I'D efficiency at the head of the system.
Unlike a progress capture pulley, an I'D at the head of the system allows immediate lowering of the load if there is a problem, without system modification. But its efficiency is lower than that of a pulley.
- Read the technical notice before viewing the following techniques.
- It is important to fully understand the information provided in the technical notice before using this complementary information
- Mastering these techniques requires training.
- Consult a professional before attempting to perform these techniques on your own.
Efficiency comparison tests
The force required to raise a 100 kg mass was tested under several configurations with different devices at the head of the system: I’D S, Am’D carabiner and PRO TRAXION.
The results are given for information only, as they depend on numerous variables that are difficult to reproduce in each test.