diff --git a/src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.cpp b/src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.cpp
index 8067de944..147beb4ae 100644
--- a/src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.cpp
+++ b/src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.cpp
@@ -36,11 +36,6 @@ SIMD_FORCE_INLINE btScalar computeAngularImpulseDenominator(const btVector3& axi
 }
 
 
-btConeTwistConstraint::btConeTwistConstraint()
-:btTypedConstraint(CONETWIST_CONSTRAINT_TYPE),
-m_useSolveConstraintObsolete(CONETWIST_USE_OBSOLETE_SOLVER)
-{
-}
 
 
 btConeTwistConstraint::btConeTwistConstraint(btRigidBody& rbA,btRigidBody& rbB, 
diff --git a/src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.h b/src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.h
index 1f7ff18d6..226bf030c 100644
--- a/src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.h
+++ b/src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.h
@@ -130,8 +130,6 @@ public:
 	
 	btConeTwistConstraint(btRigidBody& rbA,const btTransform& rbAFrame);
 
-	btConeTwistConstraint();
-
 	virtual void	buildJacobian();
 
 	virtual void getInfo1 (btConstraintInfo1* info);
diff --git a/src/BulletDynamics/ConstraintSolver/btContactConstraint.cpp b/src/BulletDynamics/ConstraintSolver/btContactConstraint.cpp
index 72116c6ba..409bf5ee8 100644
--- a/src/BulletDynamics/ConstraintSolver/btContactConstraint.cpp
+++ b/src/BulletDynamics/ConstraintSolver/btContactConstraint.cpp
@@ -22,10 +22,7 @@ subject to the following restrictions:
 #include "LinearMath/btMinMax.h"
 #include "BulletCollision/NarrowPhaseCollision/btManifoldPoint.h"
 
-btContactConstraint::btContactConstraint()
-:btTypedConstraint(CONTACT_CONSTRAINT_TYPE)
-{
-}
+
 
 btContactConstraint::btContactConstraint(btPersistentManifold* contactManifold,btRigidBody& rbA,btRigidBody& rbB)
 :btTypedConstraint(CONTACT_CONSTRAINT_TYPE,rbA,rbB),
diff --git a/src/BulletDynamics/ConstraintSolver/btContactConstraint.h b/src/BulletDynamics/ConstraintSolver/btContactConstraint.h
index 481b89e54..ae4aea72b 100644
--- a/src/BulletDynamics/ConstraintSolver/btContactConstraint.h
+++ b/src/BulletDynamics/ConstraintSolver/btContactConstraint.h
@@ -30,7 +30,6 @@ protected:
 
 public:
 
-	btContactConstraint();
 
 	btContactConstraint(btPersistentManifold* contactManifold,btRigidBody& rbA,btRigidBody& rbB);
 
diff --git a/src/BulletDynamics/ConstraintSolver/btGeneric6DofConstraint.cpp b/src/BulletDynamics/ConstraintSolver/btGeneric6DofConstraint.cpp
index 653975217..9b0d40d5e 100644
--- a/src/BulletDynamics/ConstraintSolver/btGeneric6DofConstraint.cpp
+++ b/src/BulletDynamics/ConstraintSolver/btGeneric6DofConstraint.cpp
@@ -31,14 +31,7 @@ http://gimpact.sf.net
 #define D6_USE_FRAME_OFFSET true
 
 
-btGeneric6DofConstraint::btGeneric6DofConstraint()
-:btTypedConstraint(D6_CONSTRAINT_TYPE),
-m_useLinearReferenceFrameA(true),
-m_useOffsetForConstraintFrame(D6_USE_FRAME_OFFSET),
-m_flags(0),
-m_useSolveConstraintObsolete(D6_USE_OBSOLETE_METHOD)
-{
-}
+
 
 
 
@@ -55,9 +48,9 @@ m_useSolveConstraintObsolete(D6_USE_OBSOLETE_METHOD)
 }
 
 
-static btRigidBody s_fixed(0, 0, 0);
+
 btGeneric6DofConstraint::btGeneric6DofConstraint(btRigidBody& rbB, const btTransform& frameInB, bool useLinearReferenceFrameB)
-        : btTypedConstraint(D6_CONSTRAINT_TYPE, s_fixed, rbB),
+        : btTypedConstraint(D6_CONSTRAINT_TYPE, getFixedBody(), rbB),
 		m_frameInB(frameInB),
 		m_useLinearReferenceFrameA(useLinearReferenceFrameB),
 		m_flags(0),
diff --git a/src/BulletDynamics/ConstraintSolver/btGeneric6DofConstraint.h b/src/BulletDynamics/ConstraintSolver/btGeneric6DofConstraint.h
index 0769f83ff..40100205c 100644
--- a/src/BulletDynamics/ConstraintSolver/btGeneric6DofConstraint.h
+++ b/src/BulletDynamics/ConstraintSolver/btGeneric6DofConstraint.h
@@ -351,8 +351,7 @@ public:
 
     btGeneric6DofConstraint(btRigidBody& rbA, btRigidBody& rbB, const btTransform& frameInA, const btTransform& frameInB ,bool useLinearReferenceFrameA);
     btGeneric6DofConstraint(btRigidBody& rbB, const btTransform& frameInB, bool useLinearReferenceFrameB);
-    btGeneric6DofConstraint();
-
+    
 	//! Calcs global transform of the offsets
 	/*!
 	Calcs the global transform for the joint offset for body A an B, and also calcs the agle differences between the bodies.
diff --git a/src/BulletDynamics/ConstraintSolver/btHingeConstraint.cpp b/src/BulletDynamics/ConstraintSolver/btHingeConstraint.cpp
index 04ec9a673..231625c27 100644
--- a/src/BulletDynamics/ConstraintSolver/btHingeConstraint.cpp
+++ b/src/BulletDynamics/ConstraintSolver/btHingeConstraint.cpp
@@ -30,16 +30,7 @@ subject to the following restrictions:
 
 #ifndef __SPU__
 
-btHingeConstraint::btHingeConstraint()
-: btTypedConstraint (HINGE_CONSTRAINT_TYPE),
-m_enableAngularMotor(false),
-m_useSolveConstraintObsolete(HINGE_USE_OBSOLETE_SOLVER),
-m_useOffsetForConstraintFrame(HINGE_USE_FRAME_OFFSET),
-m_flags(0),
-m_useReferenceFrameA(false)
-{
-	m_referenceSign = m_useReferenceFrameA ? btScalar(-1.f) : btScalar(1.f);
-}
+
 
 
 
diff --git a/src/BulletDynamics/ConstraintSolver/btHingeConstraint.h b/src/BulletDynamics/ConstraintSolver/btHingeConstraint.h
index 8058b3ed8..bdbad3452 100644
--- a/src/BulletDynamics/ConstraintSolver/btHingeConstraint.h
+++ b/src/BulletDynamics/ConstraintSolver/btHingeConstraint.h
@@ -98,7 +98,6 @@ public:
 
 	btHingeConstraint(btRigidBody& rbA,const btTransform& rbAFrame, bool useReferenceFrameA = false);
 
-	btHingeConstraint();
 
 	virtual void	buildJacobian();
 
diff --git a/src/BulletDynamics/ConstraintSolver/btPoint2PointConstraint.cpp b/src/BulletDynamics/ConstraintSolver/btPoint2PointConstraint.cpp
index 35aa58714..b515e232c 100644
--- a/src/BulletDynamics/ConstraintSolver/btPoint2PointConstraint.cpp
+++ b/src/BulletDynamics/ConstraintSolver/btPoint2PointConstraint.cpp
@@ -20,12 +20,7 @@ subject to the following restrictions:
 
 
 
-btPoint2PointConstraint::btPoint2PointConstraint()
-:btTypedConstraint(POINT2POINT_CONSTRAINT_TYPE),
-m_flags(0),
-m_useSolveConstraintObsolete(false)
-{
-}
+
 
 btPoint2PointConstraint::btPoint2PointConstraint(btRigidBody& rbA,btRigidBody& rbB, const btVector3& pivotInA,const btVector3& pivotInB)
 :btTypedConstraint(POINT2POINT_CONSTRAINT_TYPE,rbA,rbB),m_pivotInA(pivotInA),m_pivotInB(pivotInB),
diff --git a/src/BulletDynamics/ConstraintSolver/btPoint2PointConstraint.h b/src/BulletDynamics/ConstraintSolver/btPoint2PointConstraint.h
index bf2d24539..a828bbec2 100644
--- a/src/BulletDynamics/ConstraintSolver/btPoint2PointConstraint.h
+++ b/src/BulletDynamics/ConstraintSolver/btPoint2PointConstraint.h
@@ -76,7 +76,6 @@ public:
 
 	btPoint2PointConstraint(btRigidBody& rbA,const btVector3& pivotInA);
 
-	btPoint2PointConstraint();
 
 	virtual void	buildJacobian();
 
diff --git a/src/BulletDynamics/ConstraintSolver/btSliderConstraint.cpp b/src/BulletDynamics/ConstraintSolver/btSliderConstraint.cpp
index 91f226eba..5cd0291ad 100755
--- a/src/BulletDynamics/ConstraintSolver/btSliderConstraint.cpp
+++ b/src/BulletDynamics/ConstraintSolver/btSliderConstraint.cpp
@@ -76,14 +76,6 @@ void btSliderConstraint::initParams()
 
 
 
-btSliderConstraint::btSliderConstraint()
-        :btTypedConstraint(SLIDER_CONSTRAINT_TYPE),
-		m_useSolveConstraintObsolete(false),
-		m_useLinearReferenceFrameA(true)
-{
-	initParams();
-}
-
 
 
 btSliderConstraint::btSliderConstraint(btRigidBody& rbA, btRigidBody& rbB, const btTransform& frameInA, const btTransform& frameInB, bool useLinearReferenceFrameA)
@@ -96,9 +88,9 @@ btSliderConstraint::btSliderConstraint(btRigidBody& rbA, btRigidBody& rbB, const
 }
 
 
-static btRigidBody s_fixed(0, 0, 0);
+
 btSliderConstraint::btSliderConstraint(btRigidBody& rbB, const btTransform& frameInB, bool useLinearReferenceFrameB)
-        : btTypedConstraint(SLIDER_CONSTRAINT_TYPE, s_fixed, rbB),
+        : btTypedConstraint(SLIDER_CONSTRAINT_TYPE, getFixedBody(), rbB),
 		m_useSolveConstraintObsolete(false),
 		m_frameInB(frameInB),
 		m_useLinearReferenceFrameA(useLinearReferenceFrameB)
diff --git a/src/BulletDynamics/ConstraintSolver/btSliderConstraint.h b/src/BulletDynamics/ConstraintSolver/btSliderConstraint.h
index 6a6f1ed2c..9de7aa211 100755
--- a/src/BulletDynamics/ConstraintSolver/btSliderConstraint.h
+++ b/src/BulletDynamics/ConstraintSolver/btSliderConstraint.h
@@ -158,7 +158,7 @@ public:
 	// constructors
     btSliderConstraint(btRigidBody& rbA, btRigidBody& rbB, const btTransform& frameInA, const btTransform& frameInB ,bool useLinearReferenceFrameA);
     btSliderConstraint(btRigidBody& rbB, const btTransform& frameInB, bool useLinearReferenceFrameB);
-    btSliderConstraint();
+
 	// overrides
     virtual void	buildJacobian();
     virtual void getInfo1 (btConstraintInfo1* info);
diff --git a/src/BulletDynamics/ConstraintSolver/btTypedConstraint.cpp b/src/BulletDynamics/ConstraintSolver/btTypedConstraint.cpp
index ea72a640d..cff532105 100644
--- a/src/BulletDynamics/ConstraintSolver/btTypedConstraint.cpp
+++ b/src/BulletDynamics/ConstraintSolver/btTypedConstraint.cpp
@@ -17,33 +17,20 @@ subject to the following restrictions:
 #include "btTypedConstraint.h"
 #include "BulletDynamics/Dynamics/btRigidBody.h"
 
-static btRigidBody s_fixed(0, 0,0);
+
 
 #define DEFAULT_DEBUGDRAW_SIZE btScalar(0.3f)
 
-btTypedConstraint::btTypedConstraint(btTypedConstraintType type)
-:btTypedObject(type),
-m_userConstraintType(-1),
-m_userConstraintId(-1),
-m_needsFeedback(false),
-m_rbA(s_fixed),
-m_rbB(s_fixed),
-m_appliedImpulse(btScalar(0.)),
-m_dbgDrawSize(DEFAULT_DEBUGDRAW_SIZE)
-{
-	s_fixed.setMassProps(btScalar(0.),btVector3(btScalar(0.),btScalar(0.),btScalar(0.)));
-}
 btTypedConstraint::btTypedConstraint(btTypedConstraintType type, btRigidBody& rbA)
 :btTypedObject(type),
 m_userConstraintType(-1),
 m_userConstraintId(-1),
 m_needsFeedback(false),
 m_rbA(rbA),
-m_rbB(s_fixed),
+m_rbB(getFixedBody()),
 m_appliedImpulse(btScalar(0.)),
 m_dbgDrawSize(DEFAULT_DEBUGDRAW_SIZE)
 {
-	s_fixed.setMassProps(btScalar(0.),btVector3(btScalar(0.),btScalar(0.),btScalar(0.)));
 }
 
 
@@ -57,8 +44,6 @@ m_rbB(rbB),
 m_appliedImpulse(btScalar(0.)),
 m_dbgDrawSize(DEFAULT_DEBUGDRAW_SIZE)
 {
-	s_fixed.setMassProps(btScalar(0.),btVector3(btScalar(0.),btScalar(0.),btScalar(0.)));
-
 }
 
 
diff --git a/src/BulletDynamics/ConstraintSolver/btTypedConstraint.h b/src/BulletDynamics/ConstraintSolver/btTypedConstraint.h
index 69b289d27..d9661b0b7 100644
--- a/src/BulletDynamics/ConstraintSolver/btTypedConstraint.h
+++ b/src/BulletDynamics/ConstraintSolver/btTypedConstraint.h
@@ -72,10 +72,16 @@ protected:
 	///internal method used by the constraint solver, don't use them directly
 	btScalar getMotorFactor(btScalar pos, btScalar lowLim, btScalar uppLim, btScalar vel, btScalar timeFact);
 	
+	static btRigidBody& getFixedBody()
+	{
+		static btRigidBody s_fixed(0, 0,0);
+		s_fixed.setMassProps(btScalar(0.),btVector3(btScalar(0.),btScalar(0.),btScalar(0.)));
+		return s_fixed;
+	}	
+
 
 public:
 
-	btTypedConstraint(btTypedConstraintType type);
 	virtual ~btTypedConstraint() {};
 	btTypedConstraint(btTypedConstraintType type, btRigidBody& rbA);
 	btTypedConstraint(btTypedConstraintType type, btRigidBody& rbA,btRigidBody& rbB);