I Use To Think That The Higher The IM Rating The Better The Rod.
May 12, 2020 13:33:03 #
Ron620DVS
Loc: Guntersville Alabama
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I Use To Think That The Higher The IM Rating The Better The Rod.🎣🎣🎣🎣🎣
SO,What have I learned? I use to think that the higher the IM rating the better the rod. I now know that that is not true. Well, in some cases you are, and in some cases you aren't. The fact is though that the difference between IM6 and IM7 is nothing in terms of modulus, and compared to IM8 it's only slightly higher.
Wow...look at that; IM9 actually has a lower modulus than IM8...go figure now. Many companies are using fibers with a much higher modulus, like 57 and even higher, however these fibers don't necessarily use the IM ratings. So, whenever you see a fiber with an IM rating...BUYER BEWARE! THE HIGHER THE IM RATING, DOES NOT NECESSARILY MEAN THE HIGHER THE MODULUS!!!
This is from Andy Deer who is in the blank distribution business;
The point is this folk, just because you have a blank made from a high modulus fiber, doesn't means it's a good rod! And vice versa, just because you have a blank with a low modulus even the original fiber blanks were made with (33 million) doesn't mean it's a bad or outdated rod. It's all about what the designer does with it.
I know there are some of you that may already know this, but judging from the amount of calls I get on a daily basis from folks who ONLY want IM7 or IM8, but can't really tell you why, I have to believe they don't really know what they are talking about at all. They've just been sucked into the "Marketing Machine" that leads people to believe that the higher the IM rating, the lighter and more sensitive the material, which is not always the case.
Be forewarned that there is A LOT more to graphite blank construction, performance, quality, sensitivity, weight etc... than just what modulus the fiber is. There are lots of other variables like flag patterns, and wall thickness, and resin systems, and mandrel design....It's all about the talent of the designer, and what he is able to do in terms of the sum of those variables...not just the posted modulus!
Simply put, graphite is a carbon fiber material containing micro graphite crystals. When these are combined with certain resins and textile materials, they produce the graphite filaments that are used in rod blank production.
What Is Modulus/IM and Ton Rating?
Modulus is the term referring to the elasticity of the graphite. It is the relationship between stress (the applied force per square inch) and strain (the amount of deformation that the force causes per square inch).
You can think of modulus as stiffness. The IM and/or Ton rating refers to the overall modulus of the material.
Rating Chart;
IM-6 Graphite = 30+ Ton Material (Standard Modulus)
IM-7 Graphite = 35+ Ton Material (Intermediate Modulus)
IM-8 Graphite = 40+ Ton Material (Intermediate/High Modulus)
IM-10 Graphite = 54+ Ton Material (High Modulus)
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All rods are made on a stainless steel mandrel that has been machined to the exact taper that a rod engineer wants. the cloth, (scrim) is rolled onto the mandrel and then tightly wound spirally with cellophane tape. it is then baked in an oven for several hours to melt the resins that bond the cloth. it is taken out and the cellophane is removed. then the rod is put on a sander to take the ribs from the cellophane out.
With that being said, if you make a rod with the 4 different graphite cloths on the same mandrel the lowest modulus 96 percent graphite will bend 2 times as far as the highest modulus before failure.
Does that make sense?
🎣🎣🎣🎣🎣
.
I Use To Think That The Higher The IM Rating The Better The Rod.🎣🎣🎣🎣🎣
SO,What have I learned? I use to think that the higher the IM rating the better the rod. I now know that that is not true. Well, in some cases you are, and in some cases you aren't. The fact is though that the difference between IM6 and IM7 is nothing in terms of modulus, and compared to IM8 it's only slightly higher.
Wow...look at that; IM9 actually has a lower modulus than IM8...go figure now. Many companies are using fibers with a much higher modulus, like 57 and even higher, however these fibers don't necessarily use the IM ratings. So, whenever you see a fiber with an IM rating...BUYER BEWARE! THE HIGHER THE IM RATING, DOES NOT NECESSARILY MEAN THE HIGHER THE MODULUS!!!
This is from Andy Deer who is in the blank distribution business;
The point is this folk, just because you have a blank made from a high modulus fiber, doesn't means it's a good rod! And vice versa, just because you have a blank with a low modulus even the original fiber blanks were made with (33 million) doesn't mean it's a bad or outdated rod. It's all about what the designer does with it.
I know there are some of you that may already know this, but judging from the amount of calls I get on a daily basis from folks who ONLY want IM7 or IM8, but can't really tell you why, I have to believe they don't really know what they are talking about at all. They've just been sucked into the "Marketing Machine" that leads people to believe that the higher the IM rating, the lighter and more sensitive the material, which is not always the case.
Be forewarned that there is A LOT more to graphite blank construction, performance, quality, sensitivity, weight etc... than just what modulus the fiber is. There are lots of other variables like flag patterns, and wall thickness, and resin systems, and mandrel design....It's all about the talent of the designer, and what he is able to do in terms of the sum of those variables...not just the posted modulus!
Simply put, graphite is a carbon fiber material containing micro graphite crystals. When these are combined with certain resins and textile materials, they produce the graphite filaments that are used in rod blank production.
What Is Modulus/IM and Ton Rating?
Modulus is the term referring to the elasticity of the graphite. It is the relationship between stress (the applied force per square inch) and strain (the amount of deformation that the force causes per square inch).
You can think of modulus as stiffness. The IM and/or Ton rating refers to the overall modulus of the material.
Rating Chart;
IM-6 Graphite = 30+ Ton Material (Standard Modulus)
IM-7 Graphite = 35+ Ton Material (Intermediate Modulus)
IM-8 Graphite = 40+ Ton Material (Intermediate/High Modulus)
IM-10 Graphite = 54+ Ton Material (High Modulus)
🎣🎣🎣🎣🎣
All rods are made on a stainless steel mandrel that has been machined to the exact taper that a rod engineer wants. the cloth, (scrim) is rolled onto the mandrel and then tightly wound spirally with cellophane tape. it is then baked in an oven for several hours to melt the resins that bond the cloth. it is taken out and the cellophane is removed. then the rod is put on a sander to take the ribs from the cellophane out.
With that being said, if you make a rod with the 4 different graphite cloths on the same mandrel the lowest modulus 96 percent graphite will bend 2 times as far as the highest modulus before failure.
Does that make sense?
🎣🎣🎣🎣🎣
.
May 13, 2020 06:36:28 #
Joecat
Loc: Florida / Rhode Island
Very interesting thanks, I purchase rods on how they feel and perform for the fish I’m targeting hardly ever look at the Im rating I’ve been hooked on star rods inexpensive and a nice touch from 5’6’’ stand up to casting rod, a good rod for the $ just my opinion
May 13, 2020 06:43:44 #
May 13, 2020 07:12:59 #
May 13, 2020 19:15:47 #
Joecat wrote:
To each his own a little more reason why Would be helpful
Is anyone familiar with Dobyns rods?
May 13, 2020 20:20:50 #
saw1 wrote:
Is anyone familiar with Dobyns rods?
I've seen some of the millennials, you know the ones with no locations, talking about them. They all liked them. No personal experience thought.
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