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2140 Fair Oaks Boulevard, Suite 4, Sacramento CA Bench hours Tuesday through Saturday (916) 555-0184
Bunker Lab Golf Fitting bench and service desk · since 2011
Category work · driver

The Club Most Golfers Change First and Should Probably Change Third

A driver session is sixty minutes and it is the most fun hour we sell. It is also the one where we most often finish by telling somebody their existing head is fine and the money belongs in the scoring clubs. Both outcomes happen here regularly.

Before the head comes out of the bag

Three settings that are already wrong on about half the drivers we see

Adjustable hosels were sold as a convenience and have quietly become a maintenance liability. A sleeve gets loosened at a demo day, re-tightened by somebody guessing at torque, and eighteen months later the golfer is playing a loft they did not choose in a face angle they never asked for.

So the first ten minutes of a driver session are unglamorous. We read the actual loft and lie of the head as it sits, note the sleeve position, check the torque with a wrench that gets verified against a known value, and weigh the club. Roughly half the time something in that list is not what the golfer believed it was, and occasionally that alone is the session.

You cannot fit a driver whose current settings are unknown. You are just guessing against a moving target.

The hour itself

  1. Warm up and establish the control

    Your driver, your ball if you brought a sleeve of them, and enough swings that the pattern settles. We discard the opening set rather than averaging them in, because nobody's first eight tee shots represent their golf.

  2. Loft and face position

    The cheapest lever in the bag. Before any component gets discussed we run the sleeve through its useful positions, because a golfer who gains two hundred rpm of spin reduction from a setting change has just saved themselves several hundred dollars.

  3. Shaft, changed alone

    Weight first, then profile, always against your control head so the head is not silently helping. One change at a time is slower and it is the only way to know which change did anything.

  4. Head, if the shaft work suggests it

    Different centre of gravity locations, different face curvature behaviour on your particular miss. This is last on purpose. It is also the most expensive line item and it earns its place least often.

  5. The read

    Numbers on the screen, dispersion included, with the changes that did nothing shown alongside the ones that worked.

What we are actually watching

Rough working windows we aim at, adjusted to the individual golfer
Delivery speedLaunch we look forSpin windowUsual limiting factor
Under 85 mph14 to 17 degrees2600 to 3200 rpmNot enough height to carry, almost never too much spin
85 to 95 mph13 to 16 degrees2400 to 2900 rpmStrike location scatter across the face
95 to 105 mph11 to 14 degrees2100 to 2600 rpmSpin from a steep or closing delivery
Over 105 mph9 to 13 degrees1900 to 2400 rpmDispersion, not distance

Treat those as the middle of a conversation rather than targets. A golfer who delivers the head from well inside with a closing face needs different numbers to one who comes across it, and the row that matches your speed may be the wrong advice for your pattern. We will say so in the room.

The figure we care about more than any of them is the size of your dispersion ellipse. A change that adds four yards of carry and eight yards of left-right scatter has cost you strokes, and we will not write it up as a gain.

A local note

Two hundred foggy mornings do not play like July

Sacramento sits barely above sea level and the air changes character dramatically across the year. A dense January morning off the delta fog and a 102 degree August afternoon are not the same ball flight, and a golfer who gets fitted in one and judges the result in the other will be disappointed for reasons that have nothing to do with the club.

We note the conditions on the day of your session on the sheet, and if we are building for somebody whose golf is concentrated in one part of the year, we say which part we are optimising for. Winter league players and summer tournament players are genuinely different fits at the margins.

When we say do not buy

If the best tested option beats your current driver by less than the spread of your own shots, that is not a result. It happens in perhaps a quarter of driver sessions and we say it plainly rather than letting a screen imply otherwise.

When we say buy

Usually when the existing head is more than a handful of seasons old and the shaft was never chosen, only accepted. That combination produces the largest honest gains we see.

Length, quietly

Stock driver length has crept upward for years. Trimming half an inch tightens strike location for a lot of golfers and costs almost nothing in speed. We test it more often than people expect.

The ball

We will tell you when your ball choice is fighting the driver work, but we do not run ball fittings and we do not sell them. It is a note on the sheet, not a service.

Driver work on a club we did not sell you

Sleeve resets, torque checks, length changes, grip changes and swing weight adjustment are all counter jobs on any driver regardless of where it came from. The torque check is free and takes about four minutes, and if you play an adjustable head you should have one done roughly once a season whether or not anything feels wrong.

An hour, your current driver as the control

Book the single club session. If the answer turns out to be a sleeve position and a regrip, that is the invoice you will get.

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