diff --git a/lib/src/main/java/org/fairportrobotics/frc/robolib/trajectory/ballistics/constraints/RobotLauncherVelBC.java b/lib/src/main/java/org/fairportrobotics/frc/robolib/trajectory/ballistics/constraints/RobotLauncherVelBC.java
index 6f10744..0bdb16d 100644
--- a/lib/src/main/java/org/fairportrobotics/frc/robolib/trajectory/ballistics/constraints/RobotLauncherVelBC.java
+++ b/lib/src/main/java/org/fairportrobotics/frc/robolib/trajectory/ballistics/constraints/RobotLauncherVelBC.java
@@ -104,7 +104,7 @@ public class RobotLauncherVelBC extends BallisticConstraint {
         try {
             velocityWeight = this.getPartialWeight(
                 minVelocityMPS, maxVelocityMPS, targetVelocityPercent,
-                evalParams.getCandidateShooterVelocityRelative().getSphericalVelocity().in(Units.MetersPerSecond)
+                evalParams.getCandidateShooterVelocityRelative().getSpeed().in(Units.MetersPerSecond)
             );
             azimuthWeight = this.getPartialWeight(
                 minAzimuthDegrees, maxAzimuthDegrees, targetAzimuthPercent,
diff --git a/lib/src/test/java/org/fairportrobotics/frc/robolib/trajectory/ballistics/constraints/RobotLauncherVelBCTest.java b/lib/src/test/java/org/fairportrobotics/frc/robolib/trajectory/ballistics/constraints/RobotLauncherVelBCTest.java
new file mode 100644
index 0000000..9c6dcba
--- /dev/null
+++ b/lib/src/test/java/org/fairportrobotics/frc/robolib/trajectory/ballistics/constraints/RobotLauncherVelBCTest.java
@@ -0,0 +1,241 @@
+package org.fairportrobotics.frc.robolib.trajectory.ballistics.constraints;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import org.fairportrobotics.frc.robolib.trajectory.Velocity3d;
+import org.fairportrobotics.frc.robolib.trajectory.ballistics.models.ConstantBM;
+
+import edu.wpi.first.units.Units;
+
+import org.junit.jupiter.api.Test;
+
+public class RobotLauncherVelBCTest extends BallisticConstraintTest<RobotLauncherVelBC> {
+
+    private enum DegreeOfFreedom {
+        SPEED,
+        ELEVATION,
+        AZIMUTH;
+
+        public String prettyName() {
+            switch(this) {
+                case SPEED:
+                    return "Speed";
+                case ELEVATION:
+                    return "Elevation";
+                case AZIMUTH:
+                    return "Azimuth";
+                default:
+                    return this.name();
+            }
+        }
+    };
+
+    private enum ParamCategory {
+        LOW_OOB,
+        LOW_FAR,
+        LOW_MID,
+        LOW_NEAR,
+        HIGH_NEAR,
+        HIGH_MID,
+        HIGH_FAR,
+        HIGH_OOB;
+
+        public boolean isValid() {
+            return this != LOW_OOB && this != HIGH_OOB;
+        }
+
+        public boolean isLow() {
+            return  this == LOW_OOB ||
+                    this == LOW_FAR ||
+                    this == LOW_MID ||
+                    this == LOW_NEAR;
+        }
+
+        public Double expectedValue() {
+            switch (this) {
+                case LOW_OOB:
+                case HIGH_OOB:
+                    return null;
+                case LOW_NEAR:
+                case HIGH_NEAR:
+                    return 0.0;
+                case LOW_MID:
+                case HIGH_MID:
+                    return 0.5;
+                case LOW_FAR:
+                case HIGH_FAR:
+                    return 1.0;
+                default:
+                    return null;
+            }
+        }
+
+        public String rangeString() {
+            switch (this) {
+                case LOW_OOB:
+                case HIGH_OOB:
+                    return "Out of Bounds";
+                case LOW_NEAR:
+                case HIGH_NEAR:
+                    return "Near";
+                case LOW_MID:
+                case HIGH_MID:
+                    return "Mid";
+                case LOW_FAR:
+                case HIGH_FAR:
+                    return "Far";
+                default:
+                    return "Unknown (" + this.name() + ")";
+            }
+        }
+    };
+
+    //
+    //  Param generator functions
+    //
+
+    private static TestConstraintEvalParams<RobotLauncherVelBC> mkParams(
+        String name,
+        Velocity3d candidateShooterRelativeVelocity,
+        Double result
+    ) {
+        return mkParams(
+            name,
+            candidateShooterRelativeVelocity,
+            new RobotLauncherVelBC(
+                Units.MetersPerSecond.of(0.0), Units.MetersPerSecond.of(4.0), 0.5,
+                Units.Degrees.of(-90), Units.Degrees.of(90), 0.5,
+                Units.Degrees.of(0), Units.Degrees.of(80), 0.5
+            ),
+            result
+        );
+    }
+
+    private static TestConstraintEvalParams<RobotLauncherVelBC> mkParams(
+        String name,
+        Velocity3d candidateShooterRelativeVelocity,
+        RobotLauncherVelBC constraint,
+        Double result
+    ) {
+        return new TestConstraintEvalParams<RobotLauncherVelBC>(
+            name,
+            new ConstantBM(),
+            BCEvalParams.genSetShooterRelativeVelocity(candidateShooterRelativeVelocity),
+            constraint,
+            result
+        );
+    }
+
+    private static List<TestConstraintEvalParams<RobotLauncherVelBC>> mkSingleDOFParams(DegreeOfFreedom dof) {
+        // Get the maps of outputs
+        Map<ParamCategory, Double> speedMap     = new HashMap<>();
+        Map<ParamCategory, Double> elevationMap = new HashMap<>();
+        Map<ParamCategory, Double> azimuthMap   = new HashMap<>();
+
+        switch (dof) {
+            case SPEED:
+                speedMap = Map.of(
+                    ParamCategory.LOW_OOB, -1.0,
+                    ParamCategory.LOW_FAR, 0.0,
+                    ParamCategory.LOW_MID, 0.5,
+                    ParamCategory.LOW_NEAR, 1.0,
+                    ParamCategory.HIGH_NEAR, 3.0,
+                    ParamCategory.HIGH_MID, 3.5,
+                    ParamCategory.HIGH_FAR, 4.0,
+                    ParamCategory.HIGH_OOB, 5.0
+                );
+                break;
+            case ELEVATION:
+                elevationMap = Map.of(
+                    ParamCategory.LOW_OOB, -10.0,
+                    ParamCategory.LOW_FAR, 0.0,
+                    ParamCategory.LOW_MID, 10.0,
+                    ParamCategory.LOW_NEAR, 20.0,
+                    ParamCategory.HIGH_NEAR, 60.0,
+                    ParamCategory.HIGH_MID, 70.0,
+                    ParamCategory.HIGH_FAR, 80.0,
+                    ParamCategory.HIGH_OOB, 90.0
+                );
+            case AZIMUTH:
+                azimuthMap = Map.of(
+                    ParamCategory.LOW_OOB, -135.0,
+                    ParamCategory.LOW_FAR, -90.0,
+                    ParamCategory.LOW_MID, -67.5,
+                    ParamCategory.LOW_NEAR, -45.0,
+                    ParamCategory.HIGH_NEAR, 45.0,
+                    ParamCategory.HIGH_MID, 67.5,
+                    ParamCategory.HIGH_FAR, 90.0,
+                    ParamCategory.HIGH_OOB, 135.0
+                );
+        }
+
+        // Generate the test params
+        List<TestConstraintEvalParams<RobotLauncherVelBC>> toRet = new LinkedList<>();
+        for (ParamCategory category : ParamCategory.values()) {
+            String testName =
+                ((category.isValid()) ? "Pass" : "Fail") + " (" +
+                ((category.isLow()) ? "Low" : "High") + " " + (dof.prettyName()) +
+                ", " + category.rangeString() + ")";
+            Velocity3d velocity = Velocity3d.genSpherical(
+                speedMap.getOrDefault(category, 2.0),
+                elevationMap.getOrDefault(category, 45.0),
+                azimuthMap.getOrDefault(category, 0.0)
+            );
+
+            TestConstraintEvalParams<RobotLauncherVelBC>  testParams = 
+                mkParams(testName, velocity, category.expectedValue());
+
+            toRet.add(testParams);
+        }
+        return toRet;
+    }
+
+    //
+    //  Tests
+    //
+
+    @Test void testIdeal() {
+        this.testConstraintEval(List.of(
+            mkParams(
+                "Pass (Ideal)",
+                Velocity3d.genSpherical(2.0, 45, 0),
+                0.0
+            )
+        ));
+    }
+
+    @Test void testSpeed() {
+        this.testConstraintEval(mkSingleDOFParams(DegreeOfFreedom.SPEED));
+    }
+
+    @Test void testElevation() {
+        this.testConstraintEval(mkSingleDOFParams(DegreeOfFreedom.ELEVATION));
+    }
+
+    @Test void testAzimuth() {
+        this.testConstraintEval(mkSingleDOFParams(DegreeOfFreedom.AZIMUTH));
+    }
+
+    @Test void testMultiFail() {
+        this.testConstraintEval(List.of(
+            mkParams(
+                "Multi-Fail, Tie, Extreme",
+                Velocity3d.genSpherical(4, 80, 0),
+                1.0
+            ),
+            mkParams(
+                "Multi-Fail, Tie, Mid",
+                Velocity3d.genSpherical(3.5, 40, 0),
+                0.5
+            ),
+            mkParams(
+                "Multi-Fail, non-tie",
+                Velocity3d.genSpherical(4, 40, 0),
+                1.0
+            )
+        ));
+    }
+}