- Jun 8, 2016
- 16,118
- 113
So you are admitting to acting like a petulant child rather than being an idiot..tough choice (not sure which one I would have chosen tbh)
Which part of that Nathan paper (the paper, not the website) that I linked to used data from the Cross study (which did use a rubber ball and aluminum plate) ? Read the paper and get back to me.
In that paper Nathan states that the analysis for contact closer to the handle is more complex and not included in that paper. You and I both don’t know how close that has to be so for you to state that the grip matters for a majority of contact is not based on anything. I will admit that at some contact location it might matter (what “matters” entails is a different story and related to how the wave reflects back for the various end conditions in the below video eg fixed vs loose) My contention is that with the dampening effects of the connector with two piece bats I highly doubt the wave will propagate back to the contact point in time with enough amplitude such that the grip matters for any reasonable contact point. That is however, just a theory and I could be wrong. For one piece composite bats there is a better chance the grip might matter for off barrel contact but I have no idea where that contact point is…and neither do you unless you have data or a theory which you would like to share.
I have already stated that grip matters in terms of generating bat speed. I have swung a bat before believe it or not..
To answer @Rolling Hard 's question, the only thing that matters here is how long the bat and ball are in contact and how fast the wave propagates from the contact point to the hands and back to the contact point. Changing the ball will change how long the ball is in contact with the bat and how large of an amplitude the wave have as it propagates. The wave amplitude has secondary (nonlinear) effects on the propagation speed.
If you want to discuss this intelligently I am game. If you just want to run your mouth then don’t bother responding.
For those of you actually interested in the physics of what we are talking about, here is a video of wave propagation and reflection. In the video the hand can be thought of as the ball contacting the bat and producing a wave and the hand holding the bat is the place in the demonstration where the wave is reflected back.
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