Putter Custom Fitting using Quintic Ball Roll
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The best way to fit a putter or prove the putter is properly fit is to analyze what the ball is doing. The tools in Quintic Ball Roll help you do that.
Ball Speed the highest velocity the ball achieved. This is a good tool for determining if the person is hitting the ball on the sweet spot of the putter consistently. Have a person take five to ten putts of the same distance. If you get a range of more than 1 feet/sec on a ten to fifteen foot putt that means they are not always hitting it on the same spot (hopefully sweet spot) on the putter face. If they are using a blade style putter, they may need to switch to a bigger sweet spot putter like a mallet or you may need to correct their putting stroke.
RPM Hook or Cut Spin will tell you whether they are putting cut or hook spin on their putts. Again have them take 5 to 10 putts and look for patterns. If the spin rate is over 10 rpm's (either cut or hook) the number will turn red, under 10 it will be black. Anything under 10 rpm's either cut or hook is acceptable. 10 to 30 rpm's and you may need to change the fitting of their putter (lie angle, face balanced vs. toe heavy to correct the spin rate). Over 30 rpm's you need to fix their stroke.
True Roll is the computer calculating the point at which true roll (roll with no skid) occurs. This is you most important feature as it takes into account the side spin. Just because a ball may have better rotation at 12 or 18 inches doesn't mean it will achieve true roll first. And true roll is what you are ultimately trying to achieve. The ideal true roll number is 10% to 20% of the distance of the putt.
Launch Angle provides you with the launch angle of the ball leaving the putter face. This is helpful to see if the ball is going to high in the air or being driven into the ground and bouncing back up. The ideal launch angle will vary based upon green speed and type of grass but you are looking to keep it between 1 degree and 2 degrees.
Vertical Bounce provides you with a graph of how the ball bounced during the 12 inches. This is helpful to see the effects the launch angle and side spin had on how smoothly the ball rolled over the first 12 inches. This information will help identify what loft they need on their putter to get a smooth roll.
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