Home Forums Bows and Equipment Reducing draw weight

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    • Ralph
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        Post count: 2580

        I have a boo over Osage composite wood bow and would like to take a few pounds off of it. I have successfully done so on fiberglass laminated longbows and also recurves (longbow basically narrowing the limbs, recurve, thin the limbs by taking material off the back). Should I approach this with any difference being the bow being a laminated wood longbow?

        Ralph

      • coastalbendbows
          Post count: 120

          You can do it the same way just be sure to measure the tiller before starting that way you can keep the till the same as before. I would trap if it were mine. But only a little bit at a time. Hope this helps.

        • Ralph
          Moderator
          Moderator
            Post count: 2580

            Thanks, that’s what I was going to do, just needed a confidence booster. Was kinda concerned about trapping some more on the boo/Osage joint. Little bit at a time it will be for sure. Thanks again, Ralph.

          • shotsome
              Post count: 33

              R2,,I have wanting to lighten a bow also,, recurve, 75Lb at 28# glass. Did you just bandsaw the limbs? Or what, on the ones you have done?

              thanks, Ernest.

            • Ralph
              Moderator
              Moderator
                Post count: 2580

                Hey Ernest from what I know that might not be the way to go. See if I can kind of do this: You need to put a strip of masking tape, on the face of the bow, midways between fade out & tip of both limbs and midways between that point and tips. String bow, measure your brace height, distance from string, top and bottom limbs, to inside of bow in both places taped and record measurements. With unstrung bow it’s a tedious process of taking wood down, on the trap is what I do, like 10 strokes, with fairly rough file, on each limb side. You’ll get the feel but be nice to the bow as you learn. I do maybe 10 strokes twice on each of the 4 limb sides then restring bow and check all your marks. You can tell then if you be doing more or less on either end. I always go for the bottom limb to be a 1/16″ to 1/8″ closer to the string than the top (bottom limb stiffer). When you get close to your goal, go finer with your tools and sandpaper like with any project.

                There may be other bows that differ but my old buddy of Yellow Jacket longbows was very particular about tiller and thus am I.

                I have only managed to get 4#’s max weight reduction. Be careful, be gentle and don’t get in a hurry. I did trap the opposite side of one bow from what was original to get a bit more weight off. Worked. I still shoot it a lot. 52# down to 48#.

                A recurve is totally different. You take “meat” off of the insides of the limb. I’ve only done one recurve and I’m glad it still shoots great cause it worried me that I might not have had a clue what I was doing.

                Any help from you guys on methodology or if I expressed myself incorrectly, please. Thanks, Ralph. Good luck.

              • shotsome
                  Post count: 33

                  Thanks Ralph,,,band saw,,no,,file ok. Will wait untill others post some ideas. I knew it could be done. I am shaving on a osage stick bow at the present. So have time to explore the issue.

                  Ernest.

                • coastalbendbows
                    Post count: 120

                    Are you planning on trapping the back of the bow ? I hope you are it’s the best way to trap one for weight reduction.

                  • shotsome
                      Post count: 33

                      How do you Trap a fiber-glassed Bow,,,Limbs? 😳

                    • Ralph
                      Moderator
                      Moderator
                        Post count: 2580

                        I’m not the artist, I dug this up, but here is what it looks like. Hope it’s clearer than mud.

                      • Ralph
                        Moderator
                        Moderator
                          Post count: 2580

                          “This is a sketch of a cross section of how I make my limbs. It isn’t exact because I did it on paintbrush, but it’ll give you the idea of how I trap my limbs. It is a trapazoidal shape. The angles on the sides are the actual “trapping” cut. Most guys don’t make them quite as pronounced as I do but I think they look good that way. I mark the side of my limbs 1/3 down from the top all the way down the limb, then mark the back at those points the same distance from the edge that I marked down from the back…if that makes any sence. I use a 45 degree angle.”

                          This I copied and pasted from whence I find picture. Hope it make “sence” 😆

                        • coastalbendbows
                            Post count: 120

                            Yep that’s the way I do it when I come in heavy. Best of luck post some pics when your finished.

                          • shotsome
                              Post count: 33

                              Much Thanks guys. 😀

                              Will finish up a couple of other projects, and go for it.

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