This is a great example of the benefits you get when you have a subscription contract with Javelin and SOLIDWORKS. A lot of people believe that service packs are just for fixing bugs in the software, but sometimes they also add new functionality to existing tools.
SOLIDWORKS 2013 SP 2.0 comes with a few of such enhancements. In this video I am demonstrating the new SOLIDWORKS Equal Curvature Relation which can be added between conics and splines.
Note: This relation works with all the conics sketch entities in SolidWorks: “Partial Ellipse, Parabola and Conic“