Can you swing a shorter driver faster?

For our fastest tester – Player 1 – the difference between 45″ and 46″ was negligible, only 0.1 MPH. … Player 2 had the biggest gain, raising his swing speed 3.4 MPH by switching from 44″ to 46″. Players 4 and 5 were actually faster – by 0.3 and 0.7 MPH, respectively – with the 45″ shaft compared to the 46″.