Rim Chung's Nymph Fishing Methods Including the RS2 and Avatar Flies


Beaver Fur For Fly Tying the RS2 Fly

I am often asked where to get the beaver fur used for tying the RS2.  We dyed all of our own over the years, but here is one source of a commercial version.


Dying Beaver Fly Tying Materials

You can start with grey and brown beaver pelts, they are readily available on the fur and I see bits of the pelts sold all over the Internet now, but Wapsi also sells beaver on the pelt.  Just get the longest fibers you can find (the Alaskan beavers have longer hair than a beaver harvested in Colorado) and you want at least 3/4″ to the underhair (the guard hairs are always much longer and were the original tails of the RS2 before Rim found microfibbets were more durable, which were invented much later).  You can “bleach blond” a brown piece with hydrogen peroxide and you will have cream

Soaking a piece of fur in straight bleach is not what you’d expect; the bath starts to heat to the point where it may melt the plastic bowl, likely a reaction to chemicals the hide was steeped in during the tanning or hide preparation process, then hair and flesh start vanishing and the rest turns into a flesh colored slag that covers what’s left of the fur with a gooey bubblegum residue.  Eventually you kind of back away until the temperature lowers to the point you can throw what’s left into the trash.

In fact, bleached hair patches and lightened colors on furs and feathers have typically been treated with Hydrogen Peroxide or similar lightening agent, not bleach.

Hydrogen Peroxide is available in any supermarket or local drugstore, it’s an antiseptic and is sold as a 3% solution in the aisle with medical supplies and liniments. This concentration can lighten hair (human and animal) with numerous applications or one long soak.

The center color above was “bleached” in a single bath of 3% peroxide. It took 92 hours to achieve this color from its natural gray. Four additional pieces I’ve dyed yellow ring the bleached color. As it is now, tossing a chunk into a drawer ensures a lifetime of Light Cahill’s.

Natural beaver is much too dark to be able to dye into light colors, at best it’ll turn muddy-dark. The above pieces were dyed in the identical pot for the same amount of time. Only the bleached hide can achieve the light olive I was attempting.

So long as the fur is completely submerged the peroxide bath will ensure consistency of color. Note in the above photo how the Olive color is uniform from downy underfur to the tips. This is done by first pumping the back of the hide to force all the air bubbles out of the material, then dumping the result straight into the solution without wringing.

Beaver guard hairs will resist the dye mightily, and might only take on a tint of the desired color, this is true of most tough hair, especially those of the aquatic mammals.

Hair stylists use a powdered lightener along with Hydrogen Peroxide to avoid “orangey” colored hair like the above. Internet forums mention that straight peroxide often yields an orange effect on human hair. Once the fibers are any shade close they should be pulled and dried anyways, as they’ll lighten into a tan-orange which is perfect for our later applications of dye.

Peroxide is available in food grade as well; solutions ranging between 8% and 35% and a cost commensurate. These will cut the time down significantly, 12% took the same beaver from gray to tan in just over 18 hours, but the solution costs around a dollar an ounce at that concentration. Most of the higher concentrations have to be mail ordered and signed for by someone over 18 as well.

Every animal is a bit different both in qualities and texture of their hair, and degree of lightening needed to reduce their natural color to something light enough for dye. It’s best to experiment with small chunks to determine how long the base 3% will take to render an appropriate shade for your use.

Just tuck a large bowl of the cheap stuff ($2.00) into the garage, carve the hides into 5×5 pieces and check the mix come the weekend, there’s little risk of it getting too light.



The Best to Fish with a Fly

“The best way to fish with a fly would be to drop the fly into the river and the fish would eat it.  However, there are two problems with this technique—one theoretical, the other practical.  The theoretical problem is how would we know when the fish ate it and how would we know which fish.  The practical problem is that there is no way to retrieve the fish.  Therefore, we must use line.”            

                                                                                                                                 –Rim Chung

Rim Chung’s RS2 fly is now or has been sold throughout the United States by most of the major commercial fly companies such as Orvis, Umpqua, L.L. Bean, Dan Bailey’s, and many others.  Yet, Rim Chung remains largely an unknown.  He has never promoted himself, his fly, or his method of fly fishing.  Rim Chung has no commercial interest in fly fishing, he is not a guide, nor has ever sold his fly, nor has he ever sought or been offered compensation for the flattery of the copies of his flies, which are now widely distributed.  The purpose of this site is not commercial and the upcoming book about him is simply a tribute to his legendary success in fly fishing with the nymph–simply ideas which I hope you might discover as useful as I have.

Copyright 2011, entire site, all rights reserved, no images or text may be reproduced or reposted in any fashion whatsoever without the express written permission of rimchungflyfish@gmail.com.