Radical would continue the TwinTube frame design, but would add the benefits of Titanium to the construction process. The Summer of 1999 would see a whole new Radical from Head, the Ti. In the Summer of 1997, the TwinTube Radical received a cosmetic update to stay in step with the ever evolving fashion of Agassi. The designed benefit of TwinTube construction was to increase ball acceleration and provide more feel. The inner hard shell of TwinTube technology is made of pure graphite while the outer shell consists of a soft, absorbing polyamide. The first update to the Radical line came in 1995 with the introduction of the TwinTube Radical. One year after its inception Agassi used it to capture the US Open title, becoming the first unseeded player to win the Open in 28 years. Called the Trysis 260 Radical in the US market, this first Radical featured an Integrated Damping System and a 50 percent high modulus graphite, 5 percent Twaron and 45 percent graphite construction. With the signing of Agassi to Head in 1993, Head launched its first Radical series racquet. To trace the history of the Radical line we must first mention the Radical's most famous proponent, Andre Agassi. Continued in the Liquidmetal Radical are previous Head technologies such as TwinTube frame construction and Intellifibres. According to, Liquidmetal alloy provides 29% more power than Titanium. Liquidmetal, a metal with the atomic structure of a liquid, was developed by the California Institute of Technology (CalTech). The result: superior comfort for the arm and a perfect sound and feel every time.The new Liquidmetal Radical, the latest addition to the Radical series of racquets from Head, introduces a new material to racquet construction. HEAD’s Integrated String Dampener, fixed onto the grommets, reduces string vibration. Now, even the most powerful game is easy on the arm. NoShox significantly reduces racquet vibrations by more than 27% compared to conventional racquets. The NoShox Dampening System consists of a newly developed memory foam integrated into the racquet handle. Now every shot feels like you’ve hit the sweetspot. Total Sweetspot Construction (TSC) extends the sweetspot throughout the entire racquet head resulting in ultimate control. Flat surfaces show significantly less rigidity and strength. Corrugation enhances surface rigidity for optimum strength and stiffness under pressure. Through its innovative corrugated structure, Total Sweetspot Construction increases torsional stability in the racquet head. Total Sweetspot Construction (TSC) helps for ultimate performance. The benefit to every player: The unique Liquidmetal atomic structure is 2 1/2 times stronger than titanium and delivers 29% more power. Titanium: Standard atomic structure deforms on impact, causing extreme energy loss. Liquidmetal®: The unique Liquidmetal atomic structure does not deform on impact, resulting in ultimate energy return. Compared to conventional metals, it offers advantages that are far beyond today’s racquet technology. The secret of Liquidmetal’s performance is its liquid atomic structure. Due to its liquid atomic structure, no energy is lost on ball impact. The Liquidmetal material is applied to four strategic areas of the racquet’s head and is the only material that utilizes all the energy your swing generates. Benefits are enhanced by the Total Sweetspot Construction, NoShox Dampening System and Integrated String Dampener. With Liquidmetal the game will change in every respect. The revolution begins with a new material never before used in modern racquet design: Liquidmetal®. Head Liquidmetal® Tennis Racquet Technology
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