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At2k Tank Extension

Ranges are in!

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#26 perezinthenet

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Posted 12 November 2008 - 08:40 PM

So if I expanded an AT2K tank to the size of a SM5K tank it wouldnt get the same ranges?
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#27 TantumBull

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Posted 12 November 2008 - 09:10 PM

So if I expanded an AT2K tank to the size of a SM5K tank it wouldnt get the same ranges?


Nope, different air release speed.
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#28 Foamfoot

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Posted 12 November 2008 - 09:32 PM

you should of totally of used plumbers goop over the hot glue.

I didn't happen to have any on hand when I did it. If I ever redo it plumbers goop is going on.


Trust me, you WILL be doing this over again, not because it's bad or anything, but I had to redo my YSMANL (3k and bbbb integ, in the directory) and it was mainly the hot glue. You're gonna end up doing it over again about every 50 shots (depending on how long air stays in the tank, and how much you pump it)
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#29 bamblack2000

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Posted 12 November 2008 - 09:35 PM

Can someone explain this black rubbed thing to me. I understand why you need it for the goo gauge but once you remove it isn't it useless?

Bigger would be better. But you could use all sorts of CPVC adaptors to make it more versitable

From;

[]
[]
[]
[]
[]
[]
[]
[]
[]
[]
[]
[]
[]
[]
[]
/---------------\
\---------------/

To
===========::==========
===========::==========
/---------------\
\---------------/

/---\ =gun
other stuff= cpvc extensions

Edited by bamblack2000, 12 November 2008 - 09:36 PM.

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#30 Vistagecko

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Posted 12 November 2008 - 09:51 PM

Oh I see, you want to use an elbow to curve the tank at a horizontal angle right? That's not a bad idea the 6 in vertical tank is kind of awkward.

Good idea.

The black thing creates a seal from the At2k original tank to your new tank. From what I understand from the feedback I've received, you can create a bigger hole than my small hole, but I haven't experimented with them yet.

Edited by Vistagecko, 12 November 2008 - 09:53 PM.

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QUOTE(The Kart Racing Nerf Man @ May 6 2009, 07:31 PM) View Post

I lubed it again and again, I don't see what an extra 2 centimeters does. I don't think I will cut it off.
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#31 perezinthenet

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Posted 13 November 2008 - 06:09 AM

So if I expanded an AT2K tank to the size of a SM5K tank it wouldnt get the same ranges?


Nope, different air release speed.

would the ranges even be close?
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#32 imaseoulman

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Posted 13 November 2008 - 07:48 AM

So if I expanded an AT2K tank to the size of a SM5K tank it wouldnt get the same ranges?


Nope, different air release speed.

would the ranges even be close?

If that was the only mod you did to the AT2K, no the ranges wouldn't even be close.
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#33 nightfinder

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Posted 13 November 2008 - 07:59 AM

What do you replace the black thing with?
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#34 mystefansdontflystraight

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Posted 13 November 2008 - 12:17 PM

CRAP!!!!! That is amazing. The cursing is because ever since I started using AT2Ks as my primaries, I have removed the goo gauge. I chop them off and glue the tubing directly into the tank.
I do have 2 stock ones, so I will most likely try this. I can't on my primary 2k as it is RSCB'd but the others, why not. It seems to work. Excellent job.
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QUOTE(Blacksunshine @ Dec 24 2009, 02:15 PM) View Post

QUOTE(white moonlight @ Dec 23 2009, 01:29 PM) View Post

It's just screaming to be rearloading...

I seen a movie about that once.



#35 Daniel Beaver

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Posted 13 November 2008 - 12:35 PM

I would like to see a video of a range test. The tiny little hole that connects the goo gauge to the tank ought to cause huge friction losses. I am extremely skeptical that this mod would have any effect on range. But if it does really work, I would be very pleased - I may try this myself just to see what happens (it is not a very destructive mod).
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#36 angelof DEATH182

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Posted 13 November 2008 - 01:14 PM

What do you replace the black thing with?

By "Replace" he means that you have to put the black thing back in or the Googauge will leak.
to the mod, damn, I wish you'd done this before I lopped the Googauge off of my 2k, looks neat if a bit bulky.
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#37 Connor

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Posted 13 November 2008 - 03:58 PM

Dude that thing must hurt like a bitch! It broke your window Holy crap I'M SO DOING THIS.

Edited by Connor, 13 November 2008 - 03:59 PM.

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#38 Langley

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Posted 13 November 2008 - 04:28 PM

imaseoulman covered most of the inaccurate assumptions so far, but there are still a few points being missed.

First, the black membrane. The liquitron gauge is separated from the air tank with this membrane. It allows the pressure of the tank to transfer into the gauge, making the goo in the gauge rise when the pressure increases, and making the bubble of air denser, and thus smaller. When you break this seal and drain the goo, you increase the guns air capacity, but the air still needs to flow through the relatively narrow channel in between the gauge and the air tank to get to the barrel, which may reduce the air flow enough to prevent the extra air from the expansion tank to get to the dart fast enough to increase the force applied to the dart.

Second, the effect of an expanded tank. Lets say you could put a cpvc pipe directly in the main air tank of the at2k, so you don't have to worry about reduced air flow. If you keep the same barrel length, there will only be a small increase in range because a larger tank at the same pressure will depressurize more slowly, so the pressure will be slightly higher when the dart reaches the end of the barrel. If you want a substantial range increase, you need the increase the length of your barrel. If you increase the barrel length, you can utilize the additional air in the tank to apply force to the dart over a longer period of time. The longer force is applied to the dart, the more it accelerates, and the farther it goes.

(btw, as long as the mass of the dart remains constant, the velocity of a dart, the distance it travels, and the force it imparts when it hits a target are all proportional to each other. So a gun can't have better range with less velocity. You can't fire a dart faster without it traveling farther and hitting harder. If you suspect that this has happened, you're darts have more or less drag, or greater or less mass.)
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#39 imaseoulman

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Posted 13 November 2008 - 07:57 PM

Thanks for the support Langley.

(btw, just another constant to throw in with your proportional explanation: atmosphere. As atmosphere decreases and initial velocity remains constant, the projectile travels further...NERF IN THE ROCKIES!!!).
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#40 TimmyTown

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Posted 13 November 2008 - 08:25 PM

Thanks for the support Langley.

(btw, just another constant to throw in with your proportional explanation: atmosphere. As atmosphere decreases and initial velocity remains constant, the projectile travels further...NERF IN THE ROCKIES!!!).


Thats why all my guns are incredible!

No really though, I can get 120 out of my splitfire. It's nice living in the mountains. Except our nerf season is incredibly random, makes planning wars very difficult.

Colorado is known for its insane weather changes. It can go from 80 to 30 and snowing in an hour.

It can rain incredibly hard for half an hour and then be 90 for the rest of the day. The wind can pick up and ruin any chance of nerfing whatsoever (like it is now :P )

Probably the most insane weather change I have experienced here was a day when it was 90 degrees and we were at the pool when it started hailing golf ball size hailstones denting cars, breaking windows, and causing concussions.

Many a day at the pool is interrupted by snow, hail, sleet, or rain.

But our darts fly farther, so ha!
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QUOTE(rork @ Mar 16 2009, 05:30 PM) View Post

I, too "have recon," as they say. I get him in old country. Then I realize he sucks like bog. So I trade him for potato.

#41 bamblack2000

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Posted 13 November 2008 - 10:36 PM

Thats why all my guns are incredible!

No really though, I can get 120 out of my splitfire. It's nice living in the mountains. Except our nerf season is incredibly random, makes planning wars very difficult.

Colorado is known for its insane weather changes. It can go from 80 to 30 and snowing in an hour.

It can rain incredibly hard for half an hour and then be 90 for the rest of the day. The wind can pick up and ruin any chance of nerfing whatsoever (like it is now <_< )

Probably the most insane weather change I have experienced here was a day when it was 90 degrees and we were at the pool when it started hailing golf ball size hailstones denting cars, breaking windows, and causing concussions.

Many a day at the pool is interrupted by snow, hail, sleet, or rain.

But our darts fly farther, so ha!


Why thanks for the useless post.

On topic: You do need to cut a hole in the center of the black thing if you do this right? Cause I forgot and want to know if I need to.
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#42 TimmyTown

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Posted 14 November 2008 - 12:36 AM

Why thanks for the useless post.

On topic: You do need to cut a hole in the center of the black thing if you do this right? Cause I forgot and want to know if I need to.


Thanks for the support Langley.

(btw, just another constant to throw in with your proportional explanation: atmosphere. As atmosphere decreases and initial velocity remains constant, the projectile travels further...NERF IN THE ROCKIES!!!).



"Never question the relevance of truth, but always question the truth of relevance" Craig Bruce.

My post was completely relevant to the topic at hand, substantial proof that what soulman said is entirely true.

Please do not be so quick to attack others, especially when you are ignorant to the reasons behind their actions or the intended outcome.

Now back to tank expansions! I wanted some ranges on this, some substantial testing that proved it was worth doing anything.

Edited by TimmyTown, 14 November 2008 - 12:36 AM.

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QUOTE(rork @ Mar 16 2009, 05:30 PM) View Post

I, too "have recon," as they say. I get him in old country. Then I realize he sucks like bog. So I trade him for potato.

#43 Daniel Beaver

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Posted 14 November 2008 - 09:41 AM

I'll try to do something formal this weekend, since I have a couple of at2k's with their good tanks attached laying around.
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#44 Vistagecko

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Posted 16 November 2008 - 01:05 PM

Ranges are up. About 100' flat. I still need to widen the hole in the black thing.
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QUOTE(The Kart Racing Nerf Man @ May 6 2009, 07:31 PM) View Post

I lubed it again and again, I don't see what an extra 2 centimeters does. I don't think I will cut it off.
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#45 nightfinder

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Posted 16 November 2008 - 07:33 PM

Ranges are up. About 100' flat.

Without the pump plugged?
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#46 Banshee

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Posted 16 November 2008 - 07:41 PM

100 feet? Is this singled or turreted?? My singled gets about 100ft flat and my turreted gets about 80ft.
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#47 nightfinder

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Posted 16 November 2008 - 07:50 PM

100 feet? Is this singled or turreted?? My singled gets about 100ft flat and my turreted gets about 80ft.

READ his is singled
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#48 Vistagecko

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Posted 16 November 2008 - 08:16 PM

Yeah singled, no pump plugged, and a 4 inch PETG barrel. As you can see with a longer barrel, and a plugged pump you could get significantly better ranges.
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QUOTE(The Kart Racing Nerf Man @ May 6 2009, 07:31 PM) View Post

I lubed it again and again, I don't see what an extra 2 centimeters does. I don't think I will cut it off.
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#49 Banshee

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Posted 16 November 2008 - 10:33 PM

100 feet? Is this singled or turreted?? My singled gets about 100ft flat and my turreted gets about 80ft.

READ his is singled

Don't be a chode...

Yeah singled, no pump plugged, and a 4 inch PETG barrel. As you can see with a longer barrel, and a plugged pump you could get significantly better ranges.

Well I'd like to hear some ranges of one withe a good barrel on it and a plugged pump.
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#50 bamblack2000

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Posted 16 November 2008 - 10:35 PM

Well I'd like to hear some ranges of one withe a good barrel on it and a plugged pump.


I don't recommend plugging that pump. Too much power with a plugged pump is not good. What do you mean by good barrel? Like brass?
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