Author Topic: First heat treat  (Read 6001 times)

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Offline Aries

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First heat treat
« on: April 17, 2008, 12:09:24 am »
Well this bow is a few firsts for me. This 62" Osage holds 1/1/2" of unbraced reflex, it pulls 50# at 27".  This was my first attempt at heat treating, and it improved the performance greatly. This 50#er shoots almost as fast as my 60# Osage recurve.  This was also my first asymmetrical design, the top limb is 1/1/2 longer than the bottom, as described in Hunting the Osage Bow. I think i butchered the tiller, but i didn't want to drop the poundage anymore than i already had, I will know better what to expect the next time I try for a bow of this style.   Any tips on tillering asymmetrical limbs would be great ;D   Ty

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"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Offline Ryano

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  • Ryan O'Sullivan, North Western Pennsylvania
Re: First heat treat
« Reply #1 on: April 17, 2008, 12:12:40 am »
Looks ok to me, my tip would be dont make your limbs asymetrical......lol.
Its November, I'm gone hunt'in.......
Osage is still better.....

Offline Ryano

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  • Ryan O'Sullivan, North Western Pennsylvania
Re: First heat treat
« Reply #2 on: April 17, 2008, 12:13:27 am »
Does that bow have a sapwood back?
Its November, I'm gone hunt'in.......
Osage is still better.....

Offline Aries

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Re: First heat treat
« Reply #3 on: April 17, 2008, 12:27:57 am »
No, It is just low density heart wood, The reds spots are reel wild, they give it a nice leapord look 8).  And curiosity lead me in making the limbs of dif length, Torges ideas sounded reasonable enough..   ;D  Ty
"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Dustybaer

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Re: First heat treat
« Reply #4 on: April 17, 2008, 02:47:42 am »
don't want to sound too critical, but i seem to detect a stiff area about lower mid-limb on your left (lower?) limb.  on the right, the mid limb could bend a little more.  the tip on the left limb seems to travel a little further (but might be the angle of the picture), which should give you a little room to bring the bend out towards the tip on the right, while weakening it to match the left.  but since i'm a newbee, take my words with a grain of salt and listen to the more experienced bowyers on this board (like ryan)  ;D

Offline DanaM

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Re: First heat treat
« Reply #5 on: April 17, 2008, 10:46:06 am »
Like ryano said make the limbs the same and some larger pictures would help,
my eyes ain't as good as they usta be. Other than it looks pretty good
"Prosperity is a way of living and thinking, and not just money or things. Poverty is a way of living and thinking, and not just a lack of money or things."

Manistique, MI

Dustybaer

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Re: First heat treat
« Reply #6 on: April 17, 2008, 11:45:25 am »
maybe this picture explains better what i mean:

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Offline GregB

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  • Greg Bagwell
Re: First heat treat
« Reply #7 on: April 17, 2008, 03:06:17 pm »
Per Marius example, might be bending a little much on the lower limb just out of the fades?
Greg

A rich person can be poor monetarily, the best things in life are free...

Offline Aries

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Re: First heat treat
« Reply #8 on: April 17, 2008, 11:08:40 pm »
Ya i knew it was off, but i really wanted to keep this bow shootable, and not drop it to far below weight. i will take some more time on the next one before i heat treat.  ty
"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Offline OldBow

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  • I'm just an old retired biology teacher.
Re: First heat treat
« Reply #9 on: April 18, 2008, 12:57:57 am »
I'd go for broke and gently remove a little of the right belly wood. Might not take too much to even up the limbs. My view is that a bow that is a little under weight but is well-tillered is the goal.
When you're retired, every day is Saturday

CutNShoot

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Re: First heat treat
« Reply #10 on: April 18, 2008, 08:00:40 am »
Dusty bear, how do you make those ovals on the pics if you don,t mind?
Looks okay and sometimes your better off to leave well enough alone! I would shoot it and start another one. ;D

Dustybaer

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Re: First heat treat
« Reply #11 on: April 18, 2008, 08:18:10 am »
it's quite simple: open the picture in MS paint (it's part of windows) and select the ellipse tool.  i start in the upper left corner at the same hight with the handle and somewhere above the left tip.  just play around with it, you'll see how easy it is.

CutNShoot

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Re: First heat treat
« Reply #12 on: April 18, 2008, 12:44:49 pm »
Thanks Dusty Bear I'll give it a try ;D

Offline Aries

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Re: First heat treat
« Reply #13 on: April 18, 2008, 04:29:00 pm »
since i have already heat treated the belly, wouldnt removing belly wood have an adverse affect on the heat treated wood?
"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Dustybaer

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Re: First heat treat
« Reply #14 on: April 19, 2008, 05:39:20 am »
well, you could always heat treat it again.  plus, less draw weight with better tiller doesn't automatically mean a loss of arrowspeed.