Yale Whoopie Slings
YALE Whoopie Sling
This old-fashioned choker adjusts to a wide range of diameters in just seconds. No other choker allows the user to adjust to the appropriate circumference so fast. With other choking devices (except for an eye sling), you end up with either too much eye or no eye at all, depending on the size of your mount. It’s ideal to have a short anchor point to remove “play” in an already dynamic system, reducing unnecessary shock to hardware and ropes. By wrapping your arms around the tree, you can pre-determine the length that the sling needs to be, then quickly adjust your Whoopie to that measurement. Simply lay the Whoopie Sling out flat on the ground, adjust it from end to end with your arm-measured diameter, connect the Port-A-Wrap and then fit around the tree. (If you wish to make your own slings refer to Yalex Single Braid rope in 16mm and 19mm diameter.)
| Product Code | Rope Diameter | Length | Vertical Ratings | Choker Ratings |
Basket Ratings |
| WHOOP1.8 | 3/4" - 19mm | 960mm - 1.8m | 2,075kg | 1,660kg | 4,150kg |
| WHOOP2.5 | 3/4" - 19mm | 960mm - 2.5m | 2,075kg | 1,660kg | 4,150kg |
| WHOOP3.6 | 3/4" - 19mm | 960mm - 3.6m | 2,075kg | 1,660kg | 4,150kg |
| WHOOP5.0 | 7/8" - 22mm | 960mm - 5m | 3,065kg | 2,450kg | 6130kg |
Angle Effect: Sling Capacities
The capacity of a multiple-leg sling is directly affected by the angle of the sling leg with the vertical. As this angle increases, the stress on each leg increases. The capacity can be readily determined by multiplying the sling’s vertical capacity by the appropriate load-angle factor.
| Sling Angle Vertical |
Load Angle Factor |
| 0° | 1.000 |
| 15° | 0.966 |
| 30° | 0.866 |
| 45° | 0.707 |
| 60° | 0.500 |
| 75° | 0.259 |