Author Topic: Tillering help  (Read 2016 times)

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Offline NewBowyer

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Tillering help
« on: May 17, 2020, 06:11:28 pm »
Starting a new thread for this bow because the previous thread on tillering apps strayed far from its title. I’ve worked this bow (my first) all afternoon and feel it’s getting close but mental fatigue said to stop for today. Has one weaker limb with a slight hinge that was starting to form. I’ve tried to eliminate that “pre-hinge” and equalize the limbs. Seems like progress but still not there yet- what do you all think? See my tillering app thread if you want to see what it looked like yesterday. I’m thinking the outer half of the left limb needs to bend more? Please don’t use the fence as a reference- I know it’s deceiving but the tillering tree doesn’t sit against it squarely or level.

Offline DC

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Re: Tillering help
« Reply #1 on: May 17, 2020, 07:54:52 pm »
Are you still studiously avoiding the hinge? Good boy!

Offline NewBowyer

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Re: Tillering help
« Reply #2 on: May 17, 2020, 08:03:33 pm »
Absolutely; I marked it off and wrote "NO" so I was sure not to touch it. Can't say it's completely gone, but almost. Worked mainly on the stiffer limb but also tried to improve the overall curve in the hinged limb with SLIGHT GRADUAL adjustments. It's better than it was.

Offline DC

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Re: Tillering help
« Reply #3 on: May 17, 2020, 08:08:39 pm »
Sometimes it takes a lot to get rid of a hinge. They can bring you in under weight quite easily.

Offline NewBowyer

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Re: Tillering help
« Reply #4 on: May 17, 2020, 08:19:26 pm »
Yes but I'm not too concerned with hitting a specific weight as this is my first bow. Any thoughts on the outer half of that left limb? Or anything else?

Offline DC

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Re: Tillering help
« Reply #5 on: May 18, 2020, 10:27:31 am »
If you're not using a Gizmo, now is the time to start :D

Offline NewBowyer

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Re: Tillering help
« Reply #6 on: May 18, 2020, 10:41:52 am »
Making that gizmo was Step One of yesterday's proceedings.  :D Step Two was modifying my tiller tree with holes for a dowel.

Offline DC

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Re: Tillering help
« Reply #7 on: May 18, 2020, 11:06:54 am »
Why don't we have a "thumbs up" emoticon? :D

Offline NewBowyer

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Re: Tillering help
« Reply #8 on: May 18, 2020, 03:53:20 pm »
This pic is at 26”. (I’ve drawn it to 27” but don’t have a hole there for the peg.) 46#. The gizmo was invaluable. I’m seeing the left limb needs to bend a touch more in its outer third and the right limb needs to bend just a bit more in its inner third. What do you all see?

Such a huge help to have input from people who know what they’re doing.

Offline Eric Krewson

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Re: Tillering help
« Reply #9 on: May 18, 2020, 04:25:56 pm »
I only use the gizmo to 20", usually you have to drop poundage if you make a bow with a gizmo, as I do I recheck at 20" for any place you may have left stiff while dropping oundage. I do eventually draw the bow to full draw a little bit at a time as I adjust poundage, I still check it at 20".

I have found if you have things perfect at 20" it carries on out to full draw.

Offline NewBowyer

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Re: Tillering help
« Reply #10 on: May 18, 2020, 04:40:13 pm »
Got it just past 28”! Drew it that way a few times to get a good look but didn’t leave it that way on the peg. Felt like I was really close to doing the final touches.

Offline NewBowyer

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Re: Tillering help
« Reply #11 on: May 18, 2020, 04:41:55 pm »
Then when I took it off the tree and started to draw it by hand, this happened! And I was barely at 3/4 draw!  >:( It’s at that small almost-hinge just above and to the left of the scale in the pic above. Guess I never quite got rid of it completely.

Offline RyanY

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Re: Tillering help
« Reply #12 on: May 18, 2020, 06:31:41 pm »
That type of break isn’t from poor tillering. The wood looks like it’s started to rot and the break agrees with that.

Offline NewBowyer

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Re: Tillering help
« Reply #13 on: May 18, 2020, 07:01:25 pm »
Yes it was a dead tree I picked up off the ground before I'd learned that seldom works; it had been down for over a year lying in the woods. I didn't figure it'd work after I found that out, but after I got so close... 😠 Plus I figure it was good practice anyway. I still think I should have been more diligent with that hinge- note the big difference between 26" & 28" draw.

Offline NewBowyer

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Re: Tillering help
« Reply #14 on: May 18, 2020, 07:48:59 pm »
Here's the back