Is this graphic accurate? Diagram indicating CoG range for current drivers

[nevets88]

[Hardspoon]

It actually seems pretty reasonable.  Even this marketing graphic from TaylorMade, presumably designed to exaggerate the difference, shows a relatively minor change:

[saevel25]

That's pretty much correct.

I took the maximum upper, lower, forward and backward positions and put them on a Ping G30 outline.

It's very hard to move COG.

[Hardspoon]

That's pretty much correct.

I took the maximum upper, lower, forward and backward positions and put them on a Ping G30 outline.

It's very hard to move COG.

Very cool - where did you get the info/measurements from?  I was poking around on Ping's website and couldn't find the exact specs for CG location.

[saevel25]

Very cool - where did you get the info/measurements from?  I was poking around on Ping's website and couldn't find the exact specs for CG location.

[DrvFrShow]

Looks to me like Ping and Cobra really did a job of moving the CoG back with the G30 and the Fly-Z.

[WUTiger]

CoG is just one factor. I would also like to know the influence of the following:

• Delta, reverse-slope head design (a la Golf Geek picture) vs. a more rounded, pear-shape head like the Titleist 915D
• Whether clubhead had sole channel below face (increases flexing)
• What are launch dynamics of the shaft on driver
• Ball position and tee height at address

[saevel25]

CoG is just one factor. I would also like to know the influence of the following:

Delta, reverse-slope head design (a la Golf Geek picture) vs. a more rounded, pear-shape head like the Titleist 915D

Whether clubhead had sole channel below face (increases flexing)

What are launch dynamics of the shaft on driver

Ball position and tee height at address

That Golf Geek Picture has a rounded shape. It's that the colors blend together you really can't see it. Enlarge the picture a bit.

I am not sure if I am getting the concepts correct. From what I read you want more laminar flow because turbulent flow causes drag.

As you can see something like the Turbulators cause the flow to stay Laminar longer, which decreases drag.

As for the reverse curve doesn't do much for drag. Look at the w/o Turbulators. The airflow gets broken up right at the crown.  Really the most drag is in that area. If you reverse curve it I don't see this diminishing drag. I think this is why golf companies don't do it because it doesn't effect the drag that much.

If you introduce a reverse curve then you are increasing costs on metal working because you need to produce an S curve to meet the face to the crown.

- Channels in the bottom of the clubhead do work. They do spread the sweet spot more downward in terms of ball speed. I hit a few Taylormade clubs that had the channel and they launch really well on lower center hits. Honestly I don't think that it's enough to really make it a marketing point, especially for better players. Though better players tend to thin drives over pop up drives, so it should matter more :)

- Depends on the shaft. If I had to label the key components of the shaft. Stiffness, Flex Point, Weight. The shaft can change the launch angle so much, and how it reacts with the swing.

- Ball Forward = Less outward, maybe more inward path & Path moving less downward, maybe upward.