I'm also a club builder and I argue this point with my fitters all the time: the setting does not change loft AND face angle; the setting changes loft OR face angle (depending on how the user holds/delivers the club). For example, Taylormade's chart says that in the "LOWER" setting, the loft is -2 degrees AND the face is 4 degrees open. According to Assumption No. 2, the golfer is pointing the face at the target. If the face is pointed at the target, then how can it be open? I use the same Golf Instruments M-310 gauge and I've measured pretty much every settings from every OEM. The loft is always accurate to what the vendor says it does...WHEN THE FACE IS SQUARE. However, if I take the Taylormade LOWER setting and open the face 4 degrees, then the loft reads standard loft again. That's why some people argue that you're just changing face angle (and not loft). I say you're doing one or the other, depending on the golfer.

The best video on loft and lie with adjustable drivers ever. Thanks!

I've had customers argue that lowering the loft closed the face and increasing the loft opened the face. The clip where you showed the club falling closed when you increase the loft and falling open when you decreased the loft is a great example I can show my customers. Thank you!

Have spent ages looking for an explanation of how an adjustable driver works but now I've found it - a superb video explaining in simple terms the impact of changing the settings on the hosel. The use of a clock face to illustrate the relationship between the club head and the shaft was particularly good. Thanks and best wishes

It’s straight up criminal how under appreciated your channel is. I’ve never seen a collection of better videos for at home club builders to learn from. Please continue to make content and grow the channel. You’re videos are very much appreciated by us that like to tinker on our gear at home. I taught myself a couple years ago to start doing my own club work and never looked back. Would have been a huge help to have had your channel as a resource. Keep up the great work.

Brilliant .

This guy definitely has a high degree in some areas of science. He knows exactly how to properly preface an explanation

Mind Blown! Well done!

That video needed to be made. Thanks!!!

I am pretty sure the center of gravity changes position when you change loft. More loft means center of gravity more down because you are moving the whole head. It has been my experience that when I set drivers or woods to maximum loft I get excessive spin and height, more than normal for that new loft.

The revelation for me was the last part about the relationship between the contact and balance points and the 2nd assumption. Thanks for putting all the pieces together. 👍

The best video on KZfaq regarding this topic.

One of the best explanations of the adjustable sleeve. I come from an era of flat sole woods with different bore angles. The rounded soles of drivers make this possible. Slightly less applicable to fairway woods and hybrids that don't have much camber. Tom Wishon was one of the most outspoken in this topic.

Finally a video explaining this clearly. I never understood how changing the loft would change the face angle if you square the club face to the target. It doesn’t.

This guy is being super slept on. He has a lot of knowledge and his explanation is through and very well presented.

Got to say that is the best description on KZfaq…well done. The visual of the clock face really help me grasp what the adjustments were doing!!! I stopped the video and immediately liked and subscribed

I looooove when KZfaqrs are able to break things down into such a simple description. Made understanding adjustments on my driver so much easier! Ive been nervous to try it out

Very helpful. Makes so much more sense. I appreciate the assumptions of 1 and 2. This helps define the basis of all other alignments.

Very thorough and insightful. Thank you for making the complicated understanding with clarity. Awesome channel!

Great explanation! Very helpful and probably should be referenced by every company making this type of club.