Home › Forums › Friends of FOC › shafts: tapered vs. parallel

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    • tombow
        July 22, 2012 at 8:25 pm
        Post count: 103
        #6020

        Still researching the next wood arrows that I plan to build and looking into FOC increases and a relatively heavy arrow (around 700 gr., 200 gr. Grizzly). A 10″ tapered shaft will yield an increase in FOC as more weight is toward the front of the shaft, correct? If I am looking at tapered vs. parallel shafts, my thinking is that tapering will effect the initial spine of the shafts, correct? If so, what is typically seen, I am looking at 80-85 gr shafts which should put me in the right dynamic spine for my bow, do I expect when ordering shafts that 85 spine shafts will turn into 80 or lower, or am I missing it that ordering tapered shafts in 80 spine will provide me with 80 spine shafts. Possibly a dumb question but if I don’t ask, how am I to learn. (Please provide a bit of slack if the answer to the above question is obvious to some, may not be obvious to me without some knowledgeable back-up)

        And to those of you who have shot both Par. and Tap. shafts, do you have a preference and, if so, why?

        Thanks.

        TomBow

      • Fletcher
          July 22, 2012 at 9:36 pm
          Post count: 177
          #47079

          Increasing FOC is a matter of adding weight up front and removing it from the back, so you are looking in the right directions. Tapering is a good start. How much weight and spine is lost depends on the length of taper, spine and weight. A 10 inch taper on a 500 gr 80 lb shaft will lose about 2-3 lb spine and 15 gr weight. I taper all my shafts and spine them after tapering. If you buy your shafts already tapered, ask if they are spined after tapering.

          As you might guess, I like tapered shafts. They just shoot better for me. It’s all theory, but along with moving the CG forward, I feel it helps the arrow flex more evenly and recover from paradox quicker, kinda like it “tillers” the arrow.

        • Troy Breeding
            July 24, 2012 at 1:02 pm
            Post count: 994
            #48880

            Fletcher pegged it just about right on how much spine and weight reduction you get when using a 10″ taper.

            Thats why I only used a 9″ taper when I was in the arrow and shaft business. On average the spine loss was approx 1# and weight averaged from 5 to 10grs.

            Wether you use 9″ or 10″ is up to you. Either will make for a better flying arrow.

            Troy

          • tombow
              July 24, 2012 at 7:46 pm
              Post count: 103
              #49172

              Thanks for taking the time to reply. Again, I am early into the research and testing phase of wood arrows but am very happy with my first set of woods. I am almost ready to pull the trigger on a set of High FOC woods. Just a little more research and decision making on my part is left. I have been using Stu’s calculator like a madman, tweaking spines and weight information to try and find the right combination that will yield what I am looking for.

            • handirifle
                July 25, 2012 at 3:42 am
                Post count: 409
                #49553

                Seeing that the nock taper is supposed to be cut BEFORE tapering, down to say, 5/16″ from a 11/64 shaft, would you use a 5/16 nock or 11/64?

              • tombow
                  July 25, 2012 at 1:13 pm
                  Post count: 103
                  #49970

                  Seems to me you’d use 5/16 as that would be the diameter of the nock end of the arrow.

                • handirifle
                    July 26, 2012 at 2:11 am
                    Post count: 409
                    #50568

                    Tombow wrote: Seems to me you’d use 5/16 as that would be the diameter of the nock end of the arrow.

                    But my tapering tool, would not allow the 5/16″ taper tool to fit over an 11/32″ shaft, at least I don’t think so.

                    If you used the 11/32 tool, would the 5/16 nock fit when the shaft is tapered?

                  • Fletcher
                      July 26, 2012 at 3:06 am
                      Post count: 177
                      #50598

                      handirifle wrote: [quote=Tombow]Seems to me you’d use 5/16 as that would be the diameter of the nock end of the arrow.

                      But my tapering tool, would not allow the 5/16″ taper tool to fit over an 11/32″ shaft, at least I don’t think so.

                      If you used the 11/32 tool, would the 5/16 nock fit when the shaft is tapered?

                      Yes. The end of the shaft is tapered to a 5/16 dia at the nock taper.

                    • handirifle
                        July 26, 2012 at 3:29 am
                        Post count: 409
                        #50613

                        OK thanks

                      • wojo14
                          June 21, 2014 at 1:00 am
                          Post count: 325
                          #49492

                          So, if I normally shoot 50-55 shafts, and I want to taper new shafts for more FOc and go up 45 grains in the tip, should it go to 55-60?:?:

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