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Negative Blocking Rigging Kits

These kits utilize a loopie sling to install a block anywhere you need it in the tree. Running the supplied rigging rope through the block minimizes abrasion and wear and tear on your rope, and grants increased control of the load. Rate of descent is controlled through use of the Port-a-Wrap attached to the base of the tree with the Tenex sling. Everything you need in one kit, with built-in savings and a rope bag large enough for your rigging line, slings, and blocks.

Kits contain rigging rope and block, with sling for attaching block in the tree, and Port-a-Wrap or other friction device with sling for attaching at base of tree and managing the descent of the load.

Nystron Rigging Kit #1

Nystron Rigging Kit #1 New in 2018!

kit91

This Nystron Negative Block Rigging Kit puts the added energy-absorption in Nystron rope to use to help mitigate some of the force generated. Nystron is a double-braid rigging line with nylon core fibers, which makes it stronger and more elastic than all-polyester rigging lines. This kit is excellent for large removals and rigging heavy wood. The extra energy-absorption from Nystron is good for those lower trunk sections where room to let the rope run becomes limited.

Kit contains: 200' Nystron 1/2” (NS12), Stein RC-2000 Lowering Device (RIG118), 3/4” x 25' Tenex Tec Sling (SLI221), ISC Small 5/8" Spring Block (PUL213), 3/4” x 18' Tenex Tec Sling (SLI210), XL WesSpur Rope Bag (BAG111).

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Nystron Rigging Kit #2

Nystron Rigging Kit #2 New in 2018!

kit92

This Nystron Negative Block Rigging Kit uses a larger-diameter rope and the Stein RCW-3001 for a rigging kit built for serious jobs. The added energy-absorption in Nystron rope helps mitigate some of the force generated in negative-blocking. Nystron is a double-braid rigging line with nylon core fibers, which makes it stronger and more elastic than all-polyester rigging lines. This kit is excellent for large removals and rigging heavy wood. The extra energy-absorption from Nystron is good for those lower trunk sections where room to let the rope run becomes limited.

Kit contains: 250' Nystron 5/8” (NS58), Stein RC-3001 Lowering Device (RIG119), ISC Large 3/4" Spring Block (PUL304), 1” x 20' Tenex Tec Sling (SLI214), XL WesSpur Rope Bag (BAG111).

Note: we recommend a heavy-duty plastic tote or similar case for transport of the RC-3001 unit. A textile bag will likely not stand up to it's weight and hard edges/protrusions.

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False Crotch Rigging Kit

Negative Blocking (False Crotch) Rigging Kit

kit08

System MBS: 10,000 lb • 10:1 WLL 1,000 lb

Kit contains: 150' Stable Braid 1/2" (SB1215), Small Nickle-plated Port-a-Wrap III (RIG113), 1/2" x 15' Tenex Sling (SLI203), 5/8" Loopie Sling (SLI403), CMI 3/4" Steel Block (PUL306), Large Rope Bag (103).

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False Crotch Rigging Kit

Negative Blocking (False Crotch) Rigging Kit #2

kit09

This false crotch rigging kit provides a higher breaking strength and Working Load Limit (WLL) and contains all the necessary elements of a false crotch rigging system used to lower branches and logs.

System MBS: 15,000 lb • 10:1 WLL 1,500 lb

Kit contains: 150' Stable Braid 5/8" (SB5815), Large Nickle-plated Port-a-Wrap III (RIG114), 5/8" x 18' Tenex Sling (SLI207), 3/4" Loopie Sling (SLI404), CMI 3/4" Stainless Steel Block (PUL302), Large Rope Bag (103).

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False Crotch Kit #3

Negative Blocking (False Crotch) Kit #3

kit64

This kit is designed to tackle some of the very tall trees we have in the Pacific Northwest. Longer bull rope & slings for larger take-downs.

System MBS: 15,000 lb • 10:1 WLL 1,500 lb

Kit contains: 250' Stable Braid 5/8" (SB58), Large Nickle-plated Port-a-Wrap III (RIG114), 3/4" x 25' Tenex Sling (SLI221), 3/4" Loopie Sling (SLI404), CMI 3/4" Stainless Steel Block (PUL302), XL Rope Bag (BAG104).

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Atlas Rigging Kit

Atlas Rigging Kit

KIT61

This kit is based around the new Atlas rigging line from Sterling Rope. The Nylon core in Atlas gives good energy-absorption and runs smoothly in the large Port-a-Wrap. Multi-braid slings are provided to rig the Port-a-Wrap and ISC block, and 220' of line is ample for rigging trees up to 90'. An excellent go-to rigging kit to have on the truck.

Kit Contains: 220' Atlas 9/16" (AT9122), Large Nickle-plated Port-a-Wrap III (RIG114), 3/4" x 20' Multi-Braid Sling (SLI224), 5/8" x 2-6' Loopie Sling (SLI403), ISC 5/8" Aluminum Spring Block (PUL217), WesSpur XL Rope Bag (BAG104).

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Big Rig Kit

Big Rig Kit

KIT39

Our biggest negative blocking/false crotch kit to date is based around the new XL Port-a-Wrap. The 3.5” bollard on the XL porty provides a good bend-radius for the 3/4” rigging line. The base sling is long enough to hang on stems up to 6' round, and the large ISC spring block will allow you to get large-diameter trunk sections down in an expedient fashion.

Kit contains: 200' Stable Braid 3/4" (SB3420), XL Nickle-plated Port-a-Wrap III (RIG142), 1" x 25' Double-braid Sling (SLI121), 3/4" Loopie Sling (SLI404), ISC Large 3/4" Aluminum Spring Block (PUL304), XL Rope Bag (BAG104)

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