Attention: This page had TOO much info; some information has been moved onto dedicated pages in the list below.
This page contains LENGTH SPECIFICATIONS for various knots and accessories. JRB reserves the right to ‘fine-tune’ these recommendations. See these dedicated pages for these items:
No matter what you are tying, it is best to:
- Buy and cut a little extra. We can always make a cord shorter; we can’t make it longer.
- The ‘tail ends” on knots should be LONG, not short.
Measurements
If you don’t have a measuring device handy, knowledge of a handful of body measurements (along with a little math) can allow us to make a decent length measurement.
Longhorn Hitch / Loop
The Longhorn Hitch / Longhorn Loop is used to create several devices, including the Longhorn Agile Hitch and Longhorn Zenith Hitch. The total amount of cord that is needed depends on the application, and is detailed in a later section. This table merely contains the MINIMUM length of the two parallel, working ends when creating a derivative friction hitch. Longer ends are recommended if creating a Longhorn soft shackle.
| Cord diameter | Min Working Ends |
|---|---|
| 5mm | 10″ or 25.4 cm |
| 6mm | 12″ or 30.5 cm |
| 7mm | 14″ or 35.5 cm |
| 8mm | 16″ or 40.6 cm |
Longhorn Zenith Hitch
The Longhorn Zenith Hitch prefers a cord to rope ratio about 60-65%. This table captures the size of the resulting ‘load loop’ produced with these recommended rope & cord combinations when tying the 3-2 variant. The most compact loop which can effectively be produced is approximately one inch, indicated by the (C) in the table below. When selecting a cord, ensure that it is appropriately strong, with an appropriate safety factor for the application, particularly in the smaller diameters. Refer to: Cord
| Rope & Cord Diameters | % | Cord Length | Working Ends for Longhorn | Resulting Loop Size (3-2 variant) |
|---|---|---|---|---|
| 8 mm 5 mm | 62% | 72″ 183 | 11″ 28 | 11″ 28 |
| 8 mm 5 mm | 62% | 60″ 152 | 11″ 28 | 5″ 12.7 |
| 8 mm 5 mm | 62% | 58″ 147 | 12″ 30.5 | 1″ (C) 2.5 |
| 9.5 mm 6 mm | 63% | 72″ 183 | 12″ 30.5 | 5.5″ 14 |
| 9.5 mm 6 mm | 63% | 65″ 165 | 13″ 33 | 1″ (C) 2.5 |
| 10 mm 6 mm | 60% | 72″ 183 | 12″ 30.5 | 5″ 12.7 |
| 10 mm 6 mm | 60% | 70″ 178 | 13″ 33 | 1″ (C) 2.5 |
| 11.1 mm 7 mm | 63% | 84″ 213 | 14″ 35.5 | 6″ 15 |
| 11.1 mm 7 mm | 63% | 80″ 203 | 15″ 38 | 1″ (C) 2.5 |
Longhorn Agile Hitch
For the details and length spec’s on the Longhorn Agile Hitch, see page:
JRB Ascender Hitch
For the details and length spec’s on the JRB Ascender, see page: