
Originally Posted by
backman
A friend of mine made a line tester out of old elevator parts and a 200# scale a few years back.
We had a grand time a couple snowy winter weekends experimenting w./ how things break.
Two things I remember clearly:
* First crimp failure at low % of line strength invariably was caused not by overcrimping, but by not crimping enough and the line sliding and breaking w/ in the crimp and leaving a small stub of line in the loop end of the crimp. A typical slip was at 40 or 50# on 150# line; ie at a pressure setting you could expect to see in an initial run off.
* the double barrel copper crimps did not perform as well at 100% line strength as did the single Jinkai or Momoi aluminum ones. That could have been the fault of our crimper/crimping or due to the aluminum ones making a better flare than the double barrelled copper ones. If I recall correctly the double barrelled ones failed at ~100% while the aluminum ones went up to 125% before failing; enough of a consistent difference that I switched over to pure aluminum.
FWIW ^2 - we also blew up a number of used Mustad 7691SS and 3407 hooks in the experiment. We looped the hook through and eye and applied pressure at the line end with the elevator mechanism and more than one hook either bent or shattered under 100#+ of pull.