BB machine gun - Revision history

Jackssmirkingrevenge: /* Typical Performance */

2011-02-15T14:25:50Z

Typical Performance

← Older revision		Revision as of 09:25, 15 February 2011
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	== Typical Performance ==		== Typical Performance ==

	The rate of fire for the average gun is very high, in the vicinity of 30 to 100 rounds per second (RPS), 1800 to 6000 rounds per minute, comparable to that of a [http://en.wikipedia.org/wiki/Minigun ~~Minigun~~] ~~which clocks in at 33~66 RPS~~.		The rate of fire for the average gun is very high, in the vicinity of 30 to 100 rounds per second (RPS)- 1800 to 6000 rounds per minute, comparable to that of a [http://en.wikipedia.org/wiki/Minigun modern gatling type machinegun].

	BBMGs in general are not usually capable of sustained full performance fire as most air sources cannot provide an adequate flow of sufficiently high pressure air. To reduce air consumption, maintain muzzle velocity and to reduce the rate that the ammunition is expended they are typically fired in short bursts lasting a few seconds at most.		BBMGs in general are not usually capable of sustained full performance fire as most air sources cannot provide an adequate flow of sufficiently high pressure air. To reduce air consumption, maintain muzzle velocity and to reduce the rate that the ammunition is expended they are typically fired in short bursts lasting a few seconds at most.
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	'''Airsoft BBMG Performance'''		'''Airsoft BBMG Performance'''

	Airsoft BBMGs are known for their especially high rate of fire. This is in the region of 30 to 115 rounds per second (RPS), 1800 to 6900 rounds per minute. This is useful in Airsoft skirmishes for laying down suppressive fire or clearing out multiple targets up close. ~~The~~ projectile speeds of around 250-400 Feet Per Second(FPS) are comparable to higher end Airsoft Electric Guns or AEGs. The advantage of the high ROF is quite clear in skirmishes however the consumption of such a high volume of pellets can be expensive.		Airsoft BBMGs are known for their especially high rate of fire. This is in the region of 30 to 115 rounds per second (RPS), 1800 to 6900 rounds per minute. This is useful in Airsoft skirmishes for laying down suppressive fire or clearing out multiple targets up close. Typical projectile speeds of around 250-400 Feet Per Second(FPS) are comparable to higher end Airsoft Electric Guns (AEGs). The advantage of the high ROF is quite clear in skirmishes however the consumption of such a high volume of pellets can be expensive.

	Other disadvantages of using BBMGs in airsoft lies in their portability and range. Portability can be fixed by using an external CO<sub>2</sub> setup for the gas supply however it can be costly. The other problem of range is due to the lack of a hop-up system which creates backspin on the BB and so increase the distance they can fly. Although possible to add a hop-up they wear down quickly because of the high ROF.		Other disadvantages of using BBMGs in airsoft lies in their portability and range. Portability can be fixed by using an external CO<sub>2</sub> setup for the gas supply however it can be costly. The other problem of range is due to the lack of a hop-up system which creates backspin on the BB and so increase the distance they can fly. Although possible to add a hop-up they wear down quickly because of the high ROF.
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	These BBMGs are unregulated by airsoft limitations of plastic pellets as they are not intended to be fired at other people.		These BBMGs are unregulated by airsoft limitations of plastic pellets as they are not intended to be fired at other people.

	With 3 foot length of 1/4" OD (3/16" ID) stainless steel tubing, a 120 PSIG 3 gallon shop compressor and firing standard ~~copper or~~ steel BBs, a typical vortex BBMG has a muzzle velocity of about [http://www.inpharmix.com/jps/Jims_chrono.html 330 FPS]. This is about the same as a cheap commercial single shot BB gun. The muzzle energy for an 0.177" metal BB (0.33g) at 330 FPS is 1.2 foot-pounds (1.7J). Despite the relatively low projectile speed, the abrasive effects of a large number of hard BBs striking a target in a short period of time can be quite destructive.		With 3 foot length of 1/4" OD (3/16" ID) stainless steel tubing, a 120 PSIG 3 gallon shop compressor and firing standard steel BBs, a typical vortex BBMG has a muzzle velocity of about [http://www.inpharmix.com/jps/Jims_chrono.html 330 FPS]. This is about the same as a cheap commercial single shot BB gun. The muzzle energy for an 0.177" metal BB (0.33g) at 330 FPS is 1.2 foot-pounds (1.7J). Despite the relatively low projectile speed, the abrasive effects of a large number of hard BBs striking a target in a short period of time can be quite destructive.

	The high ROF can consume pellets at an expensive rate. A six pound container of 6000 metal BBs costs about $15. At 50 RPS that six pound container will last for two minutes of firing.		The high ROF can consume pellets at an expensive rate. A six pound container of 6000 metal BBs costs about $15. At 50 RPS that six pound container will last for two minutes of firing.

Jackssmirkingrevenge at 07:26, 12 February 2011

2011-02-12T07:26:23Z

← Older revision		Revision as of 02:26, 12 February 2011
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	A '''BB Machine Gun''' (BBMG) is a device designed to shoot a large volume of small diameter [[~~ammo~~]], typically plastic airsoft or steel BBs. BBMGs are pneumatic guns but unlike single shot [[pneumatic launcher\|launchers]] they require a constant gas supply to function. The common use of a large air [[compressor]] restricts mobility for the majority of BBMGs although models using CO<sub>2</sub> systems have been successfully built as portable units.		A '''BB Machine Gun''' (BBMG) is a device designed to shoot a large volume of small diameter [[ammunition]], typically plastic airsoft or steel BBs. BBMGs are pneumatic guns but unlike single shot [[pneumatic launcher\|launchers]] they require a constant gas supply to function. The common use of a large air [[compressor]] restricts mobility for the majority of BBMGs although models using CO<sub>2</sub> or HPA systems have been successfully built as portable units.

	The basic principle of most BBMGs is the injection of pressurised gas into a chamber full of spherical ammunition, which is agitated and leaves the barrel accordingly.		The basic principle of most BBMGs is the injection of pressurised gas into a chamber full of spherical ammunition, which is agitated and leaves the barrel accordingly.

Jackssmirkingrevenge: /* Design Characteristics */

2011-02-12T07:25:20Z

Design Characteristics

← Older revision		Revision as of 02:25, 12 February 2011
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	== Design Characteristics ==		== Design Characteristics ==

	The performance of a BBMG, as with any gun, depends on specific characteristics. ~~For BBMGs, perhaps the most important are;~~		The performance of a BBMG, as with any gun, depends on specific characteristics.

	* Air supply [[pressure]]
	* Sustainability of the supply pressure
	* Air flow from supply to barrel
	* Barrel length
	* The fit of the BBs in the barrel

	Most of the characteristics that make a good pneumatic spudgun also apply to BBMGs. As with any pneumatic gun, the higher the reservoir pressure and the longer the barrel (up to a point) the greater the [[muzzle velocity]]. Because of the large amount of compressed gas that is wasted in a typical BBMG, the air supply ~~needs to be fairly substantial. For air supplies with a resevoir such as compressors this can mean~~ [[~~CB ratio~~]]~~s of 100:1 to 1000:1. Note that, for a BBMG, the "chamber volume" includes the volume of the compressor~~'~~s reservoir.~~		'''Air supply [[pressure]] and flow'''

	~~The BBs should fit~~ the ~~barrel well enough~~ to ~~minimize leakage of air around~~ the ~~projectile (~~[[~~blowby~~]]~~) but not so tightly that friction is excessive~~. ~~Herewith~~ the ~~result of an experiment in order~~ to ~~quantify performance loss due~~ to ~~leakage around the projectile~~:		Most of the characteristics that make a good pneumatic spudgun also apply to BBMGs. As with any pneumatic gun, reservoir pressure is directly proportional to the [[muzzle velocity]]. As BB chambers tend to be fairly substantial in volume which is effectily [[dead space]], there is considerable pressure loss between the valve and the barrel as the process is analogous to a trying to pour water in a bucket with a hole in it. This can be mitigated by:

	The basic setup was two 15 inch lengths of barrel tubing, one was aluminium with an I/D of 5mm, while the other was a straighted piece of coiled copper tubing with an I/D of 4.5mm. The barrels were hooked up to a blowgun attached to a compressor and used to fire lead BBs - ~~with~~ a ~~nominal diameter of 4.5mm - at 100 psi through a chronograph. Over a 5 shot string~~, the ~~5mm I/D barrel averaged 242 feet per second, whilst the 4.5mm I/D barrel averaged 279 feet per second. With an average projectile weight of 8 grains, this gives~~ a ~~muzzle energy of 1.04 and 1.38 ft/lbs respectively - a significant power increase of 33% over~~ the ~~wider~~ barrel.		- using a high flow valve, forcing air into the chamber at a faster rate than is escaping through the barrel

	~~The chambering and firing of BBs in~~ a ~~cloud BBMG appears~~ to ~~be a coupled process. Usually, when a BB is passing through~~ the ~~barrel~~ the ~~reduced air flow through the gun inhibits the loading of the next BB into~~ the barrel~~. When the first BB leaves the barrel the increase in air flow "chambers" the next BB. As a result~~ it ~~appears that there~~ is rarely more than one BB in the barrel at a time. This suggests that the muzzle velocity and ROF of cloud BBMGs are linked. The ROF for a gun would appear to be often very close to the reciprocal of the barrel transit time for a BB.		- using a [[detent]] to hold the projectile at the breech, blocking off the barrel and allowing pressure to build up before it is released

	~~For example~~, a ~~3 foot~~ barrel that ~~fires~~ at ~~300 FPS has~~ an average ~~barrel velocity~~ of ~~~150 FPS and~~ a ~~transit time~~ of ~~~20mS~~. ~~The ROF would be expected to be about~~ 1/~~20mS = 50 RPS~~. ~~Design changes that alter~~ the ~~transit~~ time ~~would be expected to also change~~ the ~~ROF. When adding~~ the ~~feeding system~~ of a ~~vortex block this becomes less~~ of a ~~problem because vortex blocks are more~~ of a ~~forced air system rather than~~ a ~~suction system such as cloud BBMGs~~.		- [http://i164.photobucket.com/albums/u28/hw97karbine/misc/bbstrafer.jpg storing the BBs directly in the pressure chamber], both passing through the valve meaning there is effectively no dead space

			- using a smaller BB chamber, though this means a corresponding reduction in ammunition capacity

			'''Barrel tightness'''

			The BBs should fit the barrel well enough to minimize leakage of air around the projectile ([[blowby]]) but not so tightly that friction is excessive. Even small differences in diameter can have significant effects on performance. An attempt to quantify this power loss was made in [http://www.spudfiles.com/spudtech_archive/viewtopic.php?f=18&t=8544&hilit=4.5mm+5mm this experiment]

			Two 15 inch lengths of barrel tubing were used, one was aluminium with an I/D of 5mm, while the other was a straighted piece of coiled copper tubing with an I/D of 4.5mm. The barrels were hooked up to a blowgun attached to a compressor and used to fire lead BBs - with a nominal diameter of 4.5mm - at 100 psi through a chronograph. Over a 5 shot string, the 5mm I/D barrel averaged 242 feet per second, whilst the 4.5mm I/D barrel averaged 279 feet per second. With an average projectile weight of 8 grains, this gives a muzzle energy of 1.04 and 1.38 ft/lbs respectively - a significant power increase of 33% over the wider barrel.

			'''Barrel length'''

			The longer the barrel, the more time the BB is under the influence of gas pressure and therefore accelerates further. Due to BBMGs usually fed with gas supply massively disproportionate to barrel volume, making normal pneumatic [[Chamber to barrel ratio]] concerns irrelevant. However, there does appear to be a relationship between barrel length and rate of fire in BBMGs, in that a fresh BB is usually not fed into the barrel before the previous BB escapes the muzzle, therefore a longer barrel would tend to reduce rate of fire. If a detent is fitted at the breech, is is possible that the breech is blocked off by a following BB before the previous BB leaves the barrel, at best resulting in lower power and at worst leading to a collision inside the barrel which could lead to damage.

	== Typical Performance ==		== Typical Performance ==

Jackssmirkingrevenge: /* Common Designs */

2011-02-12T06:21:58Z

Common Designs

← Older revision		Revision as of 01:21, 12 February 2011
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	* An [[Inline Vortex BBMG]] uses the same [[vortex block]] from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.		* An [[Inline Vortex BBMG]] uses the same [[vortex block]] from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.

	* A [[Vortex cap BBMG]] works on an identical principle to a vortex block but instead of a cut-out in a block placed within a large BB chamber it uses the circular internals of a pipe endcap in which to swirl the BBs allowing for a smaller diameter chamber. This potentially allows for a smaller overall design. ~~It was designed by Gatorlangman AKA DavidVaini~~.		* A [[Vortex cap BBMG]] works on an identical principle to a vortex block but instead of a cut-out in a block placed within a large BB chamber it uses the circular internals of a pipe endcap in which to swirl the BBs allowing for a smaller diameter chamber. This potentially allows for a smaller overall design as in [http://www.spudfiles.com/forums/rc-p240-vortex-cap-bbmg-p90-t12907.html this example]

	== Design Characteristics ==		== Design Characteristics ==

Jackssmirkingrevenge at 15:02, 13 December 2010

2010-12-13T15:02:07Z

← Older revision		Revision as of 10:02, 13 December 2010
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	A '''BB Machine Gun''' (BBMG) is a device designed to shoot a large volume of small diameter [[ammo]], typically plastic airsoft or steel BBs. BBMGs are pneumatic guns but unlike single shot [[pneumatic launcher\|launchers]] they require a constant gas supply to function. The common use of a large air [[compressor]] restricts mobility for the majority of BBMGs although models using CO<sub>2</sub> systems have been successfully built as portable units.		A '''BB Machine Gun''' (BBMG) is a device designed to shoot a large volume of small diameter [[ammo]], typically plastic airsoft or steel BBs. BBMGs are pneumatic guns but unlike single shot [[pneumatic launcher\|launchers]] they require a constant gas supply to function. The common use of a large air [[compressor]] restricts mobility for the majority of BBMGs although models using CO<sub>2</sub> systems have been successfully built as portable units.

			The basic principle of most BBMGs is the injection of pressurised gas into a chamber full of spherical ammunition, which is agitated and leaves the barrel accordingly.

			The principle can be seen in its most basic form, the "cloud" configuration, in [http://youtube.com/watch?v=_GMMbyJbUQM this 1000 frame per second video] by [http://www.spudfiles.com/forums/profile,mode,viewprofile,u,12312.html jor2daje]

			Variations of the position of the air inlet and the inclusion of vortex blocks typically aid with reliability and affect rate of fire, however muzzle velocity and energy is not affected.

	== Common Designs ==		== Common Designs ==

Jackssmirkingrevenge: /* Design Characteristics */

2010-12-13T13:03:13Z

Design Characteristics

← Older revision		Revision as of 08:03, 13 December 2010
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	Most of the characteristics that make a good pneumatic spudgun also apply to BBMGs. As with any pneumatic gun, the higher the reservoir pressure and the longer the barrel (up to a point) the greater the [[muzzle velocity]]. Because of the large amount of compressed gas that is wasted in a typical BBMG, the air supply needs to be fairly substantial. For air supplies with a resevoir such as compressors this can mean [[CB ratio]]s of 100:1 to 1000:1. Note that, for a BBMG, the "chamber volume" includes the volume of the compressor's reservoir.		Most of the characteristics that make a good pneumatic spudgun also apply to BBMGs. As with any pneumatic gun, the higher the reservoir pressure and the longer the barrel (up to a point) the greater the [[muzzle velocity]]. Because of the large amount of compressed gas that is wasted in a typical BBMG, the air supply needs to be fairly substantial. For air supplies with a resevoir such as compressors this can mean [[CB ratio]]s of 100:1 to 1000:1. Note that, for a BBMG, the "chamber volume" includes the volume of the compressor's reservoir.

	The BBs should fit the barrel well enough to minimize leakage of air around the ~~ammo~~ ([[blowby]]) but not so tightly that friction is excessive.		The BBs should fit the barrel well enough to minimize leakage of air around the projectile ([[blowby]]) but not so tightly that friction is excessive. Herewith the result of an experiment in order to quantify performance loss due to leakage around the projectile:

			The basic setup was two 15 inch lengths of barrel tubing, one was aluminium with an I/D of 5mm, while the other was a straighted piece of coiled copper tubing with an I/D of 4.5mm. The barrels were hooked up to a blowgun attached to a compressor and used to fire lead BBs - with a nominal diameter of 4.5mm - at 100 psi through a chronograph. Over a 5 shot string, the 5mm I/D barrel averaged 242 feet per second, whilst the 4.5mm I/D barrel averaged 279 feet per second. With an average projectile weight of 8 grains, this gives a muzzle energy of 1.04 and 1.38 ft/lbs respectively - a significant power increase of 33% over the wider barrel.

	The chambering and firing of BBs in a cloud BBMG appears to be a coupled process. Usually, when a BB is passing through the barrel the reduced air flow through the gun inhibits the loading of the next BB into the barrel. When the first BB leaves the barrel the increase in air flow "chambers" the next BB. As a result it appears that there is rarely more than one BB in the barrel at a time. This suggests that the muzzle velocity and ROF of cloud BBMGs are linked. The ROF for a gun would appear to be often very close to the reciprocal of the barrel transit time for a BB.		The chambering and firing of BBs in a cloud BBMG appears to be a coupled process. Usually, when a BB is passing through the barrel the reduced air flow through the gun inhibits the loading of the next BB into the barrel. When the first BB leaves the barrel the increase in air flow "chambers" the next BB. As a result it appears that there is rarely more than one BB in the barrel at a time. This suggests that the muzzle velocity and ROF of cloud BBMGs are linked. The ROF for a gun would appear to be often very close to the reciprocal of the barrel transit time for a BB.

Benstern: added link

2008-06-04T06:04:22Z

added link

← Older revision		Revision as of 01:04, 4 June 2008
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	* A [[Tee vortex BBMG]] housed inside of the bottom of a [[tee]], uses the air inlet to swirl the BBs around a circular or semi-circular cutout in a block placed in the BB [[chamber]] and out through a BB sized hole in its side leading to the barrel.		* A [[Tee vortex BBMG]] housed inside of the bottom of a [[tee]], uses the air inlet to swirl the BBs around a circular or semi-circular cutout in a block placed in the BB [[chamber]] and out through a BB sized hole in its side leading to the barrel.

	* An [[Inline Vortex BBMG]] uses the same vortex block from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.		* An [[Inline Vortex BBMG]] uses the same [[vortex block]] from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.

	* A [[Vortex cap BBMG]] works on an identical principle to a vortex block but instead of a cut-out in a block placed within a large BB chamber it uses the circular internals of a pipe endcap in which to swirl the BBs allowing for a smaller diameter chamber. This potentially allows for a smaller overall design. It was designed by Gatorlangman AKA DavidVaini.		* A [[Vortex cap BBMG]] works on an identical principle to a vortex block but instead of a cut-out in a block placed within a large BB chamber it uses the circular internals of a pipe endcap in which to swirl the BBs allowing for a smaller diameter chamber. This potentially allows for a smaller overall design. It was designed by Gatorlangman AKA DavidVaini.

Benstern: added and fixed links, added to bb machine gun category

2008-06-04T05:12:26Z

added and fixed links, added to bb machine gun category

← Older revision		Revision as of 00:12, 4 June 2008
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	* A [[Cloud BBMG]] agitates the BBs in the ammunition chamber by means of the air inlet blowing upwards through them. The agitated BBs then get sucked into the [[barrel]] with the outgoing air stream.		* A [[Cloud BBMG]] agitates the BBs in the ammunition chamber by means of the air inlet blowing upwards through them. The agitated BBs then get sucked into the [[barrel]] with the outgoing air stream.

	* A [[~~"T"~~ vortex BBMG]] housed inside of the bottom of a T, uses the air inlet to swirl the BBs around a circular or semi-circular cutout in a block placed in the BB chamber and out through a BB sized hole in its side leading to the barrel.		* A [[Tee vortex BBMG]] housed inside of the bottom of a [[tee]], uses the air inlet to swirl the BBs around a circular or semi-circular cutout in a block placed in the BB [[chamber]] and out through a BB sized hole in its side leading to the barrel.

	* An [[Inline Vortex BBMG]] uses the same vortex block from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.		* An [[Inline Vortex BBMG]] uses the same vortex block from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.
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	* The fit of the BBs in the barrel		* The fit of the BBs in the barrel

	Most of the characteristics that make a good pneumatic spudgun also apply to BBMGs. As with any pneumatic gun, the higher the reservoir pressure and the longer the barrel (up to a point) the greater the [[muzzle velocity]]. Because of the large amount of compressed gas that is wasted in a typical BBMG, the air supply needs to be fairly substantial. For air supplies with a resevoir such as compressors this can mean [[CB ratio]]s of 100:1 to 1000:1. Note that, for a BBMG, the "[[chamber]] volume" includes the volume of the compressor's reservoir.		Most of the characteristics that make a good pneumatic spudgun also apply to BBMGs. As with any pneumatic gun, the higher the reservoir pressure and the longer the barrel (up to a point) the greater the [[muzzle velocity]]. Because of the large amount of compressed gas that is wasted in a typical BBMG, the air supply needs to be fairly substantial. For air supplies with a resevoir such as compressors this can mean [[CB ratio]]s of 100:1 to 1000:1. Note that, for a BBMG, the "chamber volume" includes the volume of the compressor's reservoir.

	The BBs should fit the barrel well enough to minimize leakage of air around the ammo ([[blowby]]) but not so tightly that friction is excessive.		The BBs should fit the barrel well enough to minimize leakage of air around the ammo ([[blowby]]) but not so tightly that friction is excessive.
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	== Links ==		== Links ==
	[http://www.burntlatke.com/bb.html Latke's BBMG]: An excellent write-up on how to build a Vortex BBMG.		[http://www.burntlatke.com/bb.html Latke's BBMG]: An excellent write-up on how to build a Vortex BBMG.

			[[Category:BB machine gun]]

Davidvaini: /* Common Designs */

2008-06-03T02:53:40Z

Common Designs

← Older revision		Revision as of 21:53, 2 June 2008
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	== Common Designs ==		== Common Designs ==

	* A [[~~cloud~~ BBMG]] agitates the BBs in the ammunition chamber by means of the air inlet blowing upwards through them. The agitated BBs then get sucked into the [[barrel]] with the outgoing air stream.		* A [[Cloud BBMG]] agitates the BBs in the ammunition chamber by means of the air inlet blowing upwards through them. The agitated BBs then get sucked into the [[barrel]] with the outgoing air stream.

	* A [["T" vortex BBMG]] housed inside of the bottom of a T, uses the air inlet to swirl the BBs around a circular or semi-circular cutout in a block placed in the BB chamber and out through a BB sized hole in its side leading to the barrel.		* A [["T" vortex BBMG]] housed inside of the bottom of a T, uses the air inlet to swirl the BBs around a circular or semi-circular cutout in a block placed in the BB chamber and out through a BB sized hole in its side leading to the barrel.
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	* An [[Inline Vortex BBMG]] uses the same vortex block from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.		* An [[Inline Vortex BBMG]] uses the same vortex block from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.

	* A [[~~vortex~~ cap BBMG]] works on an identical principle to a vortex block but instead of a cut-out in a block placed within a large BB chamber it uses the circular internals of a pipe endcap in which to swirl the BBs allowing for a smaller diameter chamber. This potentially allows for a smaller overall design. It was designed by Gatorlangman AKA DavidVaini.		* A [[Vortex cap BBMG]] works on an identical principle to a vortex block but instead of a cut-out in a block placed within a large BB chamber it uses the circular internals of a pipe endcap in which to swirl the BBs allowing for a smaller diameter chamber. This potentially allows for a smaller overall design. It was designed by Gatorlangman AKA DavidVaini.

	== Design Characteristics ==		== Design Characteristics ==

Davidvaini: /* Common Designs */

2008-06-03T02:44:40Z

Common Designs

← Older revision		Revision as of 21:44, 2 June 2008
Line 5:		Line 5:
	* A [[cloud BBMG]] agitates the BBs in the ammunition chamber by means of the air inlet blowing upwards through them. The agitated BBs then get sucked into the [[barrel]] with the outgoing air stream.		* A [[cloud BBMG]] agitates the BBs in the ammunition chamber by means of the air inlet blowing upwards through them. The agitated BBs then get sucked into the [[barrel]] with the outgoing air stream.

	* A [["T" vortex BBMG]]housed inside of the bottom of a T, uses the air inlet to swirl the BBs around a circular or semi-circular cutout in a block placed in the BB chamber and out through a BB sized hole in its side leading to the barrel.		* A [["T" vortex BBMG]] housed inside of the bottom of a T, uses the air inlet to swirl the BBs around a circular or semi-circular cutout in a block placed in the BB chamber and out through a BB sized hole in its side leading to the barrel.

	* An [[Inline Vortex BBMG]] uses the same vortex block from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.		* An [[Inline Vortex BBMG]] uses the same vortex block from above however the block is housed inside a straight pipe. Normally Inline Vortex BBMG's have a spring/plunger system that forces the BB's into the vortex block to allow firing from any angle without agitation.