diff --git a/src/main/java/cam72cam/immersiverailroading/gui/overlay/Readouts.java b/src/main/java/cam72cam/immersiverailroading/gui/overlay/Readouts.java
index add52f74e..7d0c460d8 100644
--- a/src/main/java/cam72cam/immersiverailroading/gui/overlay/Readouts.java
+++ b/src/main/java/cam72cam/immersiverailroading/gui/overlay/Readouts.java
@@ -43,8 +43,11 @@ public float getValue(EntityRollingStock stock, float lever) {
             case LIQUID:
                 return stock instanceof FreightTank ? ((FreightTank) stock).getPercentLiquidFull() / 100f : 0;
             case SPEED:
-                return (float)Math.abs(((EntityMoveableRollingStock)stock).getCurrentSpeed().metric() /
-                    (stock instanceof Locomotive ? ((Locomotive) stock).getDefinition().getMaxSpeed(stock.gauge).metric() : 200));
+                double maxSpeed = (stock instanceof Locomotive ? ((Locomotive) stock).getDefinition().getMaxSpeed(stock.gauge).metric() : 0);
+                if (maxSpeed == 0) {
+                    maxSpeed = 200;
+                }
+                return (float)Math.abs(((EntityMoveableRollingStock)stock).getCurrentSpeed().metric() / maxSpeed);
             case TEMPERATURE:
                 if (stock instanceof LocomotiveSteam) {
                     return ((LocomotiveSteam) stock).getBoilerTemperature() / 100f;
diff --git a/src/main/java/cam72cam/immersiverailroading/model/part/ValveGear.java b/src/main/java/cam72cam/immersiverailroading/model/part/ValveGear.java
index d8a761d0c..e7f3a71ea 100644
--- a/src/main/java/cam72cam/immersiverailroading/model/part/ValveGear.java
+++ b/src/main/java/cam72cam/immersiverailroading/model/part/ValveGear.java
@@ -233,6 +233,9 @@ public void update(Vec3d particlePos, boolean enteredStroke, boolean drain_enabl
 
                     double speed = Math.abs(stock.getCurrentSpeed().minecraft());
                     double maxSpeed = Math.abs(stock.getDefinition().getMaxSpeed(stock.gauge).minecraft());
+                    if (maxSpeed == 0) {
+                        maxSpeed = 200;
+                    }
                     float volume = (float) Math.max(1-speed/maxSpeed, 0.3) * Math.abs(stock.getThrottle() * stock.getReverser());
                     volume = (float) Math.sqrt(volume);
                     double fraction = 3;