The Medicus driver is a golf swing training tool that has a dual breakaway hinge located just above the club head. The driver was designed by Medicus Golf to teach beginner, intermediate and expert golfers how to consistently swing on tempo and on plane. The result is longer tee shots and the alleviation of slicing. Deviating from a consistent tempo of the golf swing or breaking the angle of the swing plane with a Medicus driver results in the hinge breaking on the club, making contact with the ball impossible.
Stand at approach.
Bring your club back. This is the first make-or-break point in your swing that the Medicus driver will pick up. If you pull back with a jerk, or simply pull back from the ball too fast, the hinge will break and you'll have to start over. This is normally caused by using too much of the hands and arms at takeaway as opposed to using shoulder and hip rotation, keeping your hands and arms in.
Make sure that your shoulders turn at an incline as opposed to horizontally. This is part of swing plane philosophy that says you need to pull up, even as you pull back which causes the front shoulder to begin dropping, the back shoulder beginning to go up.
Pull back to the middle of your backswing. At this point, the club should be horizontal to the ground. If it snaps at this point that would indicate too much or too little turn on the wrists depending on which way it breaks. It could also indicate too shallow of a shoulder turn, resulting in the club falling off plane.
Bring the club up to the top of your backswing. The hinges can break for a three reasons up at the top of your swing. If your shaft angle becomes too horizontal (caused by overswinging), outside the swing plane or the club face is not square (too open or closed), the hinges will break.
Start your downswing. If the Medicus breaks upon starting your downswing, you are either allowing your wrists to break too early or your are overextending your arms from your body. It all boils down to losing either your wrist or arm angles on the way down. To alleviate this, make sure that the wrists stay cocked and your body rotation starts to bring you down to impact.
Bring your club down to impact in a smooth, fluid motion. If it breaks just before impact you are having a problem with weight transfer. The weight should be over the middle or the lead part of your body. If your weight is over the back foot, the hinges will give.
Follow through. Make sure that your maintain a square club face as you come out of impact. You can do this by rotating your body and allowing your wrists to rehinge halfway up your follow through. At finish, the shaft of the club should be completely vertical