Primitive Archer
Main Discussion Area => Bows => Topic started by: osage outlaw on December 15, 2010, 01:13:26 am
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I could use a few extra eyes on this tiller. It is at a brace height of 2-3" and is drawn to 21" and 50# in the photo. This thing is really stubborn and has been fighting me the entire way. It has about 2" of natural reflex.
(http://i141.photobucket.com/albums/r55/clintanders/SDC11072.jpg)
Thanks for any help.
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Forgot to mention that the limb on the left is a little shorter. I think around 3/4 or 1".
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Its hard for me to comment on tiller without knowing the front view shape. Anyways, unless its a pyramid bow I'd say its bending too much out of the fades. Right limb looks stiffer in the outer two thirds.
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Ditto
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I would say the same,but also I would get it to full brace,it may look different then.I would do that first before I did any scraping. Looking pretty good. :)
Pappy
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Thanks for the advice. I see the stiff area on the right limb and I hope to get it to full brace on Thursday.
Another question. On the tips where you file the string grooves, how narrow can you go between grooves on the bows back?
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" On the tips where you file the string grooves, how narrow can you go between grooves on the bows back?", it depends on a couple things, like the depth of the nock, final draw weight and the design taper of the limb. If your dimensions are close to final design, you can always string it and put some arrows through it before final tweaking, sanding and finishing...with osage you could probably go as narrow as 3/8" between nocks with no problems.
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I would also get it to a higher brace. It is certainly bending evenly, but I would remove wood from the outer half of both limbs.
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Will you post a braced and unbraced pic. Back profile too. Looks like the reflex is through the handle and that makes it look off coming off the fades. I think the fades look good.
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The fades look ok to me as well. The mid limbs on both sides apear a little flat. That's where I'd be scraping.
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That bow is ready for the Gizzmo. That will tell you where it is not bending right. Dean
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Good eyes. Mid limb right limb just a tad flat. Fix that and gradually increase your brace height 5 twist at a time. YOu didn't say what your draw length is and what your target weight is. Be careful with reflexes they show a highly early draw weight which might trick you into thinking your stave is too heavy. Except for that right limb mid lib looks darn ood to me. YOu should be using a scraper like tool now. Jawge
http://georgeandjoni.home.comcast.net/~georgeandjoni/
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That bow is ready for the Gizzmo. That will tell you where it is not bending right. Dean
I tried the gizmo, but one of the limbs is real wavy side to side so it didn't work to well. I will work on it some more and post pics this weekend. I will also get some braced and unbraced shots.
4"-6" of snow predicted tonight. As long as I can make it home in the morning, it should be a great day to work on a bow. I'm going to turn on the heater and put on some BB King to listen to. Man, it doesn't get much better than that!
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ok i am the new guy so what is the gizmo
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Do a search on this site for "tillering gizmo" It is an easy to make little tool that helps identify portions of the limbs that aren't bending. It doesn't work as well on certain character bows.
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Iowabow, send me your mailing address and I'll send you a couple gizmo's. Compliments of a good friend named Dave H. that made me a box full of them for rendezvous gifts. ;)
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I managed to get an hour of free time today and did a little more yellow wood removal.
Here is the unbraced view.
(http://i141.photobucket.com/albums/r55/clintanders/SDC11112.jpg)
Braced to 4.5"
(http://i141.photobucket.com/albums/r55/clintanders/SDC11116.jpg)
And drawn to 23". It still might be a little flat on the right outer limb, but it is better. The left limb being shorter makes it look a little off to me. I am aiming for 55# @ 27", so I might round off the edges of the limbs a little and then sand the tool marks out and see where I am at.
(http://i141.photobucket.com/albums/r55/clintanders/SDC11123.jpg)
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Looks pretty good to me.
Del
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Looks quite good. Good work. Jawge
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right limb in photo flat in inner 1/3?
Jeff
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I'd call that done if it was mine.