diff --git a/core/src/net/sf/openrocket/rocketcomponent/CenteringRing.java b/core/src/net/sf/openrocket/rocketcomponent/CenteringRing.java
index d7cf3eb81..be94964ec 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/CenteringRing.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/CenteringRing.java
@@ -7,7 +7,7 @@ import net.sf.openrocket.startup.Application;
 import net.sf.openrocket.util.Coordinate;
 
 
-public class CenteringRing extends RadiusRingComponent implements LineInstanceable {
+public class CenteringRing extends RadiusRingComponent {
 
 	public CenteringRing() {
 		setOuterRadiusAutomatic(true);
@@ -17,11 +17,7 @@ public class CenteringRing extends RadiusRingComponent implements LineInstanceab
 	
 	private static final Translator trans = Application.getTranslator();
 
-	protected int instanceCount = 1;
-	// front-front along the positive rocket axis. i.e. [1,0,0];
-	protected double instanceSeparation = 0; 
-   
-	
+
 	@Override
 	public double getInnerRadius() {
 		// Implement sibling inner radius automation
@@ -82,42 +78,5 @@ public class CenteringRing extends RadiusRingComponent implements LineInstanceab
 		return ComponentPreset.Type.CENTERING_RING;
 	}
 	
-	@Override
-	public double getInstanceSeparation(){
-		return this.instanceSeparation;
-	}
-	
-	@Override
-	public void setInstanceSeparation(final double _separation){
-		this.instanceSeparation = _separation;
-	}
-	
-	@Override
-	public void setInstanceCount( final int newCount ){
-		if( 0 < newCount ){
-			this.instanceCount = newCount;
-		}
-	}
-	
-	@Override
-	public Coordinate[] getInstanceOffsets(){
-		Coordinate[] toReturn = new Coordinate[this.getInstanceCount()];
-		for ( int index=0 ; index < this.getInstanceCount(); index++){
-			toReturn[index] = this.position.setX( this.position.x + index*this.instanceSeparation );
-		}
-		
-		return toReturn;
-	}
-	
-	
-	@Override
-	public int getInstanceCount(){
-		return this.instanceCount;
-	}
-	
-	@Override	
-	public String getPatternName(){
-		return (this.getInstanceCount() + "-Line");
-	}
 	
 }
diff --git a/core/src/net/sf/openrocket/rocketcomponent/RadiusRingComponent.java b/core/src/net/sf/openrocket/rocketcomponent/RadiusRingComponent.java
index d077f5616..0c0da4d19 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/RadiusRingComponent.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/RadiusRingComponent.java
@@ -9,11 +9,15 @@ import net.sf.openrocket.util.MathUtil;
  *
  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  */
-public abstract class RadiusRingComponent extends RingComponent implements Coaxial {
+public abstract class RadiusRingComponent extends RingComponent implements Coaxial, LineInstanceable  {
 
 	protected double outerRadius = 0;
 	protected double innerRadius = 0;
 
+	protected int instanceCount = 1;
+	// front-front along the positive rocket axis. i.e. [1,0,0];
+	protected double instanceSeparation = 0; 
+   
 	@Override
 	protected void loadFromPreset(ComponentPreset preset) {
 		super.loadFromPreset(preset);
@@ -96,4 +100,42 @@ public abstract class RadiusRingComponent extends RingComponent implements Coaxi
 		setInnerRadius(outer - thickness);
 	}
 
+
+	@Override
+	public double getInstanceSeparation(){
+		return this.instanceSeparation;
+	}
+	
+	@Override
+	public void setInstanceSeparation(final double _separation){
+		this.instanceSeparation = _separation;
+	}
+	
+	@Override
+	public void setInstanceCount( final int newCount ){
+		if( 0 < newCount ){
+			this.instanceCount = newCount;
+		}
+	}
+	
+	@Override
+	public Coordinate[] getInstanceOffsets(){
+		Coordinate[] toReturn = new Coordinate[this.getInstanceCount()];
+		for ( int index=0 ; index < this.getInstanceCount(); index++){
+			toReturn[index] = new Coordinate( index*this.instanceSeparation, 0, 0);
+		}
+		
+		return toReturn;
+	}
+
+	
+	@Override
+	public int getInstanceCount(){
+		return this.instanceCount;
+	}
+	
+	@Override	
+	public String getPatternName(){
+		return (this.getInstanceCount() + "-Line");
+	}
 }