Rifled barrel - Revision history

Benstern: added links

2008-06-01T13:40:37Z

added links

← Older revision		Revision as of 08:40, 1 June 2008
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	In order to more accurately send a vegetable projectile towards the desired target, ~~barrels~~ for produce accelerators can be "rifled" which produces spiral grooves on the inside surface of the barrel.		In order to more accurately send a vegetable projectile towards the desired target, [[barrel]]s for produce accelerators can be "rifled" which produces spiral grooves on the inside surface of the barrel.

	These grooves impart rotation to the projectile as it accelerates down the barrel, gyroscopically stabilizing it and preventing the projectile from tumbling end-over-end. This spinning motion has been demonstrated to have positive effects accuracy of ~~potatoes~~, as seen in [http://www.burntlatke.com/rifle.html this] test done by Burnt Latke.		These grooves impart rotation to the projectile as it accelerates down the barrel, gyroscopically stabilizing it and preventing the projectile from tumbling end-over-end. This spinning motion has been demonstrated to have positive effects accuracy of [[potato]]es, as seen in [http://www.burntlatke.com/rifle.html this] test done by Burnt Latke.

	The rate of twist required can be approximated through a version of the Greenhill equation that has been modified to take into account the density of the projectile, though one must remember that the Greenhill equation was developed to deal with supersonic, pointed, and very dense projectiles:		The rate of twist required can be approximated through a version of the Greenhill equation that has been modified to take into account the density of the projectile, though one must remember that the Greenhill equation was developed to deal with supersonic, pointed, and very dense projectiles:
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	where:		where:
	*Twist = number of inches per rotation		*Twist = number of inches per rotation
	*C = 150 (use 180 for muzzle velocities higher than 2,800 f/s)		*C = 150 (use 180 for [[muzzle velocity\|muzzle velocities]] higher than 2,800 f/s)
	*D = bullet's diameter in inches		*D = bullet's diameter in inches
	*L = bullet's length in inches		*L = bullet's length in inches

BC Pneumatics at 08:07, 31 May 2008

2008-05-31T08:07:39Z

← Older revision		Revision as of 03:07, 31 May 2008
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	In order to more accurately send a vegetable projectile towards the desired target, barrels for produce accelerators can be "rifled" which produces spiral grooves on the inside surface of the barrel.		In order to more accurately send a vegetable projectile towards the desired target, barrels for produce accelerators can be "rifled" which produces spiral grooves on the inside surface of the barrel.

	These grooves impart rotation to the projectile as it accelerates down the barrel, gyroscopically stabilizing it and preventing the projectile from tumbling end-over-end. This spinning motion has been demonstrated to have positive effects accuracy of potatoes, as seen in [http://www.burntlatke.com/rifle.html this] test done by ~~the [[burnt latke]] group~~.		These grooves impart rotation to the projectile as it accelerates down the barrel, gyroscopically stabilizing it and preventing the projectile from tumbling end-over-end. This spinning motion has been demonstrated to have positive effects accuracy of potatoes, as seen in [http://www.burntlatke.com/rifle.html this] test done by Burnt Latke.

	The rate of twist required can be approximated through a version of the Greenhill equation that has been modified to take into account the density of the projectile, though one must remember that the Greenhill equation was developed to deal with supersonic, pointed, and very dense projectiles:		The rate of twist required can be approximated through a version of the Greenhill equation that has been modified to take into account the density of the projectile, though one must remember that the Greenhill equation was developed to deal with supersonic, pointed, and very dense projectiles:
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	Rates of twist higher than this should not hurt accuracy much, unless they break off the bits of potato that are engaging the rifling and thusly transmit no rotation at all.		Rates of twist higher than this should not hurt accuracy much, unless they break off the bits of potato that are engaging the rifling and thusly transmit no rotation at all.

	Rifled barrels ~~are~~ available from ~~the~~ [[SGTC]].		Rifled barrels were formally available from [[SGTC]] prior to it's closing.

	See also [[spudgun accuracy]]		See also [[spudgun accuracy]]

Boilingleadbath: + greenhil

2007-07-26T18:29:32Z

+ greenhil

← Older revision		Revision as of 13:29, 26 July 2007
Line 1:		Line 1:
	In order to more accurately send a vegetable projectile towards the desired target, barrels for produce accelerators can be "rifled" which produces spiral grooves on the inside surface of the barrel.		In order to more accurately send a vegetable projectile towards the desired target, barrels for produce accelerators can be "rifled" which produces spiral grooves on the inside surface of the barrel.

	~~When~~ the ~~produce rapidly~~ accelerates ~~past these grooves~~ it ~~twists thereby creating a gyroscopic effect which prevents~~ the projectile from tumbling end-over-end. This spinning motion has positive effects ~~on the projectile's~~ accuracy, as seen [http://www.burntlatke.com/rifle.html ~~here~~].		These grooves impart rotation to the projectile as it accelerates down the barrel, gyroscopically stabilizing it and preventing the projectile from tumbling end-over-end. This spinning motion has been demonstrated to have positive effects accuracy of potatoes, as seen in [http://www.burntlatke.com/rifle.html this] test done by the [[burnt latke]] group.

	~~Rifled barrels~~ can be ~~purchased at~~ the ~~[http~~://~~www~~.~~spudtech.com~~/~~components~~.~~asp Spudgun Technology Center~~].		The rate of twist required can be approximated through a version of the Greenhill equation that has been modified to take into account the density of the projectile, though one must remember that the Greenhill equation was developed to deal with supersonic, pointed, and very dense projectiles:
			Twist = (CD<sup>2</sup>)/L sqrt(SG/10.9)

			where:
			*Twist = number of inches per rotation
			*C = 150 (use 180 for muzzle velocities higher than 2,800 f/s)
			*D = bullet's diameter in inches
			*L = bullet's length in inches
			*SG = bullet's specific gravity

			Rates of twist higher than this should not hurt accuracy much, unless they break off the bits of potato that are engaging the rifling and thusly transmit no rotation at all.

			Rifled barrels are available from the [[SGTC]].

			See also [[spudgun accuracy]]


	[[Category:Components]]		[[Category:Components]]

Benstern at 03:34, 21 December 2005

2005-12-21T03:34:04Z

← Older revision		Revision as of 22:34, 20 December 2005
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	Rifled barrels can be purchased at the [http://www.spudtech.com/components.asp Spudgun Technology Center].		Rifled barrels can be purchased at the [http://www.spudtech.com/components.asp Spudgun Technology Center].


			[[Category:Components]]

Boilingleadbath: +burntlatke link

2005-12-03T23:03:26Z

+burntlatke link

← Older revision		Revision as of 18:03, 3 December 2005
Line 1:		Line 1:
	In order to more accurately send a vegetable projectile towards the desired target, barrels for produce accelerators can be "rifled" which produces spiral grooves on the inside surface of the barrel.		In order to more accurately send a vegetable projectile towards the desired target, barrels for produce accelerators can be "rifled" which produces spiral grooves on the inside surface of the barrel.

	When the produce rapidly accelerates past these grooves it twists thereby creating a gyroscopic effect which prevents the projectile from tumbling end-over-end. This spinning motion has positive effects on the projectile's accuracy ~~and distance~~.		When the produce rapidly accelerates past these grooves it twists thereby creating a gyroscopic effect which prevents the projectile from tumbling end-over-end. This spinning motion has positive effects on the projectile's accuracy, as seen [http://www.burntlatke.com/rifle.html here].

	Rifled barrels ~~are available~~ at [http://www.spudtech.com Spudgun Technology Center]		Rifled barrels can be purchased at the [http://www.spudtech.com/components.asp Spudgun Technology Center].

68.235.179.129: Rifled Barrels for Produce Accellerators

2005-12-03T17:45:42Z

Rifled Barrels for Produce Accellerators

New page

In order to more accurately send a vegetable projectile towards the desired target, barrels for produce accelerators can be "rifled" which produces spiral grooves on the inside surface of the barrel.

When the produce rapidly accelerates past these grooves it twists thereby creating a gyroscopic effect which prevents the projectile from tumbling end-over-end. This spinning motion has positive effects on the projectile's accuracy and distance.

Rifled barrels are available at [http://www.spudtech.com Spudgun Technology Center]