Technical Library
Stringing Technical Library
A professional library organized by machines, repair and calibration, stringing methods, manuals, racket/string specs, and tool fabrication.
Organized by stringing machines, repair and calibration, stringing methods, manuals, racket/string specs, and tool fabrication. Images and downloads are served from this site.
Machines and diagnostics
Stringing-machine photos, structure notes, reviews, and model references organized as technical knowledge.
Wilson Baiardo
Here are a few pictures of the Wilson Baiardo
2025-04-09
26 local assets
Open resource
Measuring “correctly” with the Stringway Stringlab 2
With the SL2, there are many “correct” ways to measure. Unfortunately, most people measure incorrectly, leading to inaccurate and inconsistent results. Here, I’ll suggest two […]
2024-02-15
0 local assets
Open resource
Head TE3300
Here are a few pictures of the Head TE3300
2021-05-07
64 local assets
Open resource
Drop-Weight Machines – Theory and Cardinal Errors
The drop-weight principle is likely (exact data probably doesn’t exist…) the most widely used tensioning principle in stringing machines. It requires few mechanical parts, no […]
2020-01-21
0 local assets
Open resource
Hebelarm-Maschinen – Theorie und Kardinalfehler
Das Hebelarm-Prinzip ist vermutlich (genaue Daten wird es wohl nicht geben…) das am weitesten verbreitetste Zugprinzip bei Bespannungsmaschinen. Es benötigt wenig Mechanische Teile, keine Nachkalibrierung und ist im Gegensatz z.B. zur Kurbel ein sog. konstante
2020-01-21
1 local assets
Open resource
[Video Review] Tennisman StringMaster Deluxe
The shop Tennisman.de presented a new series of stringing machines in 2019 under the name “StringMaster,” claiming to be the “highest quality electronic stringing machine […]
2020-01-14
0 local assets
Open resource
Yonex Protech 8 Deluxe
Here are a few pictures of the Yonex Protec 8 Deluxe
2020-01-11
40 local assets
Open resource
Tecnifibre Ergo Pro ATP
Here are a few pictures of the Tecnifibre Ergo Pro ATP: Thanks to Damian Younes for the pictures! Here is a link to his Instagram-Account.
2019-09-04
46 local assets
Open resource
Superstringer E20
Here are a few pictures of the Superstringer E20:
2018-03-29
32 local assets
Open resource
Superstringer T70 Rezesion
Getestet wurde die Superstringer T70 welche es bei tennisman.de zu kaufen gibt. Vorweg: Ich werde den Tension Wise Head nicht bewerten. Der Motor ist mittlerweile […]
2016-11-07
24 local assets
Open resource
Babolat RDC
Here are a few pictures of the Babolat Racket Diagnostic Center (Racquet Diagnostic Center):
2016-02-01
4 local assets
Open resource
Yonex ES5 Protech
Da es im Internet nicht soviel Bilder von dieser Maschine gibt habe ich mal ein paar geschossen.
2014-12-31
47 local assets
Open resource
Wise Tension Head 2086
Bilder von dem Wise Tension Head 2086 Beeper ausschalten Wen das Piepsen, bzw. der Beeper beim Erreichen des eingestellten Gewichtes stört kann es wie […]
2014-12-15
16 local assets
Open resource
Yonex Seriennummern (Badminton)
Jeder Badmintonschläger von Yonex sollte eine zweiteilige Seriennummer haben (alle die im bzw. nach dem Jahr 2000 produziert wurden). Der erste Teil steht ganz unten […]
2014-11-28
4 local assets
Open resource
Repair, calibration, and faults
Tension heads, sensors, calibration procedures, and troubleshooting references.
Yonex ES5ProTech Tension Unit
First off: The machine is relatively old and has likely strung around 10000 rackets. Here are the pictures:
2024-03-04
24 local assets
Open resource
Babolat Star 4 / 2502e calibration
Introduction This article is based on a document from Albert Lee. Here you can download the original file: Star 4 Calibration – Link to the […]
2021-04-17
20 local assets
Open resource
Babolat 2502e (Star 4)
Here are a few pictures of the Babolat 2502e (in America it’s called the Star 4)
2018-04-02
38 local assets
Open resource
Babolat Sensor Dual
Hier ein paar Bilder von der Babolat Sensor Dual Besaitungsmaschine: So kann man die Babolat Sensor Dual (und auch manch andere Babolat Maschinen) kalibrieren: […]
2015-01-18
25 local assets
Open resource
Stringing methods and tension tests
Patterns, pre-stretch, clamps, tension loss, and main/cross tension experiments.
The Reverse Pattern
The Yonex Stringing Team uses the reverse pattern under certain conditions. This article is about the reasons, the advantages and disadvantages. What is the reverse […]
2024-03-14
2 local assets
Open resource
Stringing myths debunked – Part III: Fixed Clamps vs. Flying Clamps
Part III: Fixed Clamps vs. Flying Clamps ….you know the drill by now. Experiment setup Rackets: 2 x Victor Super Waves 36 String: Gosen G-Tone […]
2021-09-13
3 local assets
Open resource
Stringing myths debunked – Part II: Pre-Stretch or no Pre-Stretch?
Another heavily discussed topic is the use of machine pre-stretch. Does it really help to reduce tension loss over time? Let’s find out! Rackets: 2 […]
2021-08-13
8 local assets
Open resource
Stringing myths debunked – Part I: Tension loss 1-piece vs. 2-piece patterns over time
One topic that pops up on forums like BadmintonCentral on a regular basis is the question, if certain stringing patterns perform better or worse than […]
2021-07-20
10 local assets
Open resource
Squash and the tension ratio of mains and crosses
Introduction I’ve always wondered, that the side supports are very loose while/after stringing teardrop rackets (e.g. Tecnifibre Carboflex). So i tried/strung and measured a lot. […]
2020-07-06
19 local assets
Open resource
Badminton Stringing Horror
Anyone who strings rackets themselves has surely had a racket or two pressed into their hand that, upon closer inspection, sent a shiver down their […]
2020-01-27
26 local assets
Open resource
Pull only every second string
Some stringers only pull every second string and believe there are no losses from doing so. This myth persists quite stubbornly. So, I set up […]
2018-03-29
25 local assets
Open resource
Nur jede zweite Saite ziehen
Manche Besaiter ziehen nur jede zweite Saite und sind auch der Meinung, dass man dadurch keine Verluste hat. Dieser Mythos haelt sich ziemlich hartnaeckig. Somit habe ich mal einen kleinen Testaufbau gemacht. Als “Referenz” habe ich immer immer mit 9 kg gezoge
2018-03-29
26 local assets
Open resource
Manuals, software, and downloads
PDFs, software packages, ordering tools, and downloadable reference files.
Yonex Bestellung
!ACHTUNG! Dies ist kein offizielles Programm von Yonex! Allgemeine Information Ich hatte mir selbst nur ein kleines Python Script geschrieben, welches mir die Infos von der Webseite geholt hatte. Nachdem mehrere Leute das Programm auch wollten, habe ich
2026-03-05
2 local assets
Open resource
Yonex PT8Deluxe Manual
User manual for the Yonex Protech 8 Deluxe Yonex-PT8Deluxe.pdf
2024-02-20
49 local assets
Open resource
Alpha Accu Swing 2 Manual
User Manual for Alpha Accu Swing 2 Alpha-Accu-Swing-2.pdf
2024-02-20
7 local assets
Open resource
Yonex ES5 Protech Manual
User Manual Yonex-ES5ProTech.pdf Maintenance Guide Yonex-ES5ProTech-Maintanance-Guide.pdf
2024-02-19
54 local assets
Open resource
Rackets, strings, and specs
Grip size, head size, string diameter, gauge, and related specification references.
Tennis String Gauge (String Diameter)
AWG in mm AWG Range mm Range 14 ~1,63 mm 13,75 – 14,24 1,58 mm – 1,68 mm 14L ~1,63 mm 14,25 – 14,74 1,49 […]
2015-01-25
0 local assets
Open resource
Tennis Saitendurchmesser
AWG in mm AWG Range mm Range 14 ~1,63 mm 13,75 – 14,24 1,58 mm – 1,68 mm 14L ~1,63 mm 14,25 – 14,74 1,49 mm – 1,58 mm 15 ~1,45 mm 14,75 – 15,24 1,41 mm – 1,49 mm 15L ~1,45 mm 15,25 – 15,74 1,33 mm – 1,41 mm 16 ~1,29 mm 15,75 – 16,24 1,26 mm – 1,32 mm 16L ~1,22
2015-01-25
1 local assets
Open resource
Tennis Kopfgröße
Bei den Tennisschlägern wird eigentlich immer die Kopfgröße mit angegeben. Manchmal in Inch oder auch in Centimetern. Hier gibt es eine kleine Übersicht von den […]
2015-01-05
0 local assets
Open resource
Tennis Griffgröße
Die Griffstärken in Inch, bzw Millimeter umgerechnet
2015-01-05
0 local assets
Open resource
Badminton Griffgröße
Viele Hersteller geben die Griffgröße mit G und einer Zahl an. Leider ist das von Hersteller zu Hersteller unterschiedlich.
2014-11-02
0 local assets
Open resource
Tools, fixtures, and 3D printing
DIY tools, swingweight devices, 3D printed accessories, and fabrication references.
ERSA – 3D Printing Presentation
Click on the image below to download the presentation:
2025-10-07
5 local assets
Open resource
New modified disk and nut for the Stringlab 2
Todo
2025-06-11
0 local assets
Open resource
Crazy-Mini – The DIY Swingweight Device
Introduction Some time ago on saitenforum.de there was a construction manual, including source code, for a device that can measure swingweight. Developed and published by Crazydoc, it was called the Crazy-Mini . The required parts were inexpensive, and with a
2024-03-18
8 local assets
Open resource
Badminton String Reel Holder
Unfortunately, the storage boxes in which I keep my strings are no longer sold in Germany. I looked for alternatives, but couldn’t find anything reasonable, […]
2024-02-21
11 local assets
Open resource