Posts Tagged ‘Titleist Vokey SM4’
We should all be looking to spin the ball around the greens. Which of the current crop of wedges will give us the best chance to do that? If you have read any of my previous research on wedges you will know that friction between the face and the ball plays a huge role, not only in generating spin, but also in lowering trajectory – both vitally important for control.
The most important part of the clubface of any wedge is not the grooves, but the texturing of the flat areas between the grooves. Keep in mind that the primary purpose of grooves is to channel “matter” away from being caught between the flat areas and the ball – they are not in place to create spin. When you look carefully at the flat areas between the grooves of your wedge you should see some fine milling which looks like corduroy to me. Most club manufacturers will mill the clubface of their premium wedges and it makes a massive difference to the control and ball flight.
The idea behind the test was to see which wedge generated the better grip between face and ball. I had four very new 58 degree wedges available for the test:
- Titleist Vokey SM4 with a DG Spinner shaft – conforming grooves with standard mill pattern on face
- Ping Gorge Tour with a DG Spinner shaft – conforming “gorge” grooves with standard mill pattern on face
- Callaway X Series Jaws CC with a stock steel shaft – additional conforming grooves with no apparent milling on face
- TaylorMade ATV with a KBS shaft – conforming grooves with two-way mill pattern on face
You may notice that the wedges had differing shafts – I obviously would have preferred to have had all the clubs built to the exact same specs, but that was not feasible for this test. Apologies to all Cleveland Golf fans – would love to have had a Cleveland wedge in the mix, but did not have a new version. I had four golf professionals each hit four shots with each wedge. All shots were hit off a mat in order to limit friction being interrupted by matter being caught between face and ball. Titleist ProV1 golf balls were used and each shot had to land somewhere between 40 and 60 yards (ideally at 50 yards). The clubface was cleaned often even though it never appeared to need it. The “normalize” feature on TrackMan was off.
Here are the results:
- ATV 7365 rpm average
- Vokey 7210 rpm average
- Gorge 7193 rpm average
- Jaws 7163 rpm average
As you can see the ATV wedge led the way in generating the highest spin of the four – albeit by a slender 2%. If I was a betting man I would have bet the ATV would generate the most spin as I have always loved the two-way milling treatment on the face. I would also have placed the Jaws wedge at the bottom of the pack, as no matter how many groove edges come in contact with the ball, there is way more flat surface area contacting the ball and it should be milled.
If you do take one thing from this research let it be the following: A fresh wedge with a clean, milled clubface will allow you to generate more spin and a lower trajectory – both important factors in controlling your golf ball around the greens.
Thanks to Zack, Mark, Rick and Joe for your help with this article!
I recently stumbled onto an interesting tidbit whilst working with a young professional on his wedge game. It was early in the morning and we had been hitting beautiful 50 yard pitches the afternoon before and suddenly he could not get the ball to launch low enough with the spin rate he had been generating the day before. Now as you may know I’ve tested almost all there is to test in regards to a 50 yard wedge shot and of course I had looked into the effect of water interfering with the friction between the face and the ball. One problem – I had tested a wet club striking a dry ball. My results from the earlier test showed very little difference in launch and spin when there was water involved and I had since adopted that belief.
As I watched the young pro struggle to lower his launch in the morning dew it came to me – there was a difference between a wet club striking a dry ball and a dry club striking a wet ball! I had to run the test again.
I had to be very careful with the test in that I needed to use the same club, my 54 degree sand wedge, in very controlled conditions, with golf balls that were consistent. I used brand new Titleist NXT Tour golf balls and made sure that I cleaned the grooves and clubface off between each shot. I attempted to hit each shot to carry 50 yards flat and hit eight shots for each portion of the test. I removed the two shots that had the lowest spin from each portion. With the help of my TrackMan here are the results:
Wet club and dry ball:
- Launch angle was 27.8 degrees
- Spin rate was 5463 rpm
- Height was 26.5 feet
Dry club and wet ball:
- Launch angle was 30.1 degrees
- Spin rate was 5291 rpm
- Height was 28.4 feet
Dry club and dry ball:
- Launch angle was 25.4 degrees
- Spin rate was 6603 rpm
- Height was 21.2 feet
The interesting thing in looking at the trajectory chart is how much lower the dry club and dry ball (purple) shots flew. Clearly there was more friction between the face and ball which led to a lower launch with substantially more spin. The dry club and wet ball (yellow) sample flew the highest as the water on the ball greatly decreased friction which led to higher launch, due to slippage and thus decreased spin – certainly not the optimal shot.
The interesting thing when comparing the wet club/dry ball versus the dry club/wet ball results was that the spin and launch were better when the BALL was dry. This was due to the water being forced off the clubhead and into the groove channels during the motion of the swing. Not to mention that the air dried the face during the swing too.
Moral of the story – always clean the clubface (unless it has sand on it) and dry the club and ball when possible. If you happen to have an early morning tee time and you’re a dew sweeper, don’t plan on hitting any low spinners! The drier the ball and club, the better the friction and the better the quality of shots you will hit.
Please read my first two articles on wedges and pitching: