Head to head

Gamma IO Soft 16 (1.28) vs Gamma Moto Soft 16 (1.29)

Moto Soft 16 (1.29) leads on 3 of 6 measurements. The widest gap is ball bite, where Moto Soft 16 (1.29) is 56 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Gamma

IO Soft 16 (1.28)

Polyester · 16 ga

Gamma

Moto Soft 16 (1.29)

Polyester · 16 ga

Stiffness lower = softer, kinder on the arm
20068th pct
20068th pct
Tension loss lower = stays where you strung it
3455th pct
3150th pct
Energy return higher = livelier, more free power
8955th pct
8846th pct
Spin potential higher = more spin off the string bed
6.180th pct
6.485th pct
Ball bite higher = grabs the ball harder
0.41936th pct
0.56792nd pct
String friction lower = strings slide and snap back
0.0694th pct
0.08842nd pct

Bars are percentile against all 791 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.

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.

Coming from IO Soft 16 (1.28) at 52 lb

String Moto Soft 16 (1.29) at 52.0 lb 23.6 kg

Coming from Moto Soft 16 (1.29) at 52 lb

String IO Soft 16 (1.28) at 52.0 lb 23.6 kg

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.

IO Soft 16 (1.28) mains / Moto Soft 16 (1.29) crosses

Stiffness68th pct · 1 measured
Tension loss53rd pct · 1 measured
Energy return53rd pct · 1 measured
Spin potential81st pct · 1 measured
Ball bite50th pct · 1 measured
String friction10th pct · 1 measured

Moto Soft 16 (1.29) mains / IO Soft 16 (1.28) crosses

Stiffness68th pct · 1 measured
Tension loss52nd pct · 1 measured
Energy return49th pct · 1 measured
Spin potential84th pct · 1 measured
Ball bite90th pct · 1 measured
String friction32nd pct · 1 measured

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.

IO Soft 16 (1.28)

~23 hours of play

Moto Soft 16 (1.29)

~25 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Gamma IO Soft 16 (1.28) Polyester16find20034896.10.4190.069
Gamma Moto Soft 16 (1.29) Polyester16find20031886.40.5670.088

Add a third string IO Soft 16 (1.28) in full Moto Soft 16 (1.29) in full