Here is the original video (HD) from when I was practicing raising my toss arm. As you can clearly see, the above is moderately gentle and there's more in the tank, also demonstrated by the fact the ball starts dropping into a standard 21" fence.
Out of curiosity I decided to check the speed serve calculator, because the serve felt good and it was right in the corner of the box .. almost! Magnified stills to come soon. I would like opinions using the speed calculator, for those willing to take the time. If you want to be more accurate and like risks, here is the full HD version:
I will post my results shortly, along with all stills featuring frame numbers and ball court contact positioning. I don't personally think it's as fast as the #'s I'm getting, hence my question.
Edit: I currently have a meniscus knee injury so really big leg drive is out for a while I'm afraid.