Pacific X Force 17 vs Signum Pro Poly Speed Spin 1.28

Measured, side by side

Bars are percentile against all 788 strings, and the marked side is the one that measures better, which is not always the one you want. A firmer bed is worse for your elbow and better for your control, and no measurement knows which of those you came for.

Which one wins, by problem

Each string's standing on the site's rankings, out of every measured string in the database. This is where a comparison stops being arithmetic and starts being a decision.

• More spin and shape

  X Force 17431st

  Poly Speed Spin 1.28417th

• Easier on my arm

  X Force 17737th

  Poly Speed Spin 1.28779th

• More control, less launch

  X Force 1752nd

  Poly Speed Spin 1.288th

• More power and depth

  X Force 17724th

  Poly Speed Spin 1.28770th

• Plays the same for longer

  X Force 17494th

  Poly Speed Spin 1.28553rd

• Lasts longer before it breaks

  X Force 17203rd

  Poly Speed Spin 1.28443rd

• Best feel and touch

  X Force 17707th

  Poly Speed Spin 1.28765th

Swapping between them: what tension?

Bed stiffness is published at one reference tension, so the only honest conversion is to scale it. These are starting points from 52 lb, not prescriptions. The calculator takes your own tension.

Hybrid: what if you used both?

Estimated, not measured. No hybrid combination has been tested as a bed. These figures are the two strings' own lab measurements weighted by how much of the bed each one actually is. Treat them as a guide to which way a pairing moves, never as lab data.

Open this in the hybrid builder

Which goes dead first?

Estimated from tension loss, which is the only thing the database measures about ageing. This is when the bed stops playing the way you strung it, not when the string breaks.

Both strings in full

Add a third string X Force 17 in full Poly Speed Spin 1.28 in full