diff --git a/Aircraft/c172-yasim-set.xml b/Aircraft/c172-yasim-set.xml
index bf2f5367b..85feb2c95 100644
--- a/Aircraft/c172-yasim-set.xml
+++ b/Aircraft/c172-yasim-set.xml
@@ -30,6 +30,10 @@ October 23 2001 John Check, fgpanels@rockfish.net
    <path>Aircraft/c172/Models/N757/n757.ac</path>
   </model>
  </sim>
+
+ <controls>
+  <magnetos>true</magnetos>
+ </controls>
   
  <autopilot>
    <config>
diff --git a/Aircraft/c310-yasim-set.xml b/Aircraft/c310-yasim-set.xml
index afb39736c..a6a27213f 100644
--- a/Aircraft/c310-yasim-set.xml
+++ b/Aircraft/c310-yasim-set.xml
@@ -30,6 +30,12 @@ October 23 2001 John Check, fgpanels@rockfish.net
    <path>Aircraft/c310/Models/cessna310r.ac</path>
   </model> 
  </sim>
+
+ <controls>
+  <magnetos n="0">3</magnetos>
+  <magnetos n="1">3</magnetos>
+ </controls>
+
 </PropertyList>
 
 
diff --git a/Aircraft/dc3-yasim-set.xml b/Aircraft/dc3-yasim-set.xml
index 98faa9b9e..c1fc7164a 100644
--- a/Aircraft/dc3-yasim-set.xml
+++ b/Aircraft/dc3-yasim-set.xml
@@ -32,6 +32,11 @@ October 23 2001 John Check, fgpanels@rockfish.net
   </model> 
  </sim>
 
+ <controls>
+  <magnetos n="0">3</magnetos>
+  <magnetos n="1">3</magnetos>
+ </controls>
+
  <autopilot>
    <config>
      <min-climb-speed-kt type="float">100.0</min-climb-speed-kt>