Strength Rating

[JohnScott]

... would vary with the kind of thread used and the configuration, i.e how many strands were used in the tip end of the leader and how the tip end was finished.

For example, if the tip end has six strands of thread, that means there are three looped strands at the very end of the tip. That is the least number of strands in the leader and the given weak point.** Any strength rating would be measured at that point.

How that leader is finished at the tip end would also be significant. If a tip ring is incorporated before the leader is furled, there is a maximum of three strands of thread through the ring. If a shorb loop is used to finish the tip end, the loop itself will have six strands, but the loop will be held closed by three strands, but those three strands only have to take half the stress put on the shorb loop ( half the stress goes to the strands closing the loop and half the stress goes to the length of the leader towards the butt ).

However, it is my experience, and it does seem to be confirmed by some science, that the furling process makes the combined strength of the furled strands stronger than the combined strength of the same number of strands of the same material not furled.

So much for rocket science.

I use Danville 210 Flymaster Plus thread ( roughly equivalent to 3/0 thread ). The tip end of the leader has six strands, with three strands looped at the very tip end of the leader. A tip ring is incorporated before the furling starts so the finished leader has three twisted strands passing through the tip ring. That set up is strong enough to break off 2X 10# test tippet with no damage to the tip ring nor the leader.

John

** Unless it is a weight forward configuration.