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Polara Golf is brand for a line of golf balls that correct hooks and slices, based on their design. Aero-X Golf, Inc is the manufacturer that created the Polara Ultimate Straight and Polara Ultimate Straight XS golf balls featuring “Self-Correcting Technology” that reduces hooks and slices by up to 75%.〔(Buy Self Correcting Long Distance Golf Balls For Sale Online ). Polara Golf. Retrieved on 2011-05-18.〕 David L. Felker, PhD, Chairman of the Board, CEO, Head of Technology of Aero-X Golf, Inc. and former Callaway Golf Company founding member and Vice President of Research and Development, coinvented the Polara Ultimate Straight golf balls, along with Douglas C. Winfield PhD, formerly of Maxfli and Titleist. The new Polara Ultimate Straight golf balls represent a large performance improvement over the original Polara golf ball which was first sold in 1977. The new design, released August 2010, utilizes state-of-the-art aerodynamics and a principal axis of inertia. The ball has shallow truncated dimples around its equator and has deep spherical and small spherical dimples on each of the ball's poles. In January 2012, Polara added two additional products to its line of self-correcting golf balls: Polara XD and Polara XDS. "XD" stands for "Extra Distance" and "XDS" stands for "Extra Distance and Spin". The "Ultimate Straight" Polara golf balls are designed for the golfer whose primary need is slice or hook correction. The "XD" and "XDS" correct only 50% (as opposed to 75% correction for the "Ultimate Straight") and have a slightly higher trajectory, which for many golfers will provide additional distance, but not as much slice & hook correction as the "Ultimate Straight" balls. Officially sanctioned balls are designed to be as symmetrical as possible. This symmetry is the result of a dispute that stemmed from the original Polara, that had six rows of normal dimples on its equator but very shallow dimples elsewhere. This asymmetrical design helped the ball self-adjust its spin-axis during the flight. Over 300,000 balls were sold. The United States Golf Association refused to sanction it for tournament play and, in 1981, changed the rules to ban aerodynamic asymmetrical balls. Polara's producer sued the USGA and the association paid US$1.375 million in a 1985 out-of-court settlement.〔(SCOUTING – SCOUTING – Duffer's Dream Finally Over ). NYTimes.com (1986-01-08). Retrieved on 2011-05-18.〕 Market research performed by Golf Datatech found that roughly 28% of frequent golfers would be interested in playing a ball with benefits, even if it was nonconforming.〔 According to Polara Golf CEO Gary De Bay, about 40% of golfers who tried the ball at a demo day said they would buy it.〔(A Golf Ball That Guarantees a Straight Drive – CNBC ). Video.cnbc.com (2011-05-10). Retrieved on 2011-05-18.〕 An article in ''The New York Times'' in May 2011 sparked a media blitz, including a segment on CNBC.〔 The great demand "crashed Polara Golf’s computer servers for hours."〔 Bill Pennington, the article's author, found that open boxes of Polara balls would be emptied by the end of the day. There was backlash against the "illegal" ball. Ken Hambleton backtracked after interviewing Felker, writing "The problem with the latest version of Polara ... is that it works." In January 2012, Polara announced its new XD and XDS balls, which have higher ball flight and extra distance.〔(Polara Golf's new XD™ (Extra Distance) and XDS™ (Extra Distance & Spin) Self-Correcting Golf Balls Fly High at 2012 PGA Merchandise Show )〕 ==References== *(Felker Says Recreational Golfers Accept Non-Slicing Ball - The Washington Post ). Bloomberg (2011-05-20). * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Polara Golf」の詳細全文を読む スポンサード リンク
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