‘Rasanter’ series is the most successful rubber series in andro range so far. It is further divided into the original series that was initially released and the ‘EC’ series that was released after 2021. ‘EC’ is the abbreviate of ‘Energy Cell’, and newly developed ‘Energy Cell Sponge’ is being applied to the latest models of the ‘Rasanter’ series released after 2021. The naming system of the ‘Rasanter’ series is ‘Rasanter’ followed by one letter of the alphabet and two digits. The alphabet indicates the nature of the sub-series and the two digits indicate the hardness of the sponge in German standard. The original series is divided into the R series (= R50, R47, R42, R37) which focuses on spin, and the V series (= V47, V42) which focuses on speed. The latest ‘EC’ series was first launched in early 2022 with the new R series (= R53, R48, R45), and has been followed by the ‘sticky’ C series (C53, C48) in early 2023. The ‘EC’ series – new R series and C series – basically focuses on spin. The new R series and the C series have something in common in that they both can easily make strong rotational. But, they are distinguished by playing strategy. The R series is more suitable for active attak that utilizes high speed while the C series focuses on counterattack that utilizes its excellent controllability.

‘Rasanter R’ series is the family of new-generation tension rubbers focused on spin performance. ‘R’ means ‘rotation’. The original ‘R’ series consists of four variations – R50, R47, R42 and R37. (Numbers indicate sponge densities in German standard.) And, three models of new ‘R’ series – R53, R48 and R45′ – have been added as the top models of ‘Rasanter’ series. According to andro, the new ‘R’ series adapts new version of EC (Energy Cell) sponge whose feeling and energy efficiency have been improved. But, the overall appearance of ‘R’ series is somewhat confusing for the customers who don’t know andro rubber range very well because two different generations with similar numbers coexist in the same series. In my opinion, the new three models should have been named differently, for example ‘Rasanter P’ series. Then customers will easily distinguish between new ‘Rasanter P53/P48/P45’ and old ‘Rasanter P50/R47/R42/R37’. Anyway, please note that the ‘Rasanter R’ models whose numbers are 53 or 48 or 45 are the most advanced models of current German rubbers, and therefore give higher power than the models with but a bit different numbers respectively. (53 vs 50, 48 vs 47 and 45 vs 42).

‘Rasanter R53’ and ‘Rasanter R48’ are respectively the hard sponge version and the medium sponge version of ‘New Rasanter R’ series which adapts new EC sponges. (Medium soft version – ‘Rasanter R45’ – isn’t shown in the picture.) We can consider that ‘Rasanter R53’ is more powerful version of old ‘Rasanter 50’ and ‘Rasanter R48’ is more powerful version of old ‘Rasnater R48’. Although new models have harder sponges, players may feel that new models are softer than old models, because of new more advanced sponges. However, the old models – ‘Rasanter R50’ and ‘Rasanter R47’ – are also very good rubber yet, and may be better selection for most of players because old models are cheaper than new models. TTGearLab recommends new models for highly skilled players, and old models for ordinary players.

‘R’ is the initial of ‘Rotation’. When ‘Rasanter’ series was first introduces, there are two different kinds of ‘Rasanter’ series – ‘Rasanter V’ series which is focused on velocity and ‘Rasanter R’ series which is focused on rotation. The original ‘Rasanter R’ series had been released as four variations – ‘R50’, ‘R47’, ‘R42’ and ‘R37’. And, afterwards ‘R53’ which is equipped with more advanced sponge was added. So the package of ‘Rasanter R53’ shown in above picture shows five variations of ‘Rasanter R’ series including ‘R53’. (Until that time there wasn’t confusion. However, the problem is that two new variations with more advanced sponges – ‘R48’ and ‘R45’ – have been added. So currently there are seven variations – four old and three new – in ‘Rasnater R’ series. Especially the player who choose ‘Rasanter’ series for the first time will be concerned about the difference between ‘R47’ and ‘R48’.)

Above picture shows the back cover of the packaging of ‘Rasanter R53’. It is introducing ‘R53’ just as new harder variation of ‘Rasanter’ series. There isn’t any description that ‘Rasanter R53’ is more advanced one than the other four variations.

Above picture shows the back cover of the packaging of ‘Rasanter R48’. The picture including four old versions disappeared. And instead, ‘EC (Energy Cell)’ sponge is being emphasized.

‘Rasanter R53’ is the hard sponge version of ‘New Rasanter R’ series. Because of more advanced sponge, its feeling may be softer than that of ‘Rasanter R50’ when the player hits the ball very strongly.

‘Rasanter R48’ is the hard sponge version of ‘New Rasanter R’ series. Because of more advanced sponge, its feeling is softer than that of ‘Rasanter R47’ when the player hits the ball very strongly.

The top sheet of ‘Rasanter R’ series is not sticky. But it grips the ball very strongly.

The very distinctive green sponge is a tradition from the ‘Rasant’ series that was released before ‘Rasanter’. andro has been pushing this ‘green’ strongly ever since it was chosen as andro’s representative color. The pores of sponge are so large that they are noticeable even in this photo. Sponge densities are 53° and 48° in German standard.

The pimple geometry is similar to that of ‘Tenergy 05’. The cylindrical pimples are arranged densely. This type of pimple geometry provides high ability of generating rotation. But, we can observe that the base of the top sheet is thinner than the height of pimple. Because the base of top sheet is thinner than that of ordinary rubbers, the sponge can be thicker. That is one of the most important features of ‘Rasanter’ series, and andro is calling the sponge which can be thicker than the maximum possible thickness of ordinary sponge as ULTRAMAX sponge.

‘TENSOR BIOS’ mark is still being used. But current ‘TENSOR BIOS’ rubbers are totally different from the ‘TENSOR BIOS’ rubber until 2008 – for example ‘Roxon’.

Three color variations – Red, Black and Green – are avaialbe for tho sheet. (Green isn’t shown in above picture.)

TTGearLab will use andro ‘Rasanter R53’ and ‘Rasanter R48’ for the field testing of various blades.

You can buy andro Rasanter R53 & Rasanter R48 at megaspin.net. If you buy the products through following links, a part of profit is shared by TTGearLab. So it becomes a donation to TTGearLab.

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