Jerry Brown Hollow 16X [Test]

[MexicanGulf]

A famous Australian laboratory has tested Jerry Brown 

[MexicanGulf]

the final conclusions.   

[jurelometer]

We covered this before:

https://alantani.com/index.php?topic=38268.0

I don't think that some guy that posts stuff online with some homemade equipment and some apparent misunderstandings about the science should be described as a "famous laboratory".

Braided line is not solid or round, and therefore has no diameter.  The proper sizing measurement of line made up of woven, spun, or braided fibers is by weight of material per unit of length-  in other words how much UHMWPE plastic is there in a given length of line.  The industry standard is the denier, but Japanese braided fishing line manufacturers use different units and call their rating PE.  We have a thread here somewhere that breaks this all down.

At this point it is pretty clear that whoever is posting these videos, however well meaning, hard working or enthusiastic they might be, is not displaying basic subject matter knowledge.

Building some test equipment and publishing graphs and photos adds to the appearance of credibility, but it doesn't help if the basic premise is flawed.

What could be done rand is not difficult to do, is finding the true PE with a greater level of precision than what manufacturers use. This is especially useful for lines that only list a strength and no PE.  Both "diameter" and strength labeling for braid are marketing driven and not based on any exact formula. If one manufacturer's 80 lb line is very close to the same true PE (down to a couple  decimal points) of another manufacturer's 65 lb line - they should actually be considered as the same size for comparison purposes.

All this guy would need is a tape measure and a scale.

The abrasion test is also suspect, but for different reasons.  This test appears to be mostly stretching and cutting, as opposed to abrading.

There are actual international standards for measuring abrasion resistance on cordage, so this is a good place to start.  I don't know anything about these standards other than knowing that they exist, and seem to focus at least in part on testing the individual base fibers.

If you care, you could probably contact the guy to find out about his homemade strain tester to help you investigate how credible his breaking strength numbers are vs. using professional equipment.  Since the rest of his work is kinda janky, I have no interest.

What would also be very useful but much more work would be measuring for uniformity over a very large distance.  These numbers are published by line product manufacturers in different industries, and the better braided fishing line manufacturers probably track this for quality control purposes  - but this is not shared with the consumer.  What we get instead are these fake braid "diameters" and "pound test" ratings.  IMHO, attempting an independent measurement of these label properties for accuracy is a fool's errand.

If you want to know if one braid is better than another, try a scale with 10 meters of line.  Weigh it, then break it.  I believe  that you will have a better comparison than by using the "famous laboratory " website.


Just my opinion,

-J

[Swami805]

At least in the beginning he says it's for entertainment purposes only

[MexicanGulf]

We covered this before:

https://alantani.com/index.php?topic=38268.0

I don't think that some guy that posts stuff online with some homemade equipment and some apparent misunderstandings about the science should be described as a "famous laboratory".

Braided line is not solid or round, and therefore has no diameter.  The proper sizing measurement of line made up of woven, spun, or braided fibers is by weight of material per unit of length-  in other words how much UHMWPE plastic is there in a given length of line.  The industry standard is the denier, but Japanese braided fishing line manufacturers use different units and call their rating PE.  We have a thread here somewhere that breaks this all down.

At this point it is pretty clear that whoever is posting these videos, however well meaning, hard working or enthusiastic they might be, is not displaying basic subject matter knowledge.

Building some test equipment and publishing graphs and photos adds to the appearance of credibility, but it doesn't help if the basic premise is flawed.

What could be done rand is not difficult to do, is finding the true PE with a greater level of precision than what manufacturers use. This is especially useful for lines that only list a strength and no PE.  Both "diameter" and strength labeling for braid are marketing driven and not based on any exact formula. If one manufacturer's 80 lb line is very close to the same true PE (down to a couple  decimal points) of another manufacturer's 65 lb line - they should actually be considered as the same size for comparison purposes.

All this guy would need is a tape measure and a scale.

The abrasion test is also suspect, but for different reasons.  This test appears to be mostly stretching and cutting, as opposed to abrading.

There are actual international standards for measuring abrasion resistance on cordage, so this is a good place to start.  I don't know anything about these standards other than knowing that they exist, and seem to focus at least in part on testing the individual base fibers.

If you care, you could probably contact the guy to find out about his homemade strain tester to help you investigate how credible his breaking strength numbers are vs. using professional equipment.  Since the rest of his work is kinda janky, I have no interest.

What would also be very useful but much more work would be measuring for uniformity over a very large distance.  These numbers are published by line product manufacturers in different industries, and the better braided fishing line manufacturers probably track this for quality control purposes  - but this is not shared with the consumer.  What we get instead are these fake braid "diameters" and "pound test" ratings.  IMHO, attempting an independent measurement of these label properties for accuracy is a fool's errand.

If you want to know if one braid is better than another, try a scale with 10 meters of line.  Weigh it, then break it.  I believe  that you will have a better comparison than by using the "famous laboratory " website.


Just my opinion,

-J

Your considerations are always interesting and well-elaborated and it is always a pleasure to read you. Thank you

[jurelometer]

Your considerations are always interesting and well-elaborated and it is always a pleasure to read you. Thank you

Thank you for the kind words.  I have learned plenty from the rest of the members here, and try to chip in where I can.
 

-J