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Thanks. Not sure how it only registers bat speed at contact when hitting a ball off tee.
Seems like you could do a lot of experimental comparisons:
- Hitting ball off tee vs. only swinging bat
- Hitting ball in different locations - inside/outside, high/low
- Swinging different length and/or weight bats
You can do different tests, some are pretty interesting. The difference between down the middle vs out side swing speed was an eye opener for me.
Ball at contact vs swing with no tee the difference was pretty close, as it measures the speed of the swing its self and no inherent on contact.
Swing with a whip hit vs a bat at contact.......... The whip hit by its self added 7 to 10 mph on the swing. Another eye opener. Which also plays in your question about bat sizes which can be used to find the appropriate max weight someone should swing. That dosent de crease bat speed.
The difference beteen and end loaded bat and a balanced version. Normally balanced wins on the speed but the end load has a ton higher BEV.
You can use a radar gun and the SPR at the same time to come up with some pretty cool numbers on swing speed and bev and how they relate