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My girlfriend is searching for a new racquet. Shes between clash v2, clash v2 pro and blade 98 v8. Which one would you suggest ?

@Juggernauts Contrary to the amazing products that Stringway makes, their SW calculator is plain and simply wrong. Discard the result, the math behind the calculator is 100% wrong.

Ok so I did some measurement on my current shoes and foot geometry: Arch type: Normal Arch Toe Box: Medium Heel retention: Mid to Low, i like it a bit slippery, I don't like the heels being locked in place but also don't want the heel to swim inside the shoe. Arch support: Current shoe...

Ever since I started tennis (around 2016) I was always using Nike Court Lite and buying them in bulk. I got no opinion on other shoes since that's all I've been wearing for the past four years. Nothing fancy, nothing bad. I liked how they never gave me any trouble or blisters. Sadly the line got...

https://i.pinimg.com/originals/de/cd/d3/decdd31fc947d00b7253809920207ccb.png It indeed looks that up to 15 degrees the curvature of cos is still not sharp which leaves a lot of room for neglecting the tension bar horizontal position with a loss of 5%. 5% at 20 kg is barelly 1 kg, not that...

Actually tennisbike is right, sorry for the wrong usage or radians instead of degrees. It seems the loss is very small at +- 10 degrees. I'll have to check that in detail later when I have time because it's a very very interesting finding. Makes this argument about horizontal tension arm sound...

+- 10 degrees from horizontal axis is about 20% tension drop. So if you put let's say 20 kg, if you deviate 10 degrees you will go down to 16 kg. The Stringway machines have minimized thise by using their automatic dropweight system but the tension loss is not zero as they claim. At a range of...

This is a personal opinion based on my findings when stringing one ahead. I'm a club player self-stringing, not a stringer. As per what I've read and what I have figured out myself, when stringing one cross ahead of the one being tensioned you: 1)Can weave faster and easier because the...

Oh funny side story. The first time we made our poles that fit the racquet, we didnt know that as you progress from R1 to R8 mains the tension on the frame and the poles supporting it accumulates. We used metalic water pipes cause we thought it would strain at max 30 kg. Once experimenting at...

You are right. The diablo drum indeed changes the leverage a bit depending on the angle. For angles around +- 20 degrees the tension difference is about 150 gr. It's a compromise sadly that had to be done. The thinner the diablo drum, the less this loss. But if we made the diablo drum very thin...

The vertical angle of the string entering the frame is 5.87 degrees. It was the minimum I could use in order for the racquet frame handle to be able to pass above the tensioner. To counter for the tension loss, we decreased the angle between the tension bar and the drum from 90 by 5.87. We run...

Some more details I didnt post earlier. The rotating parts (base of frame mount and dropweight base) are made out of used car parts, specifically the ball bearings of car wheels. There's two of them each of them cost 20 euro used from wreckage shop. The weight is 2.5kg of gym equipment that...

The diablo drum is used reduce the force of the string that reaches the gripper that's on the opposite side. I wasnt able to make a gripper like the one they have on the Stringway ML100. Mechanicly its the most difficult part to make. My gripper has just a spring that pushes two diamon dust...

Hi. Today I finished my second personal stringing machine as a DIY project. It's an automatic dropweight that combines the Wilson diablo drum and the Stringway automatic dropweight system, so I wanted to share my enthusiasm with the public. Feel free to ask any questions.

I was hoping Irwin would post a detailed explanation, I'm not good at step-by-step guides. But the bottom line is to measure the vibration frequency of a racquet, you don't need a setup worth 1000$ like TWU has done. A simple microphone and free software can get you the same results with same...

Well perhaps I didn't phrase it correctly, there's an option in Audacity where you can view the spectrum of the sound in finer detail so you can see at what vibration frequency most of the signal power resides.

So today I did a little experiment. I took a USB microphone that has an almost linear frequency responce around the 50 - 500Hz Hang my racquets from a string attached to the handle and hit the head at 12 spot with my fingernail. I recorded the sound of 4-5 hits. Imported the sound in Audacity...

I am indeed slow at stringing since I'm very new to this. So the tension loss could be due to the progressive loosening of the structure of the polyester over that long period. As for the tone of the string, I just have an ear for it, piano player here ;)

Indeed, strings with small elongation characteristics seem to suffer more as for them small length changes translates to greater tension differentials. Maybe why I'm seeing no bending is because I'm a low tension poly addict :P I usually string at 18 kg.

There's two effects that bring the tension of the mains back up: 1)Weaving causes the mains to stop being straight lines. Once the crosses get weaved they push the mains up and down so eventually the mains are no more straight lines. If you placed X amount of tension on a string when it was a...

Keep in mind that the amount of force the towers receive is not the sum of the tension placed on the racquet by the mains. A lot of this tension is transformed into compresison of the frame material and stored as dynamic energy on it. That's due to the egg shape of the racquet head.

Once again, I'm not comparing R1 to R8. I am comparing R1 to R1 at different points in time. When I first install R1 and ping it, it pings high. After I have completed all mains and ping again R1, it sounds low. That's tension loss when T to H distance stays the same after all 16 main...

I did some more tests today again. Towers don't move, or the bending is so small I can't measure it. Center string tension loss is not virtual. I ping the central main at start and I then ping the SAME string again after I reach R8. The tonality is lower between R1 at start and R1 at end of...

Interesting, I have not heard about it, well much anticipated actually hehe. Anyhow I'll look into it and study it in detail. On the meanwhile: http://www.sadev.com/wp-content/themes/sadevmain/timthumb.php?src=http://www.sadev.com/wp-content/uploads/2012/06/tirants.jpg&w=418&h=224&zc=1&q=100...

I'm fortunate to have started stringing since some months ago. I own both a Gamma X-2 and a self-made stringing machine. Both are flying-clamp compatible. I have three sets of them, the Gamma, the Double+Triple Stringway and two Vice Grip ones I made by copying the Klippermate clamps design. So...

This is complete garbage, who allows those guys to post on youtube? This is why I've been mad at some topics in this forum. For someone just starting in this world like me, there's SO much wrong information around, that the most probable outcome is that he will follow the wrong path. My...

My first one was some months ago. Applied tension was 19 kg, the racquet came out at 14 kg ... enough said :P Stringing time was about an hour.

Uhm total work hours from conception to implementation I'd say two people, 15 days, about 4 hours a day. Quite some time. But most of it was due to mistakes we did and once we started stringing racquets and they became obvious, we had to rebuild some parts from scratch to fix them. Actually a...

Dropweight tension loss problems There are two problems with the weights but we didnt figure out early sadly and they only became apparent during testing of the machine. First, lifting over 20 kg of weight by hand is kinda difficult, so we crated a foot-powered lever with enough length to...

This is what I use to self-string my racquets. The Vice Grip flying clamps have been replaced by Stringway Double + Triple the last month. Built with the help of my father at his metalworks lab.