The biomechanics of a hammer throw is probably the last thing that comes to mind when you are practicing Tai Chi.
However, you should not dismiss it because knowing it can help your pulling technique. Just last week I mentioned about the hammer throw to two students for learning the same technique.
Today I found a video that is relevant to what I mentioned :-
The part of the video that is an illustration to what I talked about is at 2:32. You don’t need to know the mathematics to be able to benefit from this video. All you need to do is to extract that part of the body movement that is the key to improving your performance.