diff --git a/Models/ballonet_manometer-1.xml b/Models/ballonet_manometer-1.xml
deleted file mode 100644
index 8b01d6c..0000000
--- a/Models/ballonet_manometer-1.xml
+++ /dev/null
@@ -1,52 +0,0 @@
-<!-- $Id$ -->
-<!--
-  Submarine Scout class airship.
-
-  Copyright (C) 2007 - 2008  Anders Gidenstam  (anders(at)gidenstam.org)
-  This file is licensed under the GPL license version 2 or later.
--->
-<PropertyList>
-
- <path>manometer.ac</path>
-
- <offsets>
-  <!-- x/y/z == back/right/up -->
-  <x-m> 0.00 </x-m>
-  <y-m> 0.00 </y-m>
-  <z-m> 0.00 </z-m>
- </offsets>
-
- <animation>
-  <type>scale</type>
-  <object-name>inner_liquid</object-name>
-  <property>fdm/jsbsim/instrumentation/ballonet-pressure-psf[0]</property>
-  <x-factor>0.0</x-factor>
-  <x-offset>1.0</x-offset>  
-  <y-factor>0.0</y-factor>
-  <y-offset>1.0</y-offset>  
-  <z-factor>0.23906</z-factor>
-  <z-offset>5.0</z-offset>  
-  <center>
-   <x-m>   0.00 </x-m>
-   <y-m>   0.00 </y-m>
-   <z-m>  -0.05 </z-m>
-  </center>
- </animation>
- <animation>
-  <type>scale</type>
-  <object-name>outer_liquid</object-name>
-  <property>fdm/jsbsim/instrumentation/ballonet-pressure-psf[0]</property>
-  <x-factor>0.0</x-factor>
-  <x-offset>1.0</x-offset>  
-  <y-factor>0.0</y-factor>
-  <y-offset>1.0</y-offset>  
-  <z-factor>-0.24902</z-factor>
-  <z-offset>5.0</z-offset>  
-  <center>
-   <x-m>   0.00 </x-m>
-   <y-m>   0.00 </y-m>
-   <z-m>  -0.05 </z-m>
-  </center>
- </animation>
-
-</PropertyList>
diff --git a/Models/ballonet_manometer-2.xml b/Models/ballonet_manometer-2.xml
deleted file mode 100644
index 6a890f5..0000000
--- a/Models/ballonet_manometer-2.xml
+++ /dev/null
@@ -1,62 +0,0 @@
-<!-- $Id$ -->
-<!--
-  Submarine Scout class airship.
-
-  Copyright (C) 2007 - 2008  Anders Gidenstam  (anders(at)gidenstam.org)
-  This file is licensed under the GPL license version 2 or later.
--->
-<PropertyList>
-
- <path>manometer.ac</path>
-
- <offsets>
-  <!-- x/y/z == back/right/up -->
-  <x-m> 0.00 </x-m>
-  <y-m> 0.00 </y-m>
-  <z-m> 0.00 </z-m>
- </offsets>
-
- <!--
-  %% Animation factors.
-  r1 = 0.007; % m
-  r2 = 0.005; % m
-  psf2Pa=47.880257;
-  m2cm = 100;
-  c_outer = 1/(1+(r1^2 - r2^2)/r2^2) / (1000*9.81) * psf2Pa * m2cm
-  c_inner = 1/(1+r2^2/(r1^2 - r2^2)) / (1000*9.81) * psf2Pa * m2cm
- -->
-
- <animation>
-  <type>scale</type>
-  <object-name>inner_liquid</object-name>
-  <property>fdm/jsbsim/instrumentation/ballonet-pressure-psf[1]</property>
-  <x-factor>0.0</x-factor>
-  <x-offset>1.0</x-offset>  
-  <y-factor>0.0</y-factor>
-  <y-offset>1.0</y-offset>  
-  <z-factor>0.23906</z-factor>
-  <z-offset>5.0</z-offset>  
-  <center>
-   <x-m>   0.00 </x-m>
-   <y-m>   0.00 </y-m>
-   <z-m>  -0.05 </z-m>
-  </center>
- </animation>
- <animation>
-  <type>scale</type>
-  <object-name>outer_liquid</object-name>
-  <property>fdm/jsbsim/instrumentation/ballonet-pressure-psf[1]</property>
-  <x-factor>0.0</x-factor>
-  <x-offset>1.0</x-offset>  
-  <y-factor>0.0</y-factor>
-  <y-offset>1.0</y-offset>  
-  <z-factor>-0.24902</z-factor>
-  <z-offset>5.0</z-offset>  
-  <center>
-   <x-m>   0.00 </x-m>
-   <y-m>   0.00 </y-m>
-   <z-m>  -0.05 </z-m>
-  </center>
- </animation>
-
-</PropertyList>