one other thing to take into consideration is the stretch reflex that is
triggered in each chain. In an ideal serve, you can trigger this to serve
as a "booster rocket" to help accelerate and build speed in each link.
One of the reasons why at as you coil on your serve you don't want to
go to maximum range of motion (maximum coil). I think you almost
want a little room/leeway. That's my theory.
http://goo.gl/NPBIWt (How to serve like Sampras)
http://goo.gl/KZfDaJ (Star Wars superfan battle)