since the Imago IPT rod review i’ve had quite a few messages asking about the CCS System, what it is, how it works and when and why and where and who knows what else !… simple and effective, many individuals around the world have been contributing to several rod data bases. it may or may not be the end-all solution and others will surely pop up in the future but in the meantime it’s a whole heck of a lot better than just subjective guessing or wishful thinking.
don’t be afraid, it’s not just for tackle geeks and doesn’t get too techy, read on !
“I’m going to guess that when you purchased your last fishing rod you specified the length you wanted in actual feet and inches, rather than just asking your dealer for a rod of medium length. After all, what you call medium length and what someone else considers medium length may be two different lengths entirely. And yet, other than length and perhaps physical weight, all other intrinsic properties of a fishing rod are rated or listed by purely subjective means. Why?
This was the question that Dr. William Hanneman asked himself some years ago as he pondered why no two 5-weight rods possessed the same amount of power. After all, just what makes a 5-weight rod a 5-weight rod? At what point does a 5-weight rod become a 6-weight rod? Contrary to popular belief, there is no standard nor system to quantify or measure rod power by objective means – that number you see on the side of your rod is a purely subjective rating.”
“In the last issue, my Common Cents Approach to characterizing fly rods was introduced, along with the concept of the Defined Bending Index (DBI). This is expressed in the form of DBI=ERN/AA. Note: This is not a mathematical equation, but rather a shorthand notation where ERN (Effective Rod Number) describes the intrinsic power of the rod, and AA (Action Angle) describes the action of the rod.
The ERN is determined from the number of common one cent pieces required to deflect a horizontally fixed rod downward a distance equal to one third of its length. The AA is a measure of the angle the tip top forms when the rod is so deflected. These two values provide unique coordinates for that rod on a chart plotting the DBI as ERN vs AA. This is extremely useful for comparing completed rods, i.e., the final destination of the rod maker’s odyssey.”
for lotsa more information click the CCS banner.
and here’s one of several CCS rod databases.