Rio fly lines - the Accelerator review
- one of a kind!

spey casting instruction and tuition letsflyfish

Rio Accelerator Spey line


Unique WF design claimed to produce exceptionally tight loops due to its complex taper. In addition to the normal taper profile, this line has another swelling like a mini DT portion on the end of the line. The smaller diameter section between this and the tapered head is intended to hinge and tighten the loop for better casting. At the end of the cast, the heavier portion is designed to flip over and accelerate to straighten the leader, hence the line's name. Head length including all the tapers is 80 feet and the running line is 0.04 inches diameter. Yellow in colour.


First impression of this line was that it felt stiffer than the others. We had no idea what to expect from its unique complex taper design and very much looked forward to trying it out. Rio include a well illustrated booklet and reasonably good instructions on how to cast with each of their lines, The techniques described are more suitable for the softer actioned rods favoured by some Americans than the rods we tested with. According to the book the narrow portion between the front tapers of the Accelerator or "hinge" as they prefer to call it, "accelerates the energy on the final forward delivery and kicks over the tip no matter how windy". I think I know what Jin Vincent is eluding to here but have some difficulty understanding how it can possibly work unless the cast is overpowered in the first place. The other advantage he claims is "because the tip is two line sizes lighter, the fly lands on the water lightly instead of crashing to the surface as is the case in a heavy double taper". The book contradicts itself when it goes on to say "If you do not want the thin forward taper or have to deal with large heavy flies or tube flies and constant wind, you can cut this line exactly 18 feet from the tip". At 45 feet the line behaved very well and shot three yards easily with good presentation and turnover although it did feel light on the stiffer rod. At 75 feet the narrow loop at the front caused by the hinge effect became quite noticeable. It was obvious how it kicked the tip section of the line over like a whip before the whole line straightened and fell nicely onto the water. I felt that a certain amount of additional effort was required to make it work properly. With just a little bit less effort there is a tendency for this line to "tuck" or fail to turn over correctly beyond the hinge. Overall a somewhat quirky line which, despite that, could be made to perform well at long distances but I didn't like it when casting at distance into a wind. It was then difficult to turn over. The ideal casting length seemed to be when the belly was brought into the hand, (just like the book said) then the rods loaded beautifully throughout and allowed long smooth shoots. Whilst I was doubtful of the benefit of the profile regards turnover, I got the impression that it may have helped to anchor the 'D' loop firmly and produce better loading.

top of page
Copyright 2007 Alastair Gowans AAPGAI and FFF Master and THCI, APGAI. All rights reserved.