Largemouth Bass Lineup

Largemouth Bass Lineup

Tuesday, July 22, 2014

Older Fly Rods and Their Line Weights

Since I have started collecting vintage fiberglass fly rods, I have discovered that they used a different coding system for telling the angler what line weight the rod was designed to be fished with.  I have been asked a few times to tell people what line weight their old rod will work best with.  Since I have often used a chart such as the one below, I decided to share it here in case others might find it helpful or interesting.  So, without further ado, here is a chart showing how to convert older fly line weights:

AFTMA fly line weights - conversion to "old style" letter designations (best estimate)
AFTMA No.Avg Weight in Grains (a)Range: Mfg TolerancesDouble Taper (DT)Weight Forward (WF)Level (L)
28074-86IHIIHJH
310094-106IGIIGJG
4120114-126HFHHFGF
5140134-146HEHHEGE
6160152-168HDHHDGD
7185177-193HCHHCFC
8210202-218GBGGBFB
9240230-250GAGGAFA
10280270-290G2AGG2AF2A
11330318-342G3AGG3AF3A
12380368-392G4AGG4AF4A
13430418-442---


(a) Per 3M Worldwide / Scientific Anglers(tm), based on first 30 feet of line, exclusive of front level tip. (1 oz. = 437.5 grains)

Chart is courtesy of the Fly Fishing Forum and can be found at www.theflyfishingforum.com

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