diff --git a/examples/noviceN04/Issues.txt b/examples/noviceN04/Issues.txt
index 5e102245bd54a13a98f14587afff3a0f73447543..f3e97d48261de84dbe9c499d2df38aac29f59cfb 100644
--- a/examples/noviceN04/Issues.txt
+++ b/examples/noviceN04/Issues.txt
@@ -21,12 +21,4 @@
 
  - vis attribute drawingStyle="wireframe" does not seem to work (w/ geoDisplay )
 
- - definition of rotations not intuitive - need clear documentation:
-    Rotation rot( 0, 0 , phi ) 
-    behaves differently  from RotationZ(phi)  !!??
- 
 
- - original G4VSensitiveDetector classes are not yet used in DD4hep port
-   => need to change DDG4/Geant4SensitiveDetector ....
-
-   -> exampleN04 does not yet work (crashes due to missing SDs)
diff --git a/examples/noviceN04/compact/geant4.xml b/examples/noviceN04/compact/geant4.xml
index edffb935ccf96125a714d5e85e657f3b63328076..a4a9a5d6869ab9ec638087cb4bf61adc084171c5 100644
--- a/examples/noviceN04/compact/geant4.xml
+++ b/examples/noviceN04/compact/geant4.xml
@@ -3,19 +3,19 @@
   <sensitive_detectors>
 
     <sd name="TrackerN04" 
-        type="Geant4Tracker" 
+        type="DD4hepExN04TrackerSD"
         ecut="1.0*keV" 
         verbose="true" 
         hit_aggregation="position">
     </sd>
     <sd name="CalorimeterN04" 
-        type="Geant4Calorimeter"
+        type="DD4hepExN04CalorimeterSD"
         ecut="0.5*keV" 
         verbose="true" 
         hit_aggregation="position">
     </sd>
-    <sd name="MuonN04"
-        type="Geant4Calorimeter"
+    <sd name="MuonN04"  
+        type="DD4hepExN04MuonSD"
         ecut="0.5*keV"
         verbose="true"
         hit_aggregation="position">
diff --git a/examples/noviceN04/run1.mac b/examples/noviceN04/run1.mac
index 69ba6a2e10580bcf4d8ac831cb2a39cd3e08702b..3117e3b8cf389d57c46ece8a5cccac404511af76 100644
--- a/examples/noviceN04/run1.mac
+++ b/examples/noviceN04/run1.mac
@@ -10,7 +10,7 @@
 #
 /run/verbose 0
 /event/verbose 0
-/tracking/verbose 1
+/tracking/verbose 0
 # 
 # muon 300 MeV to the direction (1.,0.,0.)
 # 3 events
diff --git a/examples/noviceN04/src/SDWrapper.cc b/examples/noviceN04/src/SDWrapper.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8c713d274301ef76d08262025f3582093ae9e4a9
--- /dev/null
+++ b/examples/noviceN04/src/SDWrapper.cc
@@ -0,0 +1,58 @@
+#include "DDG4/Factories.h"
+#include "DDG4/G4SDFactory.h"
+#include "DD4hep/LCDD.h"
+
+#include "ExN04CalorimeterSD.hh"
+#include "ExN04CalorimeterROGeometry.hh"
+#include "ExN04MuonSD.hh"
+#include "ExN04TrackerSD.hh"
+
+
+namespace DD4hep { namespace Simulation {
+    
+    
+    /** Factory class to create an instance of ExN04CalorimeterSD
+     */
+    class DD4hepExN04CalorimeterSD : public DD4hep::Simulation::G4SDFactory {
+    public:
+      virtual G4VSensitiveDetector* createSD(const std::string& name,  Geometry::LCDD& lcdd){
+	
+	G4String calorimeterSDname = "/mydet/calorimeter";
+	ExN04CalorimeterSD * calorimeterSD = new ExN04CalorimeterSD(calorimeterSDname);
+	G4String ROgeometryName = "CalorimeterROGeom";
+	G4VReadOutGeometry* calRO = new ExN04CalorimeterROGeometry(ROgeometryName);
+	calRO->BuildROGeometry();
+	calRO->SetName(ROgeometryName);
+	calorimeterSD->SetROgeometry(calRO);
+	return calorimeterSD ;
+      }
+    } ;
+    /** Factory class to create an instance of ExN04TrackerSD
+     */
+    class DD4hepExN04TrackerSD : public DD4hep::Simulation::G4SDFactory{
+    public:
+      virtual G4VSensitiveDetector* createSD(const std::string& name,  Geometry::LCDD& lcdd){
+	G4String trackerSDname = "/mydet/tracker";
+	return new ExN04TrackerSD(trackerSDname);
+      }
+    } ;
+
+    /** Factory class to create an instance of ExN04MuonSD
+     */
+    class DD4hepExN04MuonSD : public DD4hep::Simulation::G4SDFactory{
+    public:
+      virtual G4VSensitiveDetector* createSD(const std::string& name,  Geometry::LCDD& lcdd){
+	G4String muonSDname = "/mydet/muon";
+	return new ExN04MuonSD(muonSDname);
+      }
+    } ;
+    
+    
+  } 
+}    // End namespace DD4hep::Simulation
+
+DECLARE_G4SDFACTORY(DD4hepExN04CalorimeterSD)
+DECLARE_G4SDFACTORY(DD4hepExN04MuonSD)
+DECLARE_G4SDFACTORY(DD4hepExN04TrackerSD)
+
+