Constraints in Sports & Technology
Dave Tutelman -- 1/22/01 revised 9/2/2007
This was instigated by a ShopTalk discussion on spring-face
drivers.
I took the position that they never should have been allowed at all by
the USGA. By setting a limit on face spring (specifically
coefficient
of restitution), the USGA was already changing the sport in undesirable
ways. Terry Richard asked me if I viewed all design changes in
golf
clubs negatively. I provided a list of changes I thought were
positive,
and we had the following [edited for brevity; complete text attached at
the end]:
DaveT (me):
All of these advances had two characteristics that
speed/thickness
designs don't share:
(1) They are not destructive if misused, any more than the clubs
that went before them.
(2) They require no stretching of the rules to gain their
advantage.
Terry:
... when I read your comments about stretching of the
rules
to gain their advantage, I get the impression that you think golf club
advancement, e.g. flex face driver, is unfair. Is that true?
Short form: "yes!"
But the long form begs to be told. It includes a brief
excursion
through two other sports before we get back to golf.
The rules define the game
Rules are constraints! In a sports context, they constrain what
you
are allowed to do. As such they define the game.
Change
a rule, and you will change the game, sometimes in small ways and
sometimes
large, sometimes for the better and sometimes for the worse. (In
the next section, I'll get back to an important question: who gets to
decide
what's better and what's worse.)
Let's look at American Football as an example of what happens when
you
vary the rules.
The game has a set of rules that are used in high school, college,
and
professional football. There are variations among those, but the
variations are mostly to protect the safety and health of younger
scholastic
participants. But there are a couple of common variations that
are
very different, serve an important purpose, and are achieved by
imposing
additional constraints.
First additional constraint: No tackling.
Instead,
the ball carrier is considered "down" if an opponent touches him with
two
hands simultaneously. This variation, commonly known as "two-hand
touch" football, makes it possible for adolescents and young adults to
play "football" without pads or helmets. It brings football to
people
who would never get to play the "official" organized sport. Much
less expensive, much more democratic. But to remove the
restriction
on who gets to play, we had to add a restriction to the
rules.
Second additional constraint: Restricted blocking and rushing.
Now lets add a few more constraints to "no tackling". All
blocking
must be above the waist and you can't leave your feet to block.
To
protect the quarterback with this restricted blocking, rushers must
wait
three seconds (count it out loud) before they can cross the line of
scrimmage,
unless the QB lets someone else touch the ball.
This may sound pretty wimpy and a far cry from "real
football", but it lets a city boy like me play football on paved
playgrounds.
Again, adding additional constraints creates a whole new game. It
has some of the "flow" and some of the skills of football, but it's a
completely different game. Just by changing a few rules.
At the other end of the spectrum, consider what Vince McMahon is
doing.
His new XFL is going to remove constraints, in the hope that the
resulting
game will draw spectators who feel the NFL is too tame. Probably
the same set of people who go to auto races solely to see a
crash.
A few rules changes, and we have a different game that appeals to
different
people.
OK, enough of the football examples. You get the idea: the
rules define what the game is and who plays it. Now let's
turn
to another sport -- sailboat racing -- and see what lessons lurk there.
The rules constrain special interests
For about a decade, I was involved in sailboat racing at the local and
national level. I raced in the Albacore class. The Albacore
is a two-person, 15-foot planing one-design sailboat with a mainsail
and
jib. For much of that time, I was on the US specifications
committee
for the class, including serving as measurer for two national
championships.
In that role, I was exposed to another important aspect of the
rules.
This time, it's an unfortunate aspect.
There are many to whom winning is important enough that they push
the
rules, look for loopholes (advantages that the rules intended to
prevent,
but they weren't sufficiently tight), and occasionally exceed the rules
and take their lumps. Most serious competitors fall into this
category.
But there are also those who want to win so badly that they
deliberately
break the rules and hope they don't get caught. When we encounter
people like this in society at large, we call them "criminals"; in
sports,
they are merely "cheaters".
An observation from sailboat racing: all too often the
cheaters
had a commercial interest in winning. Typically they were
boatbuilders
or sailmakers. Not all of the special-interest guys were
cheaters;
I remember some highly competitive and scrupulously honest
"professionals"
who were also talented enough to win regularly. But most of the
cheaters
I saw were indeed in the sailing business, and stood to make money --
either directly or indirectly through favorable buzz -- if they,
or their boats, or their sails won a big regatta.
We on the specifications committee saw our goals quite
clearly.
We were the elected representatives of the participants in Albacore
racing,
and our job was to protect their interest in fair competition.
The
most pointed statement of our goals would be:
-
Racing in the class should be a contest of individual
skill. It
should not be possible to buy an advantage by spending more money than
your competitors.
This is the essence of a one-design class. (The America's Cup
race
is different. It is sailed in a "development class" which
promotes
design and technology advance as well as sailing skill. The
result
is the expenditure of huge sums to win.)
In support of this objective, the committee had to (1) set the rules
properly, and (2) enforce the rules strictly. Both were essential
to maintain the class as a "family-oriented" one-design class.
-
Setting the rules: Among the class rules were
minimum
weight restrictions (to assure that the boat could be both sturdy and
competitive),
maximum sail measurements (to assure that you didn't have to be a
gorilla
to win), and restrictions on how often you could buy sails (to keep the
pocketbook from being a serious competitive weapon). We annually
faced challenges that had to be fended off with new or clarified
constraints,
usually due to some boatbuilder or sailmaker trying to come up with a
faster
product, and make more money.
-
Enforcing the rules:
At the local level, every
boat
was completely measured, as was every suit of sails used in
competition.
You couldn't enter a sanctioned regatta without a measurement
certificate
for the boat, and the fleet measurer's initials on the sails. At
Nationals, every sail was completely measured, and every boat was
spot-checked.
We never announced beforehand which 3 to 6 rules we'd be
checking. And
we weren't bashful about disqualifying competitors.
The pre-Nationals measuring produced some memorable moments. I
remember
one nationals where six new XYZ-brand boats showed up for the
day-before
measuring with their centerboard bolt holes two inches too far
aft.
The owners (and Mr. XYZ, who was present to compete) were up until the
wee hours
with drills, fiberglass, and resin. Fortunately, the boats
"measured
in" (and did not leak too badly) the next morning. But Mr. XYZ
himself
missed the first race because his sails were too large in a couple of
dimensions.
Then there was Mr. ABC, who thought he could build a boat lighter
than
the minimum and have it "corrected" with additional weight. The
potential
advantage was that all his boats would be right at the minimum weight,
and the correctors would be low and centered, where they did the least
damage to performance. He sold a whole fleet of these Albacores
before
the first was submitted for measurement. Most of them were below
the bare minimum weight; they were never allowed to race outside their
own home fleet (which "grandfathered" them, because the superlights
were
all in that one club). The problem was not long-lived.
There
was a reason for the weight rule: assure a sturdy boat --
remember?
The illegal boats had the longevity of a fruit fly. In a couple
of
years none of them were around any more, so nobody had to listen to complaints about being restricted to their home club.
The lesson from this experience was that the rules, as constraints
to
level the playing field, are challenged mostly by the commercial
interests,
those with something to sell. And, as often as not, they
simply break the rule quietly instead of challenging it openly, and
hope
you won't notice. The idea is to sell more of their goods, and
charge
more for their goods, because they can claim better performance in
competition.
I'm sure y'all see where I'm going with this: right back to golf...
Back to golf
Golf and sailboat racing have a number of important similarities:
-
The equipment can have an effect in determining the outcome of
competition.
-
Each competitor selects/buys his or her own equipment.
-
In the absence of constraints (rules), it is possible to build
better-performing
equipment.
-
In most cases of improved performance, the equipment carries a higher
price
tag. (This may be due to real costs of technology or
manufacturing
challenges, or due to competitive "product differentiation.")
After my experience in the Albacore class, I know what I expect of the
USGA rules committee as a dues-paying member. I expect them to
protect
my interest in fair competition without an excess of pocketbook
power.
I could easily paraphrase the goal I stated earlier for the Albacore
specifications
committee:
-
Golf tournaments should be contests of individual skill.
It should
not be possible to buy an advantage by spending more money than your
competitors.
This goal is obvious to me. But, equally obviously, it conflicts
with the goals of those selling golf equipment. When I look at
the
roles of rule-setting and rule-enforcing, I see:
-
The rules of golf have long said, "The club face must not be designed
and
manufactured to have the effect at impact of a spring which would
unduly
influence the movement of the ball." The original specifications
committee was not stupid; they understood coefficient of restitution,
and
what some potential future technology could do to the game -- and they
set a rule to prevent it.
-
Enforcement? Ah, there's the rub! Some manufacturer (I'm
inclined
to point a finger at Callaway, but would listen to argument that it's
somebody
else) quietly started manufacturing clubs that were in tangible
violation
of the rule. But, because the USGA thought it would be a "future
technology", it was not vigilant enough to pick it up -- not even to
test
for it -- before such clubs were in the hands of many thousands,
perhaps
millions, of golfers.
Let's not underestimate the dishonesty of the Callaways of the world
here.
Having been caught breaking the rules, they point a finger at the USGA
for being anti-golfer: "You want to take away the toys that your
constituents
love so much." They never mention that they knowingly sold
illegal
toys, nor that they charge a lot more for the illegal toys than the
legal
ones. (BTW, I use "illegal" here to mean in violation of the
rules
against spring effect, not just in violation of the arbitrary limit
with
which the USGA tried to appease the industry.)
I started this article with the thesis that rules define the
game.
OK, how will the new status quo (relaxed rules against
spring
effect) change the game? Here's my prediction:
-
Distances will increase. They will increase the most
for the
best players. That's because it's hard to design a spring face
that
isn't more effective if you hit the ball with the middle of the
clubface.
So the Tour players, who are already pushing the limits of existing
courses,
are the ones who will push these limits furthest and fastest.
This
seems a high price to pay for the rather minimal distance gains of the
Sunday golfer.
-
Prices will increase. That is because the gains come
with
sophisticated technology. And, unlike the introduction of the
steel
shaft or cast iron head, the technology is not being used to improve
the
uniformity or yield of the process (which would bring costs
down).
Maybe there is hope that competition and further advances in technology
will result in a lowering of prices beyond the very short term.
But
I'm not holding my breath.
-
Snake-oil will abound. When you could be sure that
clubfaces
were effectively rigid, there was a sure-fire defense to someone
selling
a driver head that purports to hit the ball further: if it did, it
would
be illegal. Now that defense is gone. And we have nothing
to
replace it. Manufacturers are refusing to compete on the basis of
published COR. And even if they did, what independent clubmaker
could
check it and call them for not meeting spec. Face it, the golf
club
equipment industry is not known for technical honesty. If the
USGA
won't test and specify, who will?
Except for the distant hope of decreasing prices if/when the technology
is mature, I think these are uniformly bad changes to the game.
The following is the ShopTalk
discussion that led to this article. I have changed the format -- but
none of the words -- so it is easier to follow and to keep track of who
said what.
From: Terry Richard
Sent: Sunday, January 14, 2001 9:46 PM
Just received the 2001 Golfsmith
Clubmaking Catalog and
have
a question about one of the products....
What's the purpose
of the face thickness increasing as the
loft angle decreases
or the swing speed increases?
From: Dave Tutelman
That's the way Golfsmith has been dealing with
spring effect
for the
last
couple of years. They did it with the
Elasteel drivers,
too.
As the clubhead speed goes down:
- You need more loft for maximum distance.
- You CAN make the face thinner without
having it
collapse.
And the thinner the face, the
more the
spring effect.
The downside to this is, if you let your
gorilla brother
with the
115mph
clubhead speed hit your 70-90mph driver, it
will ruin the
head -- and
Golfsmith isn't about to replace it. I
don't view
this as a positive
development in club design.
Does anybody know if this is also the design
philosophy
for the new
Taylor
Made 300 series drivers?
DaveT
From: "Dave Tutelman" <dtutelman@monmouth.com>
To: <ShopTalk@mail.msen.com>
Sent: Tuesday, January 16, 2001 5:57 PM
Subject: Re: ShopTalk: Extreme Steel Metal Woods
----- Original Message -----
From: Terry Richard <richard1505@home.com>
Sent: Monday, January 15, 2001 10:20 PM
> Dave,
> What do you think of the forged 17-7 stainless steel
face?
Based on the
> club head materials reference chart on pg. # 65 in
the 2001
Golfsmith
> Catalog ...
Actually, I haven't received my 2001 catalog yet.
I'd
like to reserve
comment until I do.
> Your statement below about not being a positive
development
in club design,
> what do you consider to be a positive development in
club
head design?
I can think of lots of them. Where shall I start?
- Cavity back irons (more forgiving).
- Square grooves on irons (spin from the rough).
- Metalwoods (peripheral weighting, lower cost).
- Keel sole on metalwoods, even drivers.
(Reduce
the
lie angle dependency on golfer, on the
ball's
lie.)
- Titanium metalwoods (Lighter + larger = more
distance)
- Tungsten sole weighting in fairway woods.
(Orlimar
will take credit; I credit TaylorMade,
GolfWorks,
and
Golfsmith as REALLY doing what Orlimar
only
advertised.)
All of these advances had two characteristics that
speed/thickness
designs
don't share:
(1) They are not destructive if misused, any more than
the
clubs that went
before them.
(2) They require no stretching of the rules to gain their
advantage.
Hope this answers your question, and tells you my
reasoning.
DaveT
From: Terry Richard <richard1505@home.com>
Sent: Tuesday, January 16, 2001 9:41 PM
Subject: Re: ShopTalk: Extreme Steel Metal Woods
Dave,
The list you provided is a comprehensive account of
positive
development in club head design, nice job. But when I
read
your comments
about stretching of the rules to gain their advantage, I get
the impression
that you think golf club advancement, e.g. flex face driver,
is unfair. Is
that true? I wonder what the golfing world
thought in the early days of
the steel shaft when flex was being experimented with, to
provide
a little
more kick for the light swinger (R flex) and more control,
less
flex for the
high speed swingers (S flex)? Do you think that the
young
developments of
flex face drivers could relate to the early day development of
steel shaft
flex variations?
Maybe some day the consumer will have
the ability to
choose a driver face flex that meets their swing
characteristics,
more so
than today, and then combine that with a specific shaft.
Why not throw
another factor in club characteristics, trying to discover
that
perfect
stick. As so eloquently stated by a ShopTalker recently,
the search is
fun!!!
Respectfully,
Terry
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