Tillering question
Hello, gents. Nice place you have here! I've just finished roughing out my very first bow, a red oak flatbow. I'm shooting for 45# at 32 in. for this one. Last night I made myself a tillering stick,...
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Richard,Never fear. Problem-solving is fun for me. Doing the job well with what's available is usually more fun and satisfying than buying a solution. That's at least partly why this whole traditional...
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I wouldn't do that at all. You only need a very few pounds of draw weight in the begining of the tillering process to show where it needs help. Anything over that will only put unwanted stress in the...
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Dad, Are getting enough feedback ? Do you notice the striking differences between all our brothers ? You have the analytical ones who love (like many scientists and engineers) to measure everything,...
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Oops. I have been thinking about the mechanical advantage of the rope & pully arrangement to lift the free weights........ I believe the mechanical advantage does not go away when the wieghts lift...
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Alex,It's 72". I've looked at 32" when the bow is on the tillering tree/stick and thought, "Really? All the way back there, huh? Well, OK. I guess." I probably should've known. I'm 6'3" and have the...
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Dad One, I think Woodbear and I are in agreemnet re:the mechanical advantage. It's ok that it is there just be aware of it. You'll think ou are making a 50 lb bow when you are at 95# (LOL. Let us not...
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Dad One, there are several big guys like you that I know in our group, they have, like many others, have adopted a shorter, more "indian" style of draw for their wood bows....along with other...
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Dave,You could be right. I looked at those diagrams last night and I saw what I think you're seeing (or what you're remembering), but I was pretty sure that I had an explanation for why the bow wasn't...
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Dad One, In good physics fashion, you are ignoring the weight of both the pullys, and the rope, in addition to having frictionless wheels & rope. If I get you right, when the weight lifts off the...
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Dave,On the set question: Eyeballin' it, there's less than an inch of set at this point. Unbraced, the tips don't extend as far "backward" (bellyward) as the belly side of my riser, which is 3/4 in....
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A spring scale is pretty inexpensive. There was an article in PA a few years ago with a double pulley set up arrangement for a tillering set up. BTW. Think of the old block and tackle used to lift...
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Once again. I will after this post let experience be your teacher. LOL. Each string of the pulley system (not counting the one you are holding in your hand) yields an ideal (doesn't count friction,...
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If you have any doubts about a mechanical advantage an easy way to tell is simply pull your rope say 20" then measure how far the object pulled, if it is also 20" there is no advnatage, if it is 10"...
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George,Yes, I suppose a scale probably would be the simplest solution. I'm sure I'll buy one eventually.
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For a cheap scale, go to Wallmart, and look in the fishing section. I got the "expensive" scale for about $20. It goes up to 50#, or 25kg in 10g steps. This is enough for a 40-50# bow scale, and seems...
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Dave,Yeah -- in fact, used on the free end of a rope run through a pulley arrangement, it could be good for a 100 or 150 pound bow scale! I know, I know: Always the pulleys with this guy!
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Holy Moly. No wonder your playing with free weights. I bought a Hanson Hand Held Bow scale from 3 Rivers. Weight registers and stays and it is relatively inexpensive and also gives you the option of...
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You are doing fine for your first bow..Aids like weights,mirrors tillering set-ups all make this learning process easier..After a little playing with this stuff you will have your own "method"..With a...
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