Category Archives: Tension
Tecnifibre Fire 300
Tecnifibre Fire 300
The Tecnifibre Fire 300 is another great surprise from Tecnifibre.
Why a surprise? This racquet shows up as a very stiff racquet both “out of plane and in plane”, as you will see in the following numbers.
However, the string pattern and spacing present a “canvas” on which you can create the string bed stiffness of your dreams!
Given the stiffness properties of this racquet, we wanted to test the “limits,” so we used a reference tension of 54, one less than the suggested 55 maximum. Without going through all of the numbers, I can tell you that the Effective Stiffness is 26.7, which is well below our observed pain threshold of 30.0.
All of our demo racquets are strung with MonoGut ZX Pro (PEEK). What you do in terms of string may change that number, but you can be sure the racquet stiffness can be mitigated by your choice of string, tension, and racquet technician.
| Manufacturer | Tecnifibre |
|---|---|
| Racquet Model | Fire 300 |
| Reference Tension | 54 |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC/Units | 45.9 |
| String Bed Stiffness -FlexFour/Pounds | 61.1 |
| String Bed Stiffness - SBS/Pounds | 46 |
| String Bed Stiffness - ERT/Kg/cm | 33 |
| Racquet Flex, RDC/Units | 73 |
| Racquet Flex, FlexFour/Lbs | 46 |
| Racquet - In Plane Stiffness/Lbs/Inch | 537.2 |
| Weight, Grams | 324 |
| Weight, Ounces | 11.3 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 68.7 |
| Length, Inch | 27.047 |
| Head Width | 9.98 |
| Head Length | 12.72 |
| Head Area, cm2 | 643.2 |
| Head Area, Sq. Inch | 99.7 |
| Beam Height @ Grip, mm | 25 |
| Beam Height @ Mid, mm | 25.3 |
| Beam Height @ Tip | 24.8 |
| Beam Width @ Grip, mm | 15.5 |
| Beam Width @ Throat, mm | 13.8 |
| Beam Width @ Mid, mm | 11.2 |
| Beam Width @ Tip, mm | 12.2 w/Bumper Guard |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .661 |
| Main String Grid Inch/mm | 8.18/207.7 |
| Cross String Grid Inch/mm | 9.87/250.7 |
| Density (% of head filled w/ string) | .794 |
| Average Cross String Space | .513 |
| Average Main String Space | .508 |
| Dynamic Tension, Kp, ERT | 33 |
| Dynamic Tension, Lbs/in | 185.6 |
| First Moment, Nm | .804 |
| Polar Moment | 335 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 320 |
| Swing Weight, Ounces | 11.29 |
| Swing Weight Calculated | 338 |
| Power, RDC | 65 |
| Control, RDC | 32 |
| Manueverability, RDC | 73 |
| Power, Calculated | 2352.1 |
| Head Points | 6.46 |
| Head Weight, % | 47.0% |
| Center of Percussion | 21.4 |
| Dwell Time, ms | 7.22 |
| Efective Stiffness - lbs | 26.2 - Flex Four Data |
| K, Lb/In | 134.6 |
| Dynamic Stiffness/Lbs | 369.5 |
| Dynamic Force/Lbs | 141.8 |
| GDR Ratio: static/dynamic | 1.94 |
| Recoil Weight | 161.2 |
| Twist Weight | 240.6 |
| End Weight | 130.9 |
| Tip Weight | 190.3 |
| 9 O'Clock | 97.1 |
| 3 O'Clock | 96.2 |
| Butt End | 129.9 |
| COF, Main | .350 |
| COF, Cross | .262 |
The Consumer and SBS
Sting Bed Stiffness (SBS) could be considered alongside performance cars. In the simplest of terms, a high-performance car requires some understanding of what it is going to do; otherwise, you will end up in the trees or worse!
The same with String Bed Stiffness (SBS). If you don’t know what it is going to do, you may end up in the fence!
Why String Bed Stiffness (SBS) matters.
String bed stiffness is a critical performance metric and therefore deserves more attention than it gets in the discussion(s) of string characteristics.
In this video, which is a little “jumpy” at first, you will see the data we collect for every racquet we do. For this discussion, we concentrate on these data:
- Reference Tension
- RDC string bed stiffness
- Flex Four-string bed stiffness
- Racquet Quest SBS (String Sense) stiffness
- Effective stiffness
- Master Tensometer string bed stiffness (kg/cm^)
Big 10 Tennis Player of the Week.
Jack Anthrop has been playing extraordinary tennis for a long time and was recently named Big 10 Tennis Player of the Week after an impressive outing in Dallas!
The link below will take you to the Ohio State post; however, I want to share some of the things Jack has done to secure the game he has.
Jack uses a Head Speed SMU racquet. The head size is 96 square inches and has a swing weight of 333 kg/cm^. This inertia couples with the overall weight of 352 grams (12.4 oz) to create stability and power.
Jack uses MonoGut ZX Pro natural at a reference tension of 56 pounds and string bed stiffness of 60 pounds. This creates a dynamic stiffness of 393.6 PPI.
Jack has been using Ashaway MonoGut ZX Pro since the age of 9! Yep, that’s right, age 9! MonoGut ZX and ZX Pro material is PEEK, a unique string that offers outstanding comfort, feel, and power with better durability than some other materials.
It is our position that more players of any level should consider MonoGut ZX or ZX Pro (thinner). It really just makes sense…just ask Jack, Big 10 Men’s Tennis Player of the Week!
Let us know if you have questions about Jack’s racquet or string. We have been working with Jack since age 9, and we would like to share what we can to help achieve your tennis goal(s).
Thank you, Head and Ashaway, for your continued support!
mens-tennis-anthrop-earns-big-ten-player-of-the-week
Congratulations, Jack, your new Head Speed SMU’s are on the way.
Head Speed SMU
Head Speed SMU
Racquet Quest, LLC
