As part of the development of our new backup device - the Catch, we have recently performed some tests on weighted ropes, a situation not found within EN or ANSI standards, but common in many rope access rescue situations.
Using a lanyard of 90cm and with 1m of 11mm DMM Worksafe rope between the Catch and the belay (as stated by EN test conditions) we hung 80kg on the rope and dropped 50kg in a fall factor 2 situation. The Catch slipped only 7cm and generated a peak force of 5kN, thereby passing well within EN conditions. See a video of this test above.
We also performed further tests including the very severe test of hanging 100kg on the rope and dropping 100kg in a fall factor 2, which again passed EN conditions (slipping 182cm, peak force 3.3kN). See video of this test here: vimeo.com/57438155. We will be completing further testing as work on our device continues, and will include 10.5mm ropes in these tests.
We are continuing development work on the Catch, and are making great progress with our towable panic release mechanism, of which we shall provide more details as our research, testing and development allows.