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Tech Tip 1 PDF Print E-mail

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LOFTY IDEALS

One of the biggest misconceptions in drivers is the theory that goes something like this…”The lower the loft of my driver is the longer I will hit the ball. Only old men and girls use a driver with a loft of more than 10°.” Well this theory sounds logical but in most cases it just isn’t true. Most golfers are leaving 10-12 yards per drive to their egos because they just will not give up those 8, 9, 10 or even 11 degree drivers and start using more loft. When looking at driver loft we need to be looking at backspin, loft, swing speed and a little known factor in your swing called the Angle of Attack into the ball. This is the term used to describe whether you hit the ball on a downward blow, level to the ground or on the upswing. We’ve all had the experience of trying to spray someone with garden hose as they run away from us. You need to aim that hose at a 45° angle with the most water pressure you can find. Much lower or higher than that just will not get that water very far. Well that’s Launch Angle and how far the ball goes when you drive it will depend a lot on launch angle. Launch angle is determined by clubhead loft, swing angle of attack and then by the speed the ball is going when it leaves the club face. The more the downward angle of attack and the slower your swing speed, the higher the loft must be to maximize your drive distance. I recently heard Tom Stites speak. Tom is with Nike Golf and the man who works with Tiger Woods on equipment. Tom said the following… “Most people do not launch the ball high enough”. And Nike probably doesn’t make a driver with the loft many golfers need. So let’s say you have a swing speed of 90 mph and your angle of attack is +2.5° (in other words 2.5° upward), with a 9° driver you’d have 10.5° launch angle and the ball would go 206 yards, with an 11° driver you launch angle would be 12.1° and the ball would be out there 5 more yards at 211. God forbid if you used 13° driver you’d launch it at 13.7° angle and add another 2 yards to your distance. These figures assume you hit it dead center square to the target. The more loft gives you backspin which gives an aerodynamic lift to ball and sends it out there further. Now I’m not a scratch golfer by any means and I’m now using a 14° driver with an “A” flex shaft to the get maximum distance in me (which isn’t much). If I could add about 35-40 mph to my swingspeed and hit on a upward angle of attack I could use that 9° driver that XYZ Golf says will hit that ball farther than I can see.

Launch Monitor research shows that the average of all golfers’ swings with the driver at somewhere between 80 to 93 mph or less and with a slight angle of attack, regardless of gender, need at least 13° on the driver to maximize their distance.

I am now using Zelocity's Pure Launch launch monitor and am able to determine optimal launch angle. With a few calculations and a control driver your Angle of Attack can be determined.

I hope this hasn't totally confused you, I’ve just scratched the surface of the subject. If want to delve into this more go to Tom Wishon Golf Technology’s web site www.twgolftech.com or pick up a copy of Tom’s book THE SEARCH FOR THE PERFECT GOLF CLUB, available at Eagle Custom Golf, Amazon.com & many fine bookstores.

 
 
 
 
Tech Tip 2 PDF Print E-mail
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It's Your Lie!

Stick to it if you want, but you don't have to!

The lie angle of a clubhead is an important characteristic that can either help or hurt your accuracy, especially in the shorter irons. If the lie angle is incorrect for your size, setup, and swing you will most likely hit the ball off target, more so as the loft increases.

What is lie angle? It's the angle between the center line of the hosel and an imaginary line running along the bottom of the club. (See drawing)

lie_2

"Off the rack" clubs have a generally accepted standard lie angle that is considered by the golf industry as normal for most golfers. Whether this standard is right for you is something you need to discover for yourself since accuracy with the irons, especially the short irons, is so important to scoring.

So here's the run down. When the clubhead meets the ball, the sole of the club needs to be parallel to the ground. If it is and you have hit the ball square to the target, it will go straight every time. But if the toe of the club is pointing up so that the sole meets the ground toward the heel you will tend to hit that ball to the left. This club is too upright for your swing. If the sole contacts the ground toward the toe then this club is too flat for you swing (see drawing).

lie2.jpg 

There is a lot of physics involved in this that we won't get into, but rest assured that this is the truth about the lie.

EAGLE CUSTOM GOLF can perform a simple dynamic lie angle check to see if the angle of your clubs is proper for your swing. If it's not we can bend them to the proper angle with a machine used to adjust lie angles, as well as loft. This doesn't take long and runs about $5 per club. All clubs should be checked as you may swing each one a little differently. This will assure you that each club has the proper lie angle for you. I recently checked 6 clubs for a client (5 thru PW) and four needed to be bent 2 degrees upright while the other two need to be bent 2 degrees down, so checking all clubs needs to be done to assure accuracy.

Give us a call to have your lie checked and adjusted if necessary (540-246-5311)

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