Primitive Archer
Main Discussion Area => Bows => Topic started by: Frode on December 21, 2009, 09:37:33 pm
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Hi all,
This is a (new) maple bow I'm in the midst of tillering, and I wondered if I could prevail upon you for some fresh eyes. It looks even to me, but...
A second question, I have some braided nylon rope small enough to fit in the nocks, rated at more strength than I'll ever need. Is it suitable for long string tillering? My original dacron long string frayed out in the served loop and began slipping.
Thanks,
Frode
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looks good to me, keep on keeping on!
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Give mid limb on some scrapes-both limbs. I use sash cord for the long string. I bet what you have is fine. Jawge
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Thanks riley and George,
I got the string on, and one of the limbs is visibly stiffer (sorry, no pic yet), so I'm filing and sanding. I'm trying to get this one down to around 40#@28, so it's shave and check, shave and check. I suppose it will get faster, but right now the old "easy to take off, hard to put back" rule is still very top of mind. It get's done when it get's done, I guess.
George, do you mean the cotton type sash cord? (The nylon stretched more than I liked, but I was able to rework my dacron string to bypass the fraying.)
Thanks,
Frode
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With that small amount of bending, it's hard to tell what is going on. Scrape some more, and make it bend some. Almost any sort of low stretch small diameter cord will do for a long string. Remember, don't use the long string too long! Get it bending just enough to low brace it, and then the real tillering begins. ;D
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Looks good; just be careful at the fades...
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I just went to the hardware store and bought it. Sash cord the package said. Now, that's the ticket. Don't you be in a hurry. She'll wait for ya to catch up. :) Jawge
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Looking good so far,just go slow an inch at a time ,little scrapping and bend a little more each time.Don't forget to exercise after each scrape.Take your time it will come around. :)
Pappy
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Don't forget to exercise after each scraping session of 20 passes or so. I drop down and do 10 push ups after each session. :) Jawge
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Don't forget to exercise after each scraping session of 20 passes or so. I drop down and do 10 push ups after each session. :) Jawge
LOL!!! Jawge you are quite the comedian lately!
Tiller looks great so far but as others have said you can tell more after first low brace. Good luck on this one your last maple bow looked excellent! -josh
:) -josh
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Thanks everyone,
Like most of my projects, this one is going through the usual phases;
1. This will be really cool! ;D
2. This is an unmitigated disaster! >:(
3. Wait, this might actually work... :-\
From there, of course, it can go to;
4a. Huh. It worked! :o
4b. We will speak of it no more. >:(
Here it is this morning, easing into Phase 3, I think. I look at it, then I flip it and it looks different. What say you?
Thanks,
Frode
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it DOES look a little different from both braced pics. Make sure that it is the same thickness ACROSS the limb, that might be your problem. the first picture of the braced profile looks like that is the offending side on both limbs so check there first. It is hardly noticeable so maybe just a few scrapes will fix it. Overall good job so far man! -josh
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... the first picture of the braced profile looks like that is the offending side on both limbs so check there first. It is hardly noticeable so maybe just a few scrapes will fix it. Overall good job so far man! -josh
Thanks, Josh,
Just to clarify for me, were you referring to the left limb? And that leads to another question, it sticks in my mind that I read of someone claiming to use a scraper while the bow was braced, but I can not find the reference anywhere. Is it true? Is it safe, even? Just curious, I don't have any scrapers yet anyway.
Thanks again,
Frode
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Looking real good so far.
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You can but I don't recomend it,it looks pretty good,the right limb in the last picture looks like it needs a little mid 1/3 of the limb. :)
Pappy
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The left limb in the top picture looks like it needs to bend a tad bit more in the first 1/3 of the limb. since it only looks like that in the first photo and not the second, I think you should check the thickness of both sides of that limb in the first 3rd and make sure they are the same thickness. But that's just my opinion, I am definitely no expert. ;D :) -josh
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OK, here it is after fiddling and fussing around a bit. It's been drawn halfway 70 or 80 times in addition to exercising after each material removal. Right now it's 30# @ around 14".
I've seen estimates of draw weight given on other in progress bows, is there a rule of thumb to predict what this will do at 28"?
Thanks,
Frode
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most of the time it is 3-4 lbs of draw weight per inch from around 14 or 15 to 28" that is the rule of thumb i usually use to estimate my draw weight. If it's 30 lbs @14" right now, a conservative weight at 28" right now is around 72 lbs. :) -josh
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Thats about how I estimate it ,about 3 lbs per. inch. :)
Pappy
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That's about what I use , as well. However, it also depends on bow and design. I've found with heavy bows, it's more like 5# per inch.
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...and shorter bows get more lbs per inch towards the end of the draw... called stack. :) -josh
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Hi all,
Here is the bow you've all been graciously helping me eyeball. As of right now, it pulls about 45# at full draw. The bottom limb looks thicker, but that's just a flash shadow from the camera. Comments?
Thanks,
Frode
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