Stack Discussion ?

[Forwardhandle]

Well when I narrow a bow its a slow processe for me I usally scribe pencil marks on each limb and re string and test each pass but its been my exsperience that you have to lose a lot of width to change the tiller of a bow if Im at my target weight or near I just narrow tell weight starts to drop & I do the same processe for the tips but watch carefully for string angle changes a lot has been written about light tips but it's a fine line and the gains can be minimal compared to side tillering the bow in my exsperience , Granted a lot of what I learned was from natural material bows but a bow is a bow and the same principals apply , The tips always make me stop and think because you can lose all that you gained on minor changes especially on ridgid tips I could spend a whole thread on the topic its interesting to me !

[Buemaker]

I have been looking a bit more on the asc design and the back on their bowlimb is convex. Forwardhandle, I see that you will do it the other way around, with a concave back. I think OL Adcock must have done a lot of testing to come up with this design. I have never made such a bowlimb, but I wonder if the sideways stability will be harder to achieve with a concave back? I just wonder.

[Forwardhandle]

I'm sure ol Adcock did extensive testing I think with the convex back he was trying to componsate for poison efect in the bow to and I read he had problems with limb edges splitting it could have been the material quality of the times , but my thinking with the minor concave that I end with after narrowing ,poison effect is moot with glass or glass/carbon at least that's how it's working out on my current shooter with the limbs at 1 1/4 " I'm basing this design loosely on composite horn bow limbs where they have convex shaped belles & Im putting a double chamfer on both back & belly lightening the outer edges for mass reduction I have found my current bow to be exstreamly stabil , I'm not basing the design ACS or Adocks design just used it for a analogy of a curved limb , I'm guessing the concave back is putting more tension stresses on the the outer back edges and more compression stresses on the center of the belly but so far the design is working out , maybe the bow will blow up after 1000 arrows I don't know just exspermenting ! Sorry for the winded post just trying to explain the difference !

[Crooked Stic]

One of the guys at Dryad is using the ACS in his recurve limbs. He used to work with A&H kind of a spin off of Adcock. I have questioned him about different things and seems to want to help. Pretty sure he could answer any questions on the curved design.