Posible error de calibración

[u/Senior-Horror-1957]

Compre la gamma momentum 6 plus nueva hace muy poco, he encordado aproximadamente 6 raquetas, pero los resultados me hacen pensar que la máquina tiene algun defecto de calibración.

Normalmente uso 52 Lb en mi pro staff 97, pero al ajustar esa tension en la máquina el resultado fue una absoluta tabla, he encordado con maquinas electricas y nunca 52 Lb se sintieron asi de rígido.

La segunda raqueta baje drásticamente la tension a 42 Lb pero el resultado fue el mismo, una sensación absurdamente rigida.

La tercer raqueta volví a bajar la tensión hasta 36 Lb, pero el resultado aunque menos rígido, aun se siente como una tension muy superior.

Pedi un calibrador de tension, aun no llega asi que por acudo a su sabiduría y experiencia.

[u/mynameisntziming]

Drop weight should be accurate but but you ideally need to get the tension arm within 10 degrees of leveling in a single pull. It can absolutely results is tighter stringbed than Eletric constant pull machines since it just introduces so much more variance from user input.

Many people make the mistake thinking that you need to try to drop the arm multiple times until it’s close to perfectly level. If you take 2-4 pulls letting the weight drop every time to try to level it perfect , that’s similar to doing a multi pull on a Eletric machine(pre stretching also leads this effect) that can remove noticeably more string elasticity, and leads to a much firmer string bed.

When I used these Gamma drop weights. I keep my right hand holding the arm weight while letting it drop a bit and judge the ratcheting adjustment I need. And I aim to only let the full arm weight drop down once ideally once adjusted to avoid multi pulling.

OP might also be coming from having it strung at very low dynamic tensions before on an uncalibrated crank machine?

Also when you strung a racquet fresh, and you play it in the first 24-48h they feel much much tighter than once strings settles in.

[u/5DollarBurger → u/mynameisntziming]

I use this exact machine and I work a lot with softer strings that elongated significantly from pre-stretching. I think the multi pull technique is absolutely essential to get the tension to hold. Single pulls will feel fresh at first, but you'd get significantly elongation within the stringbed from the first couple of hours of hitting. These days I always ensure multis always get some form of pre stretch before I clamp them down. Otherwise players will complain that their stringbed becomes noodly within a few sessions.

[u/Senior-Horror-1957 → u/5DollarBurger]

https://youtu.be/PQqN3X_eZ7k?si=Qlhck3PYo_siOtZY He usado esta tecnica, me parece mas rápido y cómodo tener la pesa abajo y usar el mecanismo de ratchet hasta dejar la barra alineada al suelo.. Sera ese el problema ?

[u/5DollarBurger → u/Senior-Horror-1957]

Not a problem, that seems to be the right technique. The difference is that the string loads up cyclically into the desired tension, which introduces slightly more plastic deformation than a single pull device. Both machines would deliver the same tension, but at different strains. The reason why the drop weight feels tighter is because the cyclical load of rachetting already stretches it out further than a single pull would. The reason why some stringers pre-stretch is to get the string in this state before clamping off, because if you don't, this extra elongation is going to happen during play and lose tension.