1 thing that many amateurs do is mistake the need for more loft while the issue isn't the loft but rather their driver swing which is totally different than an iron swing. If you're not swinging up at impact, the ball won't climb into the air. This was my issue. My driver is 10.5 degrees, which if swung properly is plenty of loft to get the ball flying higher as it should, but my swing was too flat causing mid height stingers. For higher drives, you must stay behind the ball & not overrotate your hips & shoulders which will flatten your swing & cause low drives. We've all been told to tilt our rear shoulders down at set up which is correct, but if you don't keep that tilt through impact, you won't swing up as is required for a higher launch. Stay behind the ball & don't let your hips & shoulders rotate on a flat plane & you will be swinging up. As with most things, do this with a half swing until you get the ball airborne consistently, then you can lengthen the swing but don't try to kill the ball. This is only meant to develop the feeling of swinging up so swing slowly & smoothly.

On average the R-flex produced a much higher launch angle with a little bit more spin. This ultimately led to 11 more yards of carry and 7 more yards of total distance. The extra launch and spin helped boost carry distance, even though the average ball speed was down 1 mph. The steeper landing angle led to slightly less roll-out, but the net gain was still significant. In addition to the gain in distance, the player’s dispersion area shrunk significantly.

Another informative test I use an 11degree driver and it,s my fairway finder .I think correct loft with the correct shaft flex,kick point and weight is the magic recipe ,not just loft alone .I use a miayazki c Kua 43gram R flex shaft for my driver and my fairway woods 2011 model shaft but that's what works best for me . Thanks again for your video,s

I think this explains why when I hit my M1 at the 14 loft I have a lot more control and consistently straighter shots as opposed to my previous Fade/Slice problem. I am powerful enough to stay close with the big hitters, but usually 15-20 yards behind them, but hey at least I am in the fairway now.

Great job Jackie, excellent test. Can we get more test like this with higher swing speed? 110 to 120 mph?

That was excellent. I now will have to play with the loft and record the difference.

Awesome video! I have been messing with loft on my driver myself and it’s super interesting!

Good video with testing of a single variable only. Thumbs 👍

I have a 9 degree. I will start with a 10.5 now. I am aging....Another reason is I used rental clubs when I played in Harrisburg. The loft was 10.5 on my driver. I hit it well all day. I felt more in control of the golf ball than with my own 9 degree. Losing a little distance but gaining control/accuracy is more important to me.

Surely an appropriate test would be to change up or down the swing speed at the two extremes @ 14 and 7 degrees ? I have a driver swing speed of roughly 70 mph, anything less than a 14 degree loft for me is useless. My son swings at 110 mph, if he goes above 9 degree loft then there is snow on it when it comes down.

Ive a 9 sim 2 ,its on 9.5 maybe have to go back down ,winter i cant get up the course much ,changing to a better course this new season

I have a Cobra SZ set to 12 degrees with a Tensi AV 65 stiff. I’m 59 and my swing speed is only 83 mph. The fitter put me in the stiff because of my fast tempo. What’s your opinion? Thanks great video!

From what I see, there is barely any difference in the 10.5 and 9 degree drivers. It looks like she could play either, so it comes down to look and feel. She's happy with her current gamer, so stick with it. I had the same decision, but I went with the 9 degree. Our fairways are usually firm, so I get more roll out of the 9.

I have to play 10.5. Would love to be able to play 9 for a bit more ball speed but my spin is so low it just falls out of the sky at 9. I hit a cut most of the time off the tee even though my natural shot shape is a draw because it tends to bring my spin up above 2000.

What I want to see is which driver gets the best ball speed. It doesn’t matter the swing speed or loft. Say swing speed is 100 to make it simple. Is it coming off at 140 or 150? So that driver adds 40 or 50mph above what your swing speed is if you hit the middle. Does that make sense?

Interesting. I keep trying to adjust my 10.5 to 9 degrees figuring it'll produce much more yardage. However, it creates more sliced shots. Perhaps I should try 12 degrees since it may not be a huge decrease in distance.

How much distance does Jackie gain when she hits the Stealth + ???

What about at 110 club speed category?

Jackie should play the 10.5°, set 1° up to close the face a bit for her, and add a little more carry/spin

Would you recommend lower loft for high spin due to negative AOA?

I play with a 9* and love it. Wish I could use it more, but I need more subscribers to retire

What’s his accent

I didn’t know Mayim Bialik played golf.