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Originally Posted by DG
It appears from the article that the testing was done with a pitch speed of 70mph and bat speed of 66 mph. Don't know about the bat speed estimate but many HS and college pitchers are throwing fastballs at greater than 70 mph and the difference could be signficant. Having worked spring HS and college games with aluminum and college summer leagues with wood, I can say from observation that there is signficant difference. BESR does not produce an aluminum bat that approximates wood, it just sets an upper limit standard for aluminum, that may come close as long as pitchers will throw 70 mph or less.
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That is wrong, at all speeds the exit speed of a BESR non wood bat would be the same as a wood bat. The non wood bat may have a larger area that will produce maximum exit velocity, but it will not be faster than a wood bat with an equal BESR.
V(ball exit) = Vbat( BESR + .5 ) + Vball( BESR -.5)