With the exception of braided fishing line which clearly has no stretch...will a smaller LB rating/thinner fishing line have more stretch than a bigger LB rating/thicker fishing line when comparing the same line manufacturer and model?

 

I have heard that the thinner the fishing line is, the more its going to stretch compared to a thicker fishing line just from pure physics alone. From a purely physics stand point, it makes sense since the thicker/denser the material there is to pull, the more resistance there is going to be and therefore the less stretch you're going to feel/have. Therefore, a smaller/thinner line should feel a lot softer and have more stretch since there is less material to pull right?

Admittedly not a line stretch expert.

While completely disregarding if & how heavy or light line effects any given presentation

and if there is any 'cover' present, I'll submit the following. 

In my own fishing, when using FC or mono,

a couple of factors come into play when selecting line size and considering line stretch.

One is, how much line I expect to have out (casting distance) when I get strikes.

The more line that's out, the more the stretch will be, regardless of LB test.

(the less sensitivity as well).

Second for me is, how much hook setting 'power' do I need.

Because the 'stretch' can play a role here, it seems hook selection (type & size) matters as well.

In the end 'bigger' line offers 'more' of just about everything.

Some good, some not so much.

'Smaller' line conversely, provides 'less' of many of the same characteristics

But there are deals where one is better than the other.

Much of it is a trade off.

One thing's for sure, I need to get the bite first.

Fish Hard

A-Jay

 

 

Material yield is in PSI pounds square inch, larger diameter = higher PSI, so.....smaller diameter fishing line of the same material qwill always have lower yield strength. 

Line mfr’s often under rate their line strength by using larger diameter then competitors and anglers believe brand Y is stronger then X. 

The strongest monofilaments per diameter are often stiff and hard (high memory) not a good quality in fishing line.

Sunline Defier Armilo is a small strong good casting Nylon Mono, I use 25# / .016D for my swimbaits to 7 oz.

Tom

What what I have seen the lower test will stretch at lower pressures than higher test and that can give the sensation of more stretch when setting the hook.  I feel more stretch with 8 lbs big game than 20 lbs when setting the hook but both have the same stretch.  The 20 lbs just takes more force to get the stretch.

Yield strength for most of today’s mono, copolymer it FC is approx 30-35% of tensile ( labeled # test). So about 1/3rd the pound test the starts to stretch. A good reason to set your reel drag at 1/3rd the pound test.

What confuses anglers is line bow in the water caused by coefficient of drag cutting through water feels like stretch as the bow is tightened up.

Smaller diameter line has lower drag and FC being heavier then water has lower coefficient drag, less bow.

What you feel the line doing is what matters.

Tom