In high school and college Bryson DeChambeau experimented with using constant length irons. The theory was if you have the same length shaft on every iron, your swing stays the same and results in better repeatability. It makes sense, but developing fixed length irons requires the clubhead swingweight to be adjusted as you change the shaft length. When Bryson won the U.S. Amateur and was ready to turn pro, he was courted by numerous golf club manufacturing companies. Unlike with other professionals, the company would have to design fixed length irons for his use. Bryson signed an endorsement deal with Cobra and the rest is history.
The picture above shows the fixed length concept. The Cobra King F7 Fixed Length iron set is a constant 7 iron length for gap wedge through 5 iron. You can also purchase 56 and 60 degree wedges in the same length.
Unfortunately, Bryson has struggled with his golf game this year, primarily due to putting, and has not received much publicity. I fully expect his victory to renew the golf community discussion about fixed length irons and we will see amateurs putting these clubs in their bags.
I tend to be more of a traditionalist and don’t change golf clubs often but I believe this concept will result in a more repeatable golf swing. I actually would be open to trying a set except for the one problem of distance between irons. Because the 5 iron will have a shorter shaft than a traditional 5 iron, the distance will be shorter. Then, because the wedge has a longer shaft, you will hit the wedge a longer distance. This will shrink your overall distance from wedge to 5 iron. That will leave you bigger distance gaps below your wedge distance and greater than your 5 iron distance. I have no doubt you can improve your iron play consistency using fixed length clubs but I’m not sure the improvement will offset the reduced distance range of your set.
In an industry where yearly changes in technology are small and almost undetectable, this concept is truly a big change that is exciting to see and experiment with. I will be looking for golf buddies who have a set or have tried these irons to see their opinion. If anyone has seen or hit these clubs, I would love to hear your opinion and critique.