[no_mind_golfer]

Collisions equation:

" I used to hit that 1-iron off the fairway and knock the son-of-a bitch 250 yards on the carry. Mike Growled" http://books.google.com/books?id=GqF...um=1&ct=result

Austin was talking about a one-iron he made where he brazed a tungsten rod to the back of the club-face at the sweet spot. By doing that he increased Ma from what's normally about 0.2 kg to something much more. Maybe it was 0.3 kg.... So then assuming he could swing a "heavy" one-iron (say 0.3 kg) just as fast as he could swing a "light" one-iron (0.2 kg) tt (remember he was big and quite a strong athlete)

Vb = Vo (.3/.346)(1 + e) or Vo => 0.86 * 1.83 Vo = 1.58 Vo

1.58/1.48 = 7.2%

The ball would leave the club-face of Mike's modified one-iron having 7.2% more speed (provided he could swing the club just as fast). You see there is the catch. The heavier the club the more inertia it has. The more inertia it has the more force (and torque) is required to accelerate it. Over the years golfers have arrived at the optimal compromise for a given body type... we call that that "swing weight".

Its safe to say few people would be able to make Mike Austin's modified one-iron perform. Perhaps Sean Fister or Jason Zubak could...