Sunday, December 20, 2009

Trackman Report Analysis 1.0


Got some Trackman numbers from over at Brian Manzella's site.So, let's take a look and analyze them. This is with a 6-iron.
CLUB:
Club Speed 82.0
Attack Angle -3.9
Club Path -2.2
Vert Swing Plane 57.4
Horiz Swing Plane -4.7
Dyn Loft 22.4
Face Angle 3.4

LAUNCH:
Ball Speed 111.8
Smash Factor 1.36
Vert Angle 17.0
Horiz Angle 2.2
Spin: 6217 (!)
Spin Axis 3.6

LANDING:
Max Ht. 24.1 yds
Carry 149.5yds
Side 4.2yds
Flight time 5.18sec
Landing Angle 44.5deg

TOTAL:
Length 159.0yds
Side 3.7yds
First, let's break down the the club dimensions. I have put the Tour average in parenthesis:
CLUB:
Club Speed 82.0 (92 mph)
Attack Angle -3.9 (-3.5*)
Club Path -2.2
Vert Swing Plane 57.4
Horiz Swing Plane -4.7
Dyn Loft 22.4
Face Angle 3.4
This isn't the most powerful swing as shown by the 82 mph clubhead speed. That's still okay, but I actually think this golfer could greatly increase their clubhead speed with some tweaks to improve the geometry of their swing.

I like taking a look at the clubface first because I believe the game of golf is very much about who can control their clubface throughout their bag throughout the round.

This golfer's face angle is open by 3.4*. To me this is too open of a clubface which may be due to a faulty grip. Jeff Evans 'Strong Single Action' grip video may help this golfer get the face more square at impact.



Still, a golfer can have a club open by 3.4* and still hit very good shots, but they will have to swing quite a bit out to the right in order to have a path that is more inside-to-out than 3.4* so they can hit that draw that comes back to the target.

This golfer has a solid attack angle with a 6-iron at -3.9*. It's very tough to 'flip' with that steep of an attack angle, so w/o seeing the golfer's swing I think it's safe to say that flipping is not an issue.

In order to 'zero out' his path, he would need to 'swing left' by about -2*. But, since this golfer has such an open clubface, he actually doesn't want to 'zero out' his club path and actually wants to get that true path going out to the right by more than 3.4*.

In fact, with that clubface and that attack angle, he needs to swing about +2* so he can hit a draw back to the target.

Instead, the golfer's Horizontal Swing Plane is at -4.7*. This results in a 'true club path' of -2.2*.

So neither the open face (+3.4*) or the outside-to-in path (-2.2*) are bad by themselves. However, they don't work well in conjunction with each other.

When you have an open face and an inside-to-out path, that's going to result in a slice.

While the grip may be an issue, I think the golfer is losing lag pressure early on in the downswing which results in an over the top move with results in steering the clubface open.

I think if the golfer can get rid of this over the top move they will greatly improve their ballstriking but will really notice added power and get much more than 82 mph of clubhead speed.
LAUNCH:
Ball Speed 111.8
Smash Factor 1.36
Vert Angle 17.0
Horiz Angle 2.2
Spin: 6217 (!)
Spin Axis 3.6
The smash factor is decent, so the golfer probably hit the ball solid. I think with a more square face and less of an OTT move the golfer will increase the smash factor more towards 1.40.

The spin rate is fine. The average spin rate with a 5-iron on the Tour is 6,000 rpms. This golfer is hitting a 6-iron, so being at 6,217 is pretty much on par with the Tour average.

But, to show that the golfer has slice spin on the ball, take a look at the Horizontal Angle and the Spin Axis. A 2.2* horizontal angle means that the ball left the clubface going 2.2* to the right of the target. The 3.6* spin axis means that the ball was spinning to the right (slice spin) by 3.6*.

Remember, for every 1* of spin axis, that sends the ball off-line by about 0.7%.

So the formula to determine how far off line is:
Off Line Shot = Carry * (Spin Axis * 0.7%)
In this case the carry was 149.5 yards. So the formula for this particular golfer is:

149.5 carry * (3.6 * 0.7%) = 3.76 yards.

These Trackman stats were the average of a bunch of shots by the golfer. His 'side yards' was 4.2 yards to the right, so we were not that far off (wind also plays a factor).

If any readers have Trackman reports, please send them to me at Richie3Jack@yahoo.com and I will analyze them on this blog.






3JACK

2 comments:

flyers66 said...

Help, a little confused...
In this Paragraph
"So neither the open face (+3.4*) or the outside-to-in path (-2.2*) are bad by themselves. However, they don't work well in conjunction with each other.
When you have an open face and an inside-to-out path, that's going to result in a slice.

Don't you mean to say in the second sentence that- When you have an open face and an OUTSIDE-to-IN path, that's going to result in a slice...?
thnks

flyers66 said...

Help, a little confused...
In this Paragraph
"So neither the open face (+3.4*) or the outside-to-in path (-2.2*) are bad by themselves. However, they don't work well in conjunction with each other.
When you have an open face and an inside-to-out path, that's going to result in a slice.

Don't you mean to say in the second sentence that- When you have an open face and an OUTSIDE-to-IN path, that's going to result in a slice...?
thnks