bill413, while many in this thread have devolved into a discussion about Nazi's which has nothing to do with the question I posed, I have been doing some reading on the original subject. I have to say that you have misinterpreted the data you are looking at. The low forces you have sited are a positive. It reflects the fact that the Purcell has excellent energy absorbtion. In the studies I have read, high forces seen by various lanyards is a sign of weakness in the device. As a static measurement it may be impressive, but it shows weakness in the the dynamic world of climbing. I would be fine to see this thread come to an end if contributors aren't interested in staying on subject.