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What makes Swarovski better???
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It's not just the glass it's also the mechanics.
This is an illustration of a reverse system (also known as an erector tube or inversion system) and where the 4 coil springs are located. This erector tube sits inside the rifle scopes main tube.
The Z6 and Z5 series Rifle Scopes feature the SWAROVSKI OPTIK patented 4-point coil spring system. These 4 coil springs replace the standard single leaf spring system that most major rifle scope manufacturers use today. The main function of a spring system as discussed here, is to hold the erector tube “Still or Rigid” inside the rifle scope for the purpose of holding the reticle in its “Zeroed” position after the scope/rifle combination has been sighted in.
Illustration of an erector system inside a Z6 2-12x50. The left side is the objective end. The Erector Tube extends from the ocular housing to just past the turret positions inside of the rifle scope main tube. The erector tube also holds the reticle. The turrets are in constant contact with the erector tube from the top and right side of the scope. Opposing the turret positioning, holding the erector tube in place is a spring system. The manner, and the ability for the reticle/erector tube to stay rigid inside of the main tube is thought of to most shooters as “Holding a Zero”.
To help you understand the significance and selling features of the 4 coil spring system it will help to review the traditional leaf spring system that has served us well for many years. In the picture below, on the left side is a 1 inch erector tube with the leaf spring. The right side is a 30 mm erector tube showing the 4 coil springs.
On a standard leaf spring system, the single spring is connected to the erector tube, at the turret area, exactly opposite the midway position between the elevation and windage turrets, pushing or holding the erector tube against the turrets. If you were looking through the scope as it sits on a rifle, with the elevation turret in the 12 o’clock position, the windage turret in the 3 o’clock position, the leaf spring would be in the 7 to 8 o’clock position. See illustration below. The red section is the leaf spring position inside the scope if you were viewing through the scope.
This is the leaf spring illustration from a side view (spring not in actual position to better illustrate)
In accordance with Swarovski's corporate philosophy “to constantly improve what is good”, SWAROVSKI OPTIK designed a better method of holding the erector tube in position via the patented 4-point coil spring system. These 4 springs are placed at the rear, or ocular end of the erector tube that abuts the ocular housing. If you were looking through the scope as it sits on a rifle, the 4 springs are at the (roughly) 6, 6:30, 8:30 and 9 o’clock positions, diagonally opposed to the 12 o’clock elevation and 3 o’clock windage turrets that are in contact with the front end of the erector tube. Below is an illustration of where the 4 coil springs are located on the erector tube and their position relationship to the turrets.
In essence, you have the 4 coil spring force from the lower left ocular area holding the erector tube firmly against the elevation and windage turrets.4 Coil springs are now doing the job of what 1 leaf spring did before.
The 4 coil spring system serves another purpose as well. The springs help absorb recoil forces to the rifle scope. This lowers shock to the scope’s internal working mechanism.
Not only do these 4 coil springs hold the erector tube in position for the best “Zero Holding Capability”, but the 4 springs act to absorb recoil stresses to the erector system as shown in this demonstration. The reduction of recoil stress adds to the overall strength and longevity of the scope.
In the SWAROVSKI OPTIK Rifle scope series, the Z6 and Z5 models have the 4 coil spring system. The Z3 series retains the traditional leaf spring system that allows the Z3’s to have a slightly lower price.
Edited by Chris Farris - September/26/2009 at 14:24
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