Checklists
Materials Checklist
The following list is for a typical setup of a Pivot Post installation.
Quantities are not listed since they will vary based on the number of towers on the center pivot system.
- Pivotal Posts with cotter keys
- Basebeam wire diverters with "U" bolts
- Steel posts (cut in half for anchors)
- Wooden 5 inch (or bigger) by 8 foot posts
- Conventional posts (full length, "T" style or wood)
- Plastic slide-through insulators
- High tensile wire for permanent installations or 14 gauge smooth wire
- Spring and ratchet assembly
- Number 9 wire
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Tools Needed
- Post hole diggers
- Sledge hammer
- Fencing pliers
- Adjustable wrench to tighten ratchet
- "T" post driver
- 1/2 inch wrench for "U" bolts
- 25 ft. tape measure
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Diagrams
The Pivotal Fencing System is easy to install.
For most pivots at the center drive gearbox, use the four supplied "U" bolts to install the Pivotal Fencing System's wire diverter.
Then simply set a corner post outside the circle and a corner post at the pivot.
Unroll the smooth fence wire between the corner posts.
Secure the wire to the posts with the Pivotal Fencing System's spring and wire tightening ratchet assembly.
Install a Pivot Post approximately five feet from each wheel track, attach the wire to the Pivot Post at the desired height.
Install a conventional post with an insulator halfway bewteen each Pivot Post.
Attach the wire to the insulator on the conventional post.
Ready for use!
Typical Fence Installation Diagram
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Wire Diverter Installation Diagram
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Hints and Guidelines
- Fence should be offset about 15 feet from the center of the pivot so that all towers do not cross wires simultaneously. This reduces stress on wire and springs.
- Set Pivot Post about five feet from the wheel track on the wheel side of the tower.
- Use one half of a standard steel post to anchor the Pivot Post.
- There must be a support post (wooden, "T", fiberglass) installed between each tower. In rough terrain, additional support
posts may be installed but the support posts must be a minimum of 30 feet from the Pivot Post. It is very important that the wires slide in the insulators!
- To attach wires to Pivot Posts, install the cotter key through the pre-drilled holes. Do not use wire or "T" post insulators to secure the wire since they may keep the wire from sliding.
- Wire must be in good condition. High tensile (12.5#) strongly recommended. Do not use barbed wire.
- Two smooth fence wires are recommended to ensure that the sprinkler tire catches the wire. In event of very deep wheel tracks, a fence wire should be secured with a cotter key in one of the lower pre-drilled holes to ensure that the sprinkler tire catches the wire.
- Install wire diverters on basebeams using supplied brackets and "U" bolts. Make sure that the wire will not hang up across the entire tower.
- Any wire splices should be at least five feet from any post or tire. Splices may hang up on the tire or the post and break the wire.
- Sprinkler tires must be in good condition. Wire will snag on loose tread.
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Typical Paddock Setups
Here are the three most typical paddock setups and how the Pivot Post is incorporated into each setup.
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