I wonder if anyone has kept track of all bats used verses all HR's hit in recent seasons. Hummm.... there must be some statistician weenie/weenette out there who had done it.
http://www.thepostgame.com/blog/dish/20 ... t-problems.
Just an FYI...

fasterpitch92701 wrote:I wonder if anyone has kept track of all bats used verses all HR's hit in recent seasons. Hummm.... there must be some statistician weenie/weenette out there who had done it.
http://www.thepostgame.com/blog/dish/20 ... t-problems.
Just an FYI...
DunninLA wrote:It already has. College softball this year used a compression test on every bat used in the post season. HRs in the WCWS were down about 40%.
As to College Baseball, I cannot find the WEENIE post I made originally at UCS, but the change from composite to aluminum between the 2009 and 2010 seasons resulted in 3% fewer HRs... a surprisingly small difference compared to what I expected to see. It is clear that an aluminum bat CAN BE, and clearly WAS, just as hot as composite. The issue isn't one of materials, it is an issue of engineering. Speaking in terms of Softball standards, you can engineer an aluminum bat to have an exit speed of 102 mph just as easily as a composite. The issue is that engineers have to engineer to 98mph no matter what material they use.
I have not taken the time to look at 2011 season vs. 2010 or 2009. However, a quick Google search brought up http://www.kettering.edu/physics/drusse ... stats.html which seems to indicate that 2011 dropped about 40% vs. 2010.; Pay particular attention to the May, 2011 updates to this previously published paper, and to the Home Runs Per Game chart in the middle of the paper. I'll bet somebody started doing exit-speed testing and put the cabash on the hot aluminum used in 2010... that was just about as hot as the composites used in 2009.
I wouldn't want to be the collegiate baseball player who as a freshman in 2009 grooved a HR fly ball swing that was rewarded with balls sailing 20' over the fence, where now those same balls are being hit just to the edge of the warning track... DEATH = WARNING TRACK POWER.