Golfhacker11

So all you have to do is aim,” says Rife.
With a growing trend for high-MOI mallets
on tour, as the world’s best golfers seek to
To achieve ultra-high MOI it requires a
take nerves out of the equation when they
stand over high-pressure putts worth
really big putter head that is usually a
combination of ultra-light aluminium and
hundreds of thousands of dollars, putter
designer Guerin Rife set himself a
stainless steel that is about three times
heavier. The ER9 features a milled 6061
challenge to design a putter with double
aluminium body with strategically located
the MOI of many of the most popular high
MOI head designs on tour.
hollow cylinders running the length of the
head from face to rear along the extreme
“I noticed more and more lately that many
heel and toe to receive sizeable steel
weights. This design keeps the overall size
players on the PGA Tour are opting for
high MOI oversized putter head designs,”
down to manageable levels while still
achieving an astonishing 10,000 MOI.
comments Rife. “They have to stand over a
4-foot putt worth $200k to $1m that will
The head shape is essentially
change their life. The pressure can be
square with a wide central cavity
paralysing.”
framed by alignment lines along
each side and a single line in the
The nerves don’t have to take over too
center. This shape allows for a
much for an extremely costly miss, so
full range of short to long rod
highly stable putter designs that help to
weights to dial in swing weight
counter some of the potentially damaging
based on shaft length, grip
effects of pressure and nerves make
weights and counter
absolute sense.
weights. To help
reduce the size
MOI, or Moment of Inertia, is essentially an
visually, the ER9’s
object’s resistance to twisting. “For a putter,
aluminium body is
that translates to a rock steady swing path
anodized in a dark
and an enlarged area of forgiveness off the
grey satin finish.
face.