Author Topic: My first limbs! IlF (Read 2160 times)

Appalachian Hillbilly · « **on:** February 21, 2022, 08:43:30 PM »

Got my first set of limbs finished today! Well, almost. Still need to work on tips to get them equal and still need to tiller. Was so anxious to shoot them, I threw on a coat of matte and shot them this evening. One limb takes one more turn than the other to get even tiller, so I know I have one to work on.
Goal was 45 lbs and I hit 43.

This was two .001 tapers and one .001 reverse taper. I want to try some different tapers next.

Appalachian Hillbilly · « **Reply #1 on:** February 21, 2022, 08:48:12 PM »

I want to explore the effects of different taper amounts on stability at brace height. I braced this one at 8" and it shot very well. At 7" it was too floppy. 6.5" and it would flip flop ....one end a recurve and the other a longbow

Mad Max · « **Reply #2 on:** February 21, 2022, 08:55:50 PM »

Lookin good

Crooked Stic · « **Reply #3 on:** February 21, 2022, 09:36:31 PM »

That looks nice the reason those limbs are floppy is because the reflex starts too soon off the wedge I have found you need to stay straight for a bit off the wedge.

Appalachian Hillbilly · « **Reply #4 on:** February 22, 2022, 05:14:45 AM »

That was what I was thinking as well after playing with it awhile. I will try a power lam to get a little more reinforcement in that area.

I can also move my stop pin in the form. That will give it more straight area and a little less recurve.

Pointed_stick · « **Reply #5 on:** February 22, 2022, 08:08:13 AM »

Looking good!! I haven't ventured into takedown bow building just yet...I am sure I will have a go at it at some point. Nicely done!

Crooked Stic · « **Reply #6 on:** February 22, 2022, 02:30:53 PM »

Yeah moving the stop pin would be the first thing I would do.

Buemaker · « **Reply #7 on:** February 22, 2022, 06:04:52 PM »

Good job.

Appalachian Hillbilly · « **Reply #8 on:** February 22, 2022, 09:11:52 PM »

Do you guys start your limb taper after the fades or before? Shot it quite a bit today and it shoots very well. I strung up all my longbows and compared the limb vertical stability at brace height. This bow at 8" is the least stable but not by much.

I did back out the limb bolts to see what effect the angle change had. When they were out as far as it would allow without binding, the stability increased and was the same as the others. That tells me it likes more angle. The flatter the limb when strung seems to amplify the oil can effect at lower brace heights.

Going to move the stop pin to get a longer straight section and start the limb taper slightly past the fades as compared to before, as I have now. This will stiffen up the center of the limb.

Not ready to make a new form yet. Just trying to lear cause and effect!

Any thoughts?

Crooked Stic · « **Reply #9 on:** February 23, 2022, 08:45:59 PM »

Like I said move your butt back first. This will move your string groove also. You will gain stability. Floppy limbs don't mean the bow will shoot bad. Less brace gives more string tension. If you want stability got to reach a happy medium.

OldRawhide42 · « **Reply #10 on:** February 24, 2022, 09:27:38 AM »

I have been chasing vertical stability for a long time. Keep a lot of notes. Every little change you make will change a lot of the way acts.

Crooked Stic · « **Reply #11 on:** February 24, 2022, 04:47:57 PM »

Okay I have a pic. The set on the right are floppy meaning when strung you grab the string and move it top to bottom and the limb tips will flip flop all the reflex out. the bottom set will not move. Both sets are.004 FT. The stable set maybe could get by with less straight but they feel really good after the shot.
Now I have a buddy built a WTT bow with floppy limbs that shot 190 fps. So I guess if you can stand the floppy its okay. Most times floppy comes with bad manners also.

.

Appalachian Hillbilly · « **Reply #12 on:** February 24, 2022, 08:45:55 PM »

I went to the shop today and thanks to Kenny M and my new lam sleds, ground some more cores. While I was there, I reworked my tips slightly and did some finish work on my limbs.

Shot them a bunch and they shoot well. Good enough that I might compete with them Saturday.

At 8" brace, I can not make them flip by just pushing on the tips in line with the strings.

I wonder if tip wedges would help as well.

I prepped my form and got another 1 " of straight at the butt end.

Here is the strung profile. Last 2 pics are pushing down on one end and you can see what opposite ends look like when doing this.

Crooked Stic · « **Reply #13 on:** February 24, 2022, 09:01:18 PM »

Let us know how the 1 inch helps. Dont think aa tip wedge would do a lot.

Appalachian Hillbilly · « **Reply #14 on:** February 24, 2022, 09:41:13 PM »

Will do! Going to do 1 thing at a time. I can get maybe 2" more total, then it gets close to the end of the form.

OldRawhide42 · « **Reply #15 on:** February 26, 2022, 09:32:51 AM »

The best set I have made so far are.
10" of a flat at the bottom
12" wedge
001 taper with a KM superlam
26" long
4" of reflex

There is still a little movement with the shake test.

Crooked Stic how much reflex are you using ???

Crooked Stic · « **Reply #16 on:** February 26, 2022, 11:52:02 AM »

I have not really measured my reflex.
Where are you measuring from? I think you want it to start about mid limb. And I think Centaur has a good profile.

OldRawhide42 · « **Reply #17 on:** February 26, 2022, 12:11:21 PM »

I measure from the table to the string Grove.

I might need a little more of a flat to start with.

Crooked Stic · « **Reply #18 on:** February 26, 2022, 02:06:41 PM »

That limb in the pic ought to be pretty solid.
I may go out and measure mine.

OldRawhide42 · « **Reply #19 on:** February 26, 2022, 03:48:16 PM »

I can move the tips up and down about 1/2" .
I may be getting to fussy about it.

Do you think light pounds makes any difference ? Thay are only 35.

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Author Topic: My first limbs! IlF (Read 2160 times)

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