QUOTE(CycleGuy @ May 4 2005, 09:45 AM)
Hello Again,
With all the different choices of lines these days and all the different tapers and plays on weight, purchasing a fly line can be rather confusing. I would not like to see the rating system that everyone is familiar with totally abandoned, but instead some adaptation or supplimentation could be useful to consumers.
As casts-by-fly points out, all of these can be and are described as 5wts - Rio Nymph, Ultra DT or WF, Wulff TT, Rio Grand - however if you start looking at 10' increments they are all very different, and only come together into a generic grouping at 30'.
Can you say "antiquated"?
CG
Cycle guy,
Antiquated isn't quite the word I had in mind. it is still a decent system if the line manufacturers would follow it or at least explain how a particular line deviates from it. The Rio grand and GPX are on the heavier side of the spectrum for a given line weight. At least say that in your marketing on the package. Instead of saying 'will turn over lots of shot' say 'is heavier than the line wt standard by x grains at y feet". Then at least the user would have a better idea.
Even better still would be going with the common cents system. For anyone not familiar, here's how it works. Rods are rated by hanging pennies from the tip of a rod that is securely mounted in a level position. You deflect the tip downwards until the deflection equals 1/3 the length of the rod (i.e. 9' rod means the tip goes down 36"). You coun how many pennies it took to hit that deflection and compare to the chart of pennies vs ERN (effective rod number). The effective rod number is a rating system that keeps every rod standard. The rods would be rated almost the same as they currently are with an ERN of 5.5 approximately equal to a 'perfect' 5 wt. I say approximately because there is no such thing as a perfect 5 wt. An ERN of 5.5 is just that- an ERN of 5.5.
From there you can also rate lines the same way. The common cents system has a simple fly line analyzer that gives the ELN (effective line number). Also you can convert to grain weight. Using the convention ELN = ERN you can find a line that is a match for that rod.
There are variables to consider. The convention ELN = ERN is based on the average caster and at 30'. If you are a really good caster, build up a lot of line speed, and are throwing longer distances you might line to say ELN = ERN - 1.0, that is put a 5 wt line on a 6 wt rod. The reverse holds true as well for a sub par caster and short casts. That input though can only come from the individual caster's preferences. For most people and post instances though, ELN = ERN is a dead match for what feels good.
For instance, when the common cents system first came out, a lot of guys went back and measured rods that they just couldn't quite find the right lien for. Maybe it was that 'fast' 5 wt that never seemed to load right. Suddenly the CC system says the ERN of that rod is 8.25. Now the person can start with an 8 wt line and viola!- it casts beautifully! Each person would find in short order what ELN/ERN correspondence they prefer for their fishing.
Then consider that a ELN of 5.5 is the center of the 5 wt grain wt range and you've got an easy way to somewhat relate between the two systems.
Thanks,
Casts