taxes.

[Locutus]

6.0?? Doesn't leave much room for error.

[TacMedic]

Given that it is a 6.00mm barrel, is there a manufacturer recommended brand of bb for optimal use in such a narrow barrel?

[Sturmtrooper]

I highly recommend G&G. They're smaller 5.95 than most 5.98
By my experience they've worked far better than AE in tighter barrels.

I've used them all day in a 6.01, excellent performance, no signs of jamming.

[Angus]

6.0?? Doesn't leave much room for error.

Sure it does. 8) The typical BB is 5.98mm. The Bio is usually 5.95+-.01. So far I have run mine 3 months without cleaning just to test it without any jams. I actually even have a 5.99mm I am running to test out. I am expecting not so good results with the typcial bb on it, but I have yet to field test it. I'll find out directly. 8) So far with the 6.00 and with at least 5 barrels out on the field now, we have 0 jams reported.

As far as typical cleaning though, I would recommend at least cleaning it once a month to make sure you are getting the best performance out of it.

Given that it is a 6.00mm barrel, is there a manufacturer recommended brand of bb for optimal use in such a narrow barrel?
I personally have used AE .28s and KSC .3s. As most of you know the KSC .3s actually have some pretty funky BBs in there. (I have sometimes found around 4 disformed BBs per bag) However, I have more than likely ran them through my guns without any jams what so ever. I also have used G&G .28 Bios through my 6.00s at Northern Wind without any hic-ups. 8)

So pretty much, I would recommend sticking with Airsoft Elites, KSCs, G&G, and Excels for your best performance. (All the popular high end BBs) I would also recommend going with much heavier BB weights, or at least nothing less than a .25g. You will see much better results as long as your hopup is setup correctly for using the heavier weights.

I highly recommend G&G. They're smaller 5.95 than most 5.98
By my experience they've worked far better than AE in tighter barrels.

I've used them all day in a 6.01, excellent performance, no signs of jamming.
I haven't used the non-bio G&Gs but I have heard that they are great. 8)

Thanks everyone. 8)
Angus

[Torque]

Are these barrels ported on 3 sides or just 2?

[Angus]

Are these barrels ported on 3 sides or just 2?

They are ported in a Y Pattern (3 sides). The top of the barrel is un-ported as to theoretically not mess with the hopup effect.

[hkrazy]

Just curious... What exactly does the porting do for the preformance of the replica?

[Sturmtrooper]

Angus told me that it equalizes air around the bb as it leaves the barrel.

I've seen the performance with those and it's pretty damn pretty. The range/accuracy is unmatched to what I've seen. They were Angus's.

[Angus]

Angus told me that it equalizes air around the bb as it leaves the barrel.

That is correct. 8) It alllows the BB to have a more stable flight path after it leaves the barrel.

[maglips]

Most M4 outer barrels are made so the inner fits in fairly tightly. It would seem like there wouldn't be much room for air to vent unless the inner barrel extended past the end of the outer. Therefore it doesn't seem like there would be much of an advantage unless you used an extended inner bbl./mock silencer set up. Have you tested anything like this?

[Scar]

Whats the length on the barrels because a M4 barrel is usually 363mm but ive seen them 407mm as well. Will there only be 2 barrel lengths or will you be able to get them in many lengths.

[Scorpion]

Most M4 outer barrels are made so the inner fits in fairly tightly. It would seem like there wouldn't be much room for air to vent unless the inner barrel extended past the end of the outer. Therefore it doesn't seem like there would be much of an advantage unless you used an extended inner bbl./mock silencer set up. Have you tested anything like this?

THIS ^^

I'd be surprised to see any benfit from having the ports covered by the outer barrel. Or perhaps you're trying to create a lower pressure area behind the BB as it exits the barrel by allowing a very small amount of air to escape.

Again I could be totally wrong, but I'm just not seeing it. :confused:


And on a side note, are you developing a PTW barrel equivalent?

[orangegeko64]

The ported barrels run a slight bit longer than a standard barrel so the ports are sitting in the flashhider instead of the outer barrel. For example, the standard 509mm M16 length is actually around 520mm if i remember correctly.

[Locutus]

Can someone tell me what purpose the "ports" serve?

[john]

quoted from angus

That is correct. 8) It alllows the BB to have a more stable flight path after it leaves the barrel

[Mavrick]

quoted from angus

That is correct. 8) It alllows the BB to have a more stable flight path after it leaves the barrel\

I think he wants to know How that is achieved.

[Locutus]

lol, yeah, I see that they say it allows it to have a more stable flight path, I am just curious how having holes at the end of your barrel actually accomplishes this.

I guess I am a bit skeptical that this actually does anything at all.

[maglips]

The purpose of ports is to vent off the air that is accelerating the bb before it (the bb) leaves the barrel. When the bb is being forced by the air it "rattles around" between the sides of the barrel. When this force is relieved and the bb is still being controlled by the length of the barrel after the ports it becomes more stable. Honestly though, I don't think EdGi has left enough barrel after the ported section, i.e. the ports are too close to the muzzle, to achieve this effect. It's a good idea, and porting does work, but for this reason and the one I stated earlier, I don't think this barrel will be all that effective. I have been wrong before though.
Furthermore, I think if there is any increase in accuracy with this barrel it is due to it's tighter tolerance. However, tighter tolerance can equate to more jams. Yes Angus, 6.00 is darn tight. If using a 5.98mm bb. that is only .02mm of clearance and .02mm<.001", making clearance roughly 1/4 the thickness of a piece of printer paper.

[john]

i think it works more like a slant flash hider on an ak47 but for different reasons

in this case i think it would even the force of the bbs back spin as it leaves the barrel and also provide an air cushion as it leaves the hop up. essentially not letting the bb be ballistic till after it left the barrel as opposed to half way through.

i just know angus knows his **** when it comes to barrels.

[maglips]

Basically you're saying it reduces muzzle rise, thats what an AK slant brake does, and it's technically not a flash hider at all. My question is.. what muzzle rise? It's an airsoft gun!! The rest of what you said doesn't even make sense. What I said about porting is fact.

[DemonicUnicorn2]

Too much extra length would increase stabilization but would also cause drag on the BB from it riding in the top of the barrel after the air accelerating the BB has been dispersed.

[coverme]

the volume of air is far too great for those vents to have any effect the better proformance is prob due to the tight bore

[Angus]

Most M4 outer barrels are made so the inner fits in fairly tightly. It would seem like there wouldn't be much room for air to vent unless the inner barrel extended past the end of the outer. Therefore it doesn't seem like there would be much of an advantage unless you used an extended inner bbl./mock silencer set up. Have you tested anything like this?

The ported barrels are made to be used in either a flash hider that is open enough to let air vent or in a moch suppressor or barrel extension. If the ports are covered, I have found that it seems to impact the performance of the barrel slightly.

Here are some pictures of my URX with the 6.00 installed. My Shrike has one installed with a suppressor with similar performance.

http://i591.photobucket.com/albums/ss359/AmpedAirsoft/ported%20barrels/600-ported-1.jpg?t=1248927182

http://i591.photobucket.com/albums/ss359/AmpedAirsoft/ported%20barrels/600-ported-2.jpg?t=1248927180
Whats the length on the barrels because a M4 barrel is usually 363mm but ive seen them 407mm as well. Will there only be 2 barrel lengths or will you be able to get them in many lengths.
The length on the M4 is 407mm. I modeled it after the Classic Army M15A4 Carbine to get an approximate length.

I will eventually get more barrels in different lengths. I am also going to get non-ported ones so that users don't have to worry about having the ports exposed.

THIS ^^

I'd be surprised to see any benfit from having the ports covered by the outer barrel. Or perhaps you're trying to create a lower pressure area behind the BB as it exits the barrel by allowing a very small amount of air to escape.

Again I could be totally wrong, but I'm just not seeing it. :confused:


And on a side note, are you developing a PTW barrel equivalent?
I explained this above. 8) So far, I have only seen a negative effect with the porting covered inside the barrel. (I tried this in my Shrike with the ports hidden by the out barrel.) It's performance wasn't severely hindered, but it was slightly noticeable in the groupings at max range.

On the note of PTWs, I do intend to have PTW barrels made in the future. Stay tuned. 8)
The purpose of ports is to vent off the air that is accelerating the bb before it (the bb) leaves the barrel. When the bb is being forced by the air it "rattles around" between the sides of the barrel. When this force is relieved and the bb is still being controlled by the length of the barrel after the ports it becomes more stable.

To answer Locutus, Maglips did a pretty good job at answering this.

Honestly though, I don't think EdGi has left enough barrel after the ported section, i.e. the ports are too close to the muzzle, to achieve this effect. It's a good idea, and porting does work, but for this reason and the one I stated earlier, I don't think this barrel will be all that effective. I have been wrong before though.

Hmmm, I could have him put the ports earlier in the barrel, but you would definitely have to have a longer suppressor on it so that the ports are exposed. The only thing I would be worried about would be the BB dragging on the barrel before it leaves, however, maybe it would increase the performance as you said. I have yet to try a 6.00 without ports and intend to. I decided to go with the porting because I had read where the porting enhanced the performance of the sniper barrels that he makes. I also read that the general consensus from owners of these barrels said that it worked. So I figured why not try it and see. Needless to say, I really like the results. 8)


Furthermore, I think if there is any increase in accuracy with this barrel it is due to it's tighter tolerance. However, tighter tolerance can equate to more jams. Yes Angus, 6.00 is darn tight. If using a 5.98mm bb. that is only .02mm of clearance and .02mm<.001", making clearance roughly 1/4 the thickness of a piece of printer paper.
This could be, I truly won't know until I put them up against a non-ported 6.00mm Barrel, which I intend to do soon. All I know is that it definitely has more stability than my traditional 6.01s that I am used to.

I got to try out my 5.99mm ported and determined that it is definitely too tight for conventional use, however... for Bio uses, it would probably be great. I am going to field it with bios and see how it does. If it works how I think it will, I'll probably use it for Ops that require Bios. Interestingly enough though, the barrel did not jam, but it had a sometimes unpredictable flight path, which made me believe that perhaps it was the KSC .3s and it would require the use of a more precise BB. I intend to get my hands on some BioVals this Fall when they restock in the US. (I am now a distributor btw).

Too much extra length would increase stabilization but would also cause drag on the BB from it riding in the top of the barrel after the air accelerating the BB has been dispersed.

That is what I would be afraid of, but I am not afraid to try it to find out. 8)

Thank you for every ones feed back. 8)

[maglips]

Angus, thanks for your reply. The ported barrel is definately an interesting concept and if you would report back on your findings after conducting further tests I, and I'm sure many others, would be interested to know what you find.
I have to admit my scepticism about the current design. However I think this could have promise with some tweaks.
To be absolutely fair, I should also mention to all who read this thread that everything I have stated previously about this barrel is based on what I can see in the picture. I have never used one of these and have no experience with a ported AEG barrel. I do have a good understanding of how porting works (mostly from PB barrels) and am familiar with the concept, but my skepticism could be unfounded. Who knows, EdGi might really be on to something here. Time will tell.

[NH_Nitemare]

Just to add to this as I see that angus and maglips have stated very well what the ported barrel does in the aspect they have stated. But also, I don't think many have thought about this, but porting the barrel will also remove turbulence from around the bb. I believe that some air will escape the barrel before the bb does, the dispersing air will cause a small amount of turbulence just outside the barrel, which your bb will have to "plow" through. Turbulence is bad for aerodynamics, causes drag. I believe my thinking is right on this, if NH_Viper or other mechanical/fluid engineers want to back me up on this, that would be appreciated.

Angus with the ported barrel does the hop up have an increased effect, as in do you have to dial it down more than you would with a normal barrel?

[maglips]

Just to add to this as I see that angus and maglips have stated very well what the ported barrel does in the aspect they have stated. But also, I don't think many have thought about this, but porting the barrel will also remove turbulence from around the bb. I believe that some air will escape the barrel before the bb does, the dispersing air will cause a small amount of turbulence just outside the barrel, which your bb will have to "plow" through. Turbulence is bad for aerodynamics, causes drag. I believe my thinking is right on this, if NH_Viper or other mechanical/fluid engineers want to back me up on this, that would be appreciated.

Angus with the ported barrel does the hop up have an increased effect, as in do you have to dial it down more than you would with a normal barrel?

Are you saying it will increase or decrease turbulence? It should decrease it.

[NH_Nitemare]

Are you saying it will increase or decrease turbulence? It should decrease it.

Decrease Tubulence.

I believe the ports will allow most of the air that would escape from the barrel first, thus as you said maglips creating cleaner air. The turbulence is actually small air swirls, this creates multi-directional forces that can act against the bb. Therefore air turbulence creates friction on the bb.

Therefore with the reduction of turbulence at the end of the barrel, there will be less friction on the bb at the exit of the barrel. This is why I asked if the hop up is more effective with a ported barrel, the bb doesn't need as much spin when it is in cleaner air, hence why it takes X amount of feet before the bb "climbs" with the hop all the way up.

That is my engineering opinion, anyone want to second?

[MFP]

NH

If im understanding the physics of this barrel correctly, the ports are to reduce the turbulence behind the bb so that it will not be pushed off course. Draw a barrel in your mind. now picture the ports. Then picture the air currents behind them some are traveling parallel with the barrel others are crashing into the sides of the barrel and going every which way. The ports are ment to take away these currents so that there is only a one directional airflow.

Basically it removes all the vector forces that are not parallel with the barrel thus creating a much less turbulent exit from the barrel. As in air will be moving in a linear fashion as opposed to pushing the outsides of the bb in odd directions

You had the right idea.