Groovy Wedge Design

Why did we design StingRay and StingRay TT grooves?  How do they work? And, What will they do for you?

By now, no doubt you have seen the amazing spin performance of Indi StingRay and StingRay TT.  And, you may be wondering how we engineered both wedges to generate such impressive backspin and launch control.

Much of the performance comes from the size and shape of the face grooves. TractionFace technology combines our unique approach to placing grooves on the clubface to maximize backspin without destroying the ball when it is struck.

Here’s a peek behind the curtain:

In our original desire to enable greater enjoyment of golf, we wanted to bring the same focus on performance to wedges that the big guys have to drivers.  We were – and continue to be – inspired by the idea that we might be able to bring the joy of watching a ball spin back on the green to everyone, not just the most accomplished and experienced wedge players on tour.  We figured that if we can achieve this goal, then we can get more golfers addicted to the game.

(More than a few of our friends and former colleagues thought we were crazy to try, and they said we would spend years fruitlessly endeavoring in vain.  How can a couple individual engineers build something that outperforms the big budgets and big engineering teams of the big guys? Yep.)

Agreed, it is an audacious goal.  But, then we spent countless hours in the lab, behind a CAD terminal, in the prototyping shop, and at the practice range until we saw confirmation of our initial hunch: you can drastically increase backspin with the right groove design.  After looking at all kinds of data from high speed cameras, IR sensors, Doppler radar, lidar, and accelerometers, we identified the important design parameters that allow face grooves to increase traction on the ball.

The secret?  Well, we are not going to spill everything, but we’ll share some details.  Maybe you can connect the dots… Groove spacing is critical on the face to capture more of the ball at contact, shaping them to grip the cover well without shredding it.

In truth, we are not the first company to use deep, square grooves.  You may recall favorite wedges from yesteryear that employed the classic box groove shape, but we have taken modern design, engineering, and testing techniques to optimize the approach.  Looking closely you will notice we have created a proprietary groove shape, one that is neither the old box-shape, nor the contemporary v-shape. Our proprietary design has steep walls to add grip, with a tapering slope and upper radius that is friendly to golf balls.  The end result is TractionFace, and our assurance that you can surpass 104 RPM of backspin on full swings just like tour pros.

Massively increased backspin isn’t the only benefit to better traction between the ball and clubface.  As we explained in this blog post “Why Spin Matters”, increased traction also transfers more forward swing momentum leading to lower launch angles for better accuracy and control.  This is huge in landing closer to the hole and lowering your score.