diff --git a/OpenRA.Mods.Cnc/WithRoof.cs b/OpenRA.Mods.Cnc/WithRoof.cs
index abe7d3bbb5..5e9b6e8e1c 100644
--- a/OpenRA.Mods.Cnc/WithRoof.cs
+++ b/OpenRA.Mods.Cnc/WithRoof.cs
@@ -15,12 +15,12 @@ using OpenRA.Graphics;
 
 namespace OpenRA.Mods.Cnc
 {
-	class WithRoofInfo : ITraitInfo
+	public class WithRoofInfo : ITraitInfo, ITraitPrerequisite<RenderSimpleInfo>
 	{
 		public object Create(ActorInitializer init) { return new WithRoof(init.self); }
 	}
 
-	class WithRoof
+	public class WithRoof
 	{
 		public WithRoof(Actor self)
 		{
diff --git a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
index 3629dd4a30..17f00e1283 100644
--- a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
+++ b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="3.5" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -221,7 +221,6 @@
     <Compile Include="Render\RenderFlare.cs" />
     <Compile Include="Render\RenderInfantry.cs" />
     <Compile Include="Render\RenderUnitReload.cs" />
-    <Compile Include="Render\RenderUnitRotor.cs" />
     <Compile Include="Render\RenderUnitSpinner.cs" />
     <Compile Include="Repairable.cs" />
     <Compile Include="RepairsUnits.cs" />
@@ -267,8 +266,6 @@
     <Compile Include="Widgets\StrategicProgressWidget.cs" />
     <Compile Include="Widgets\WorldCommandWidget.cs" />
     <Compile Include="Widgets\WorldTooltipWidget.cs" />
-    <Compile Include="WithMuzzleFlash.cs" />
-    <Compile Include="WithShadow.cs" />
     <Compile Include="NukePaletteEffect.cs" />
     <Compile Include="GainsExperience.cs" />
     <Compile Include="GivesExperience.cs" />
@@ -333,6 +330,9 @@
     <Compile Include="Widgets\SidebarButtonWidget.cs" />
     <Compile Include="Widgets\RadarWidget.cs" />
     <Compile Include="ActorExts.cs" />
+    <Compile Include="Render\WithRotor.cs" />
+    <Compile Include="Render\WithMuzzleFlash.cs" />
+    <Compile Include="Render\WithShadow.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenRA.FileFormats\OpenRA.FileFormats.csproj">
diff --git a/OpenRA.Mods.RA/Render/RenderUnitRotor.cs b/OpenRA.Mods.RA/Render/RenderUnitRotor.cs
deleted file mode 100755
index 67babdd36d..0000000000
--- a/OpenRA.Mods.RA/Render/RenderUnitRotor.cs
+++ /dev/null
@@ -1,64 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made 
- * available to you under the terms of the GNU General Public License
- * as published by the Free Software Foundation. For more information,
- * see COPYING.
- */
-#endregion
-
-using OpenRA.Graphics;
-using OpenRA.Traits;
-
-namespace OpenRA.Mods.RA.Render
-{
-	class RenderUnitRotorInfo : RenderUnitInfo
-	{
-		public readonly int[] PrimaryOffset = { 0, 0 };
-		public readonly int[] SecondaryOffset = null;
-
-		public override object Create(ActorInitializer init) { return new RenderUnitRotor(init.self); }
-	}
-
-	class RenderUnitRotor : RenderUnit
-	{
-		public Animation rotorAnim, secondRotorAnim;
-
-		public RenderUnitRotor( Actor self )
-			: base(self)
-		{
-			var facing = self.Trait<IFacing>();
-			var info = self.Info.Traits.Get<RenderUnitRotorInfo>();
-
-			rotorAnim = new Animation(GetImage(self));
-			rotorAnim.PlayRepeating("rotor");
-			anims.Add("rotor_1", new AnimationWithOffset(
-				rotorAnim,
-				() => Combat.GetTurretPosition( self, facing, new Turret(info.PrimaryOffset)),
-				null ) { ZOffset = 1 } );
-
-			if (info.SecondaryOffset == null) return;
-
-			secondRotorAnim = new Animation(GetImage(self));
-			secondRotorAnim.PlayRepeating("rotor2");
-			anims.Add("rotor_2", new AnimationWithOffset(
-				secondRotorAnim,
-				() => Combat.GetTurretPosition(self, facing, new Turret(info.SecondaryOffset)),
-				null) { ZOffset = 1 });
-		}
-
-		public override void Tick(Actor self)
-		{
-			base.Tick(self);
-
-			var isFlying = self.Trait<IMove>().Altitude > 0 && !self.IsDead();
-			if (isFlying ^ (rotorAnim.CurrentSequence.Name != "rotor")) 
-				return;
-
-			rotorAnim.ReplaceAnim(isFlying ? "rotor" : "slow-rotor");
-			if (secondRotorAnim != null)
-				secondRotorAnim.ReplaceAnim(isFlying ? "rotor2" : "slow-rotor2");
-		}
-	}
-}
diff --git a/OpenRA.Mods.RA/WithMuzzleFlash.cs b/OpenRA.Mods.RA/Render/WithMuzzleFlash.cs
similarity index 97%
rename from OpenRA.Mods.RA/WithMuzzleFlash.cs
rename to OpenRA.Mods.RA/Render/WithMuzzleFlash.cs
index 3247538b0b..cfb2c87870 100644
--- a/OpenRA.Mods.RA/WithMuzzleFlash.cs
+++ b/OpenRA.Mods.RA/Render/WithMuzzleFlash.cs
@@ -12,7 +12,7 @@ using System.Collections.Generic;
 using OpenRA.Graphics;
 using OpenRA.Traits;
 
-namespace OpenRA.Mods.RA
+namespace OpenRA.Mods.RA.Render
 {
 	class WithMuzzleFlashInfo : ITraitInfo, ITraitPrerequisite<RenderSimpleInfo>
 	{
diff --git a/OpenRA.Mods.RA/Render/WithRotor.cs b/OpenRA.Mods.RA/Render/WithRotor.cs
new file mode 100755
index 0000000000..e22e59947a
--- /dev/null
+++ b/OpenRA.Mods.RA/Render/WithRotor.cs
@@ -0,0 +1,48 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made 
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Render
+{
+	public class WithRotorInfo : ITraitInfo
+	{
+		public readonly string Id = "rotor";
+		public readonly int[] Offset = { 0, 0 };
+		public object Create(ActorInitializer init) { return new WithRotor(init.self, this); }
+	}
+
+	public class WithRotor : ITick
+	{
+		public Animation rotorAnim;
+		public WithRotor(Actor self, WithRotorInfo info)
+		{
+			var rs = self.Trait<RenderSimple>();
+			var facing = self.Trait<IFacing>();
+
+			rotorAnim = new Animation(rs.GetImage(self));
+			rotorAnim.PlayRepeating("rotor");
+			rs.anims.Add(info.Id, new RenderSimple.AnimationWithOffset(
+				rotorAnim,
+				() => Combat.GetTurretPosition( self, facing, new Turret(info.Offset)),
+				null ) { ZOffset = 1 } );
+		}
+
+		public void Tick(Actor self)
+		{
+			var isFlying = self.Trait<IMove>().Altitude > 0 && !self.IsDead();
+			if (isFlying ^ (rotorAnim.CurrentSequence.Name != "rotor")) 
+				return;
+
+			rotorAnim.ReplaceAnim(isFlying ? "rotor" : "slow-rotor");
+		}
+	}
+}
diff --git a/OpenRA.Mods.RA/WithShadow.cs b/OpenRA.Mods.RA/Render/WithShadow.cs
similarity index 96%
rename from OpenRA.Mods.RA/WithShadow.cs
rename to OpenRA.Mods.RA/Render/WithShadow.cs
index 6a37e80865..2c43b9e27a 100644
--- a/OpenRA.Mods.RA/WithShadow.cs
+++ b/OpenRA.Mods.RA/Render/WithShadow.cs
@@ -12,7 +12,7 @@ using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Traits;
 
-namespace OpenRA.Mods.RA
+namespace OpenRA.Mods.RA.Render
 {
 	class WithShadowInfo : TraitInfo<WithShadow> {}
 
diff --git a/mods/cnc/rules/vehicles.yaml b/mods/cnc/rules/vehicles.yaml
index e83fa6d344..37d1a80f16 100644
--- a/mods/cnc/rules/vehicles.yaml
+++ b/mods/cnc/rules/vehicles.yaml
@@ -473,9 +473,12 @@ TRAN:
 		Type: Light
 	RevealsShroud:
 		Range: 8
-	RenderUnitRotor:
-		PrimaryOffset: 0,14,0,-4
-		SecondaryOffset: 0,-14,0,-2
+	RenderUnit:
+	WithRotor@PRIMARY:
+		Offset: 0,14,0,-4
+	WithRotor@SECONDARY:
+		Id: rotor_2
+		Offset: 0,-14,0,-2
 	WithShadow:
 	Cargo:
 		Types: Infantry
@@ -508,9 +511,10 @@ HELI:
 		PrimaryWeapon: HighV.Heli
 		PrimaryOffset: 0,-10,0,3
 		FacingTolerance: 20
+	RenderUnit:
+	WithRotor:
+		Offset: 0,0,0,-2
 	WithMuzzleFlash:
-	RenderUnitRotor:
-		PrimaryOffset: 0,0,0,-2
 	WithShadow:
 	FallsToEarth:
 	AutoTarget:
diff --git a/mods/ra/rules/vehicles.yaml b/mods/ra/rules/vehicles.yaml
index a713e9a252..8416ad7afc 100644
--- a/mods/ra/rules/vehicles.yaml
+++ b/mods/ra/rules/vehicles.yaml
@@ -830,9 +830,12 @@ TRAN:
 		ROT: 5
 		Speed: 12
 		LandableTerrainTypes: Clear,Rough,Road,Ore,Beach
-	RenderUnitRotor:
-		PrimaryOffset: 0,14,0,-8
-		SecondaryOffset: 0,-14,0,-5
+	RenderUnit:
+	WithRotor@PRIMARY:
+		Offset: 0,14,0,-8
+	WithRotor@SECONDARY:
+		Id: rotor_2
+		Offset: 0,-14,0,-5
 	WithShadow:
 	Cargo:
 		Types: Infantry
@@ -872,9 +875,10 @@ HELI:
 		InitialFacing: 20
 		ROT: 4
 		Speed: 16
-	RenderUnitRotor:
-		PrimaryOffset: 0,0,0,-2
+	RenderUnit:
 		Smokes: no
+	WithRotor:
+		Offset: 0,0,0,-2
 	WithShadow:
 	LimitedAmmo:
 		Ammo: 8
@@ -915,8 +919,9 @@ HIND:
 		InitialFacing: 20
 		ROT: 4
 		Speed: 12
-	RenderUnitRotor:
+	RenderUnit:
 		Smokes: no
+	WithRotor:
 	WithShadow:
 	LimitedAmmo:
 		Ammo: 24