diff --git a/js/neuron/view/NeuronScreenView.js b/js/neuron/view/NeuronScreenView.js
index bd17d53..ba0cd41 100644
--- a/js/neuron/view/NeuronScreenView.js
+++ b/js/neuron/view/NeuronScreenView.js
@@ -253,7 +253,6 @@ function NeuronScreenView( neuronClockModelAdapter ) {
       yMargin: 6
     },
     speedRadioButtonGroupOptions: {
-      radioButtonOptions: { radius: 8 },
       spacing: 8,
       touchAreaXDilation: 5
     },
@@ -318,13 +317,6 @@ function NeuronScreenView( neuronClockModelAdapter ) {
     concentrationReadoutLayerNode.visible = concentrationVisible;
   } );
 
-  // const simSpeedControlPanel = new SimSpeedControlPanel( neuronClockModelAdapter.speedProperty, {
-  //   left: this.layoutBounds.minX + leftPadding,
-  //   centerY: centerYForLowerControls,
-  //   maxWidth: 250 // empirically determined
-  // } );
-  // this.addChild( simSpeedControlPanel );
-
   const zoomControl = new ZoomControl( zoomProperty, MIN_ZOOM, MAX_ZOOM );
   this.addChild( zoomControl );
   zoomControl.top = clipAreaBounds.y;
diff --git a/js/neuron/view/controlpanel/SimSpeedControlPanel.js b/js/neuron/view/controlpanel/SimSpeedControlPanel.js
deleted file mode 100644
index 8740e15..0000000
--- a/js/neuron/view/controlpanel/SimSpeedControlPanel.js
+++ /dev/null
@@ -1,55 +0,0 @@
-// Copyright 2014-2020, University of Colorado Boulder
-
-/**
- * Control panel for choosing the sim speed
- *
- * @author John Blanco
- * @author Sharfudeen Ashraf (for Ghent University)
- */
-
-import inherit from '../../../../../phet-core/js/inherit.js';
-import merge from '../../../../../phet-core/js/merge.js';
-import Text from '../../../../../scenery/js/nodes/Text.js';
-import Panel from '../../../../../sun/js/Panel.js';
-import VerticalAquaRadioButtonGroup from '../../../../../sun/js/VerticalAquaRadioButtonGroup.js';
-import neuronStrings from '../../../neuron-strings.js';
-import neuron from '../../../neuron.js';
-import NeuronConstants from '../../common/NeuronConstants.js';
-
-// strings - labels for speed radio buttons
-const fastForwardString = neuronStrings.fastForward;
-const normalString = neuronStrings.normal;
-const slowMotionString = neuronStrings.slowMotion;
-
-/**
- * @param {Property.<number>} speedProperty
- * @param {Object} [options]
- * @constructor
- */
-function SimSpeedControlPanel( speedProperty, options ) {
-
-  options = merge( {
-    fill: NeuronConstants.CONTROL_PANEL_BACKGROUND,
-    stroke: NeuronConstants.CONTROL_PANEL_STROKE,
-    xMargin: 8,
-    yMargin: 6
-  }, options );
-
-  const radioButtonFont = NeuronConstants.CONTROL_PANEL_CONTROL_FONT;
-  const speedRadioButtonGroup = new VerticalAquaRadioButtonGroup( speedProperty, [
-    { node: new Text( fastForwardString, { font: radioButtonFont } ), value: 2 },
-    { node: new Text( normalString, { font: radioButtonFont } ), value: 1 },
-    { node: new Text( slowMotionString, { font: radioButtonFont } ), value: 0.5 }
-  ], {
-    radioButtonOptions: { radius: 8 },
-    spacing: 8,
-    touchAreaXDilation: 5
-  } );
-
-  Panel.call( this, speedRadioButtonGroup, options );
-}
-
-neuron.register( 'SimSpeedControlPanel', SimSpeedControlPanel );
-
-inherit( Panel, SimSpeedControlPanel );
-export default SimSpeedControlPanel;
\ No newline at end of file