GRAVITY TRICK · CALIBRATION
Tune the keepy-uppy engine.
Edits apply live to the embedded simulator. Save to persist them to Gravity Trick.
Live simulator
Tap the ball · adjust sliders · use Restart to reset the rally
Presets
active: Factory
Touch comparison
current vs factory
Predicted full-charge, centred touch per body part.
foot
metric
now
factory
Δ
apex (m)
3.31
3.31
0%
hang (s)
1.64
1.64
0%
launch vz
8.05
8.05
0%
vx retained
0.82
0.82
0%
backspin
7.8
7.8
0%
thigh
metric
now
factory
Δ
apex (m)
2.40
2.40
0%
hang (s)
1.40
1.40
0%
launch vz
6.86
6.86
0%
vx retained
0.62
0.62
0%
backspin
1.8
1.8
0%
chest
metric
now
factory
Δ
apex (m)
1.12
1.12
0%
hang (s)
0.96
0.96
0%
launch vz
4.69
4.69
0%
vx retained
0.52
0.52
0%
backspin
0.6
0.6
0%
head
metric
now
factory
Δ
apex (m)
2.20
2.20
0%
hang (s)
1.34
1.34
0%
launch vz
6.57
6.57
0%
vx retained
0.74
0.74
0%
backspin
4.4
4.4
0%
Delta chart (% vs factory)
Global engine
Gravity (m/s²)9.81
Air drag0.012
Spin decay/step0.992
Magnus0.55
Strength cap1.30
Clean-gain base0.55
Clean-gain span0.55
foot
apex ≈ 2.53 m
Power6.40
Cushion (vz)0.20
Cushion (vx)0.18
Lift bias0.70
Backspin from Y0.85
Sidespin from X0.70
Scuff scatter (rad)0.45
thigh
apex ≈ 1.54 m
Power5.00
Cushion (vz)0.40
Cushion (vx)0.38
Lift bias0.90
Backspin from Y0.25
Sidespin from X0.20
Scuff scatter (rad)0.30
chest
apex ≈ 0.99 m
Power4.00
Cushion (vz)0.55
Cushion (vx)0.48
Lift bias0.55
Backspin from Y0.10
Sidespin from X0.10
Scuff scatter (rad)0.22
head
apex ≈ 1.93 m
Power5.60
Cushion (vz)0.28
Cushion (vx)0.26
Lift bias0.55
Backspin from Y0.55
Sidespin from X0.45
Scuff scatter (rad)0.25