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Welcome to Issue #31
There’s More Than One Way to Keep a Reel Sharp
Spend enough time around golf course equipment managers or technicians and reel maintenance eventually becomes a conversation about philosophy as much as procedure. Everyone wants the same basic result: a sharp, properly functioning cutting unit producing the quality of cut the operation expects. How different shops get there can be surprisingly different.
Spin grinding is probably the easiest place to start. The reel is rotated against a grinding wheel to restore the reel to a true cylindrical shape and produce a sharp cutting edge. For some shops, frequent spin grinding is the foundation of the entire reel-maintenance program. For others, it’s only part of the process.
Then there’s relief grinding.
Relief grinding removes material from the trailing side of each reel blade, leaving a relatively narrow land at the cutting edge. The intention is to reduce the amount of reel blade presented to the bed knife while maintaining the geometry designed into the reel. Major mower manufacturers have incorporated relief into reel designs, and modern grinders from Foley, SIP, Bernhard and Hunter offer ways to produce it.
Even so, plenty of successful shops primarily (or even exclusively) spin grind their reels. Others wouldn’t consider returning a reel to service without restoring the relief. Some relief grind periodically and use spin grinding for touch-ups between more complete sharpening procedures.
And we haven’t even gotten to backlapping.
Backlapping introduces another long-running discussion. Used properly, lapping compound can help restore the reel-to-bed knife cutting relationship without removing the cutting unit for grinding. Some operations backlap routinely. Others use it sparingly. Still others have largely eliminated it from their maintenance programs in favor of more frequent grinding.
What makes these discussions interesting is that they aren’t happening because one group cares about quality of cut and another doesn’t. Experienced equipment managers can reach very different maintenance practices while chasing essentially the same result.
How often should a reel be ground? When should relief be restored? Where does backlapping fit? How much should OEM geometry influence the process? And how much should labor availability, grinder capability, turf conditions and the expectations of an individual operation influence it?
Those questions deserve more than a few paragraphs.
We’re beginning to dig much deeper into cutting-unit maintenance for the TurfOps Technical Library, including spin grinding, relief grinding, backlapping, bed knife maintenance and the geometry connecting all of them.
There certainly isn’t one maintenance program that fits every golf course.
Understanding why shops make different choices is considerably more useful.
Stay tuned!
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News & Noteworthy
Kress KR238 Pushes Autonomous Mowing Further into Professional Turf
Kress is expanding its autonomous mowing lineup with the new KR238 MasterSeries, a machine aimed directly at larger-scale golf and sports turf applications.
The headline number is capacity. Kress rates the KR238 to maintain up to 20 acres within a 48-hour mowing cycle, with a 24.4-inch cutting width and cutting heights ranging down to 0.4 inches. Terrain-following, auto-leveling cutting decks are designed to maintain cut consistency across contours, while programmable striping allows patterns up to 20 feet wide.
Navigation combines Kress RTKⁿ positioning with V-SLAM, inertial data and odometry. The RTKⁿ system provides centimeter-level positioning without requiring an RTK antenna on the property, while the additional navigation systems allow the mower to continue operating when satellite reception is compromised by trees or other obstructions. Tri-camera vision, time-of-flight sensors and 360-degree ultrasonic sensing provide obstacle detection.
Really, the bigger story is where autonomous mowing continues to head. Earlier robotic systems mostly required operations to think in terms of smaller individual mowing zones. A machine capable of covering 20 acres every 48 hours begins to change that conversation. Fairways, larger sports complexes and other repeatable mowing assignments become increasingly realistic candidates for truly autonomous operation.
That doesn't make conventional mowing equipment obsolete. But it does add another increasingly capable option to the equipment and labor decisions turf managers are already making.
Learn more about the Kress KR238
LinkedIn post from: GreenSight
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In Case You Missed It
When Mother Nature Takes Over:
Managing turf, people and play through conditions no operation can control
Weather has always shaped turf maintenance, but this summer is showing how quickly it can begin dictating entire operations. Record heat, severe flooding and prolonged drought are affecting more than turf health. They're changing crew schedules, limiting equipment access, exposing infrastructure weaknesses and, in some cases, determining whether play can safely continue. From record flooding in Indiana to dangerously hard soccer pitches in England, When Mother Nature Takes Over looks at what weather extremes reveal about operational resilience, and why preparation increasingly means knowing not only how to respond, but when conditions have made the decision for you.
Read the full story: When Mother Nature Takes Over
Do you agree?
Are We Getting Worse at Fixing Ball Marks?
Golf’s growth has been great for the game, but our putting greens might be showing the strain.
Maybe it’s just me, but it sure seems like there are more unrepaired ball marks on golf greens than there used to be. It’s something the guys I golf with comment on regularly, too.
But are golfers actually getting worse at repairing them, or are there simply a lot more ball marks to repair?
We all know that golf has experienced tremendous growth since 2020, with record numbers of rounds and millions of new or returning players entering the game. More golfers mean more approach shots, more traffic and, naturally, more ball marks.
There could be an etiquette and education component as well. Golf has plenty of unwritten rules that many of us learned from whoever introduced us to the game. Repairing a ball mark, and knowing how to repair it correctly, is one of them.
I’m hesitant to call it an etiquette crisis. It could simply be more golfers, fuller tee sheets, inexperienced players, improper repairs and the mathematics of increased play all showing up in the same place.
Either way, maybe “fix yours and one more” deserves a comeback.
Worth a look: Golf Course Mechanic/Equipment Manager at the prestigious Inverness Club in Toledo, OH
Worth a listen/watch: The Business of Golf with David Hyland on BestBall
Worth a read: I Asked AI to Run a Golf Course, by John Kaminski, Professor of Turfgrass Science at Penn State
On the Workbench
A Few Things I’m Thinking About
A few subjects on the TurfOps workbench are starting to take shape.
One is the surprisingly broad career ecosystem within the turf industry. We tend to think of a relatively narrow set of traditional career paths, but equipment, technology, sales, manufacturing, research, data, irrigation, construction and emerging technologies are creating opportunities that extend well beyond them.
I’m also working on a much deeper look at relief grinding for the TurfOps Technical Library. This issue touches lightly on spin grinding, relief grinding and backlapping, but there’s considerably more to explore about the philosophies, research and technical reasoning behind each approach.
And then there’s electricity. As autonomous machines, electric equipment, handheld tools and charging systems continue finding their way into turf operations, I keep coming back to a basic question: How many facilities actually have the electrical infrastructure to support where the equipment industry appears to be headed?
Three very different subjects, but all connected to how turf operations continue to evolve.
Check it out…
