Amateur Barbarian
New member
Sid is correct. We are limited by the capabilities of excel, which is limited by the capability of the math.Part of the detail is missing in the smoothenss graphs posted by AB. the reasons are well known to both of us, and anyone doing some maths.
Excel uses a Polynomial line to indicate the trend in smoothness, and the more you actuall see them, everyone of them shows the same double dip, and that double dip is even more pronounced in short limbs.
We have been looking into this trait, over the last year.
If you look at the dots on the graph rather than the line, especially that flight bow limb graph that was posted a little while ago, you might see that the limbs have a two stage smoothness.
This is something we tried to play with on the hex6 and we think we have done so.
Look at the data points, the lines are a best representation based upon the capability of the software. You will generally see unusual behavior at the boundaries since you cannot weight the points in excel (i.e. place more emphasis for the fit on the end points). Depending upon whether you choose an even or odd polynomial, your data will either grow exponentially at the end, or loop down. I choose the polynomial that provides the the best line without an unusual behavior from high order terms I do this to help make the data more understandable. The basic profiles of the curves are very repeatable. I have tested many limbs and the shapes come out the same, the differences are in the details.