Longer driver shaft pushes path right, attack up
A fitter points out that lengthening the driver shaft tends to push the club path more to the right and move the attack angle up. He frames these as swing dynamics golfers should be aware of are going on when they go to a longer build, not just a speed change.
Channel: Club Champion
Watch official source at 8:13Why this context matters
Said during a driver shaft fitting test comparing a shorter/standard build against a longer, lighter one.