diff --git a/source/hazard/hrweight.cpp b/source/hazard/hrweight.cpp
new file mode 100644
index 000000000..09ce5e031
--- /dev/null
+++ b/source/hazard/hrweight.cpp
@@ -0,0 +1,100 @@
+/*=========================================================================
+
+	hrweight.cpp
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __HAZARD_HRWEIGHT_H__
+#include "hazard\hrweight.h"
+#endif
+
+#ifndef	__UTILS_HEADER__
+#include	"utils\utils.h"
+#endif
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcRisingWeightHazard::init()
+{
+	CNpcHazard::init();
+
+	m_triggered = false;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcRisingWeightHazard::setWaypoints( sThingHazard *ThisHazard )
+{
+	ASSERT( ThisHazard->PointCount == 3 );
+
+	u16	*PntList=(u16*)MakePtr(ThisHazard,sizeof(sThingHazard));
+
+	u16 newXPos, newYPos;
+
+	// get master hazard init pos
+
+	newXPos = (u16) *PntList;
+	PntList++;
+	newYPos = (u16) *PntList;
+	PntList++;
+
+	DVECTOR startPos;
+	startPos.vx = newXPos << 4;
+	startPos.vy = newYPos << 4;
+
+	Pos = startPos;
+	m_base = Pos;
+
+	// get master hazard max vertical extension
+
+	newXPos = (u16) *PntList;
+	PntList++;
+	newYPos = (u16) *PntList;
+	PntList++;
+
+	m_maxExtension = abs( ( newYPos << 4 ) - startPos.vy ) << 8;
+
+	// get slave trigger position
+
+	newXPos = (u16) *PntList;
+	PntList++;
+	newYPos = (u16) *PntList;
+	PntList++;
+
+	m_wheelPos.vx = newXPos;
+	m_wheelPos.vy = newYPos;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcRisingWeightHazard::processMovement( int _frames )
+{
+	if ( m_triggered )
+	{
+		m_triggered = false;
+		m_extension += ( 3 * _frames ) << 8;
+		if ( m_extension > m_maxExtension )
+		{
+			m_extension = m_maxExtension;
+		}
+	}
+	else
+	{
+		m_extension -= 64 * _frames;
+
+		if ( m_extension < 0 )
+		{
+			m_extension = 0;
+		}
+	}
+
+	Pos.vy = m_base.vy - ( m_extension >> 8 );
+}
diff --git a/source/hazard/hrweight.h b/source/hazard/hrweight.h
new file mode 100644
index 000000000..db01925c6
--- /dev/null
+++ b/source/hazard/hrweight.h
@@ -0,0 +1,36 @@
+/*=========================================================================
+
+	hrweight.h
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __HAZARD_HRWEIGHT_H__
+#define __HAZARD_HRWEIGHT_H__
+
+#ifndef __HAZARD_HAZARD_H__
+#include "hazard\hazard.h"
+#endif
+
+class CNpcRisingWeightHazard : public CNpcHazard
+{
+public:
+	void				init();
+	DVECTOR const		&getWheelPos()											{return( m_wheelPos );}
+	void				setTriggered()											{m_triggered = true;}
+protected:
+	virtual void		setWaypoints( sThingHazard *ThisHazard );
+	virtual void		processMovement( int _frames );
+
+	s32					m_maxExtension;
+	DVECTOR				m_wheelPos;
+	u8					m_triggered;
+};
+
+#endif
\ No newline at end of file
diff --git a/source/hazard/hrwheel.cpp b/source/hazard/hrwheel.cpp
new file mode 100644
index 000000000..8053e0968
--- /dev/null
+++ b/source/hazard/hrwheel.cpp
@@ -0,0 +1,116 @@
+/*=========================================================================
+
+	hrwheel.cpp
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __HAZARD_HRWHEEL_H__
+#include "hazard\hrwheel.h"
+#endif
+
+#ifndef	__UTILS_HEADER__
+#include	"utils\utils.h"
+#endif
+
+#ifndef	__PLAYER_PLAYER_H__
+#include	"player\player.h"
+#endif
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcRisingWeightWheelHazard::init()
+{
+	CNpcHazard::init();
+
+	m_rotation = 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcRisingWeightWheelHazard::setWaypoints( sThingHazard *ThisHazard )
+{
+	u16	*PntList=(u16*)MakePtr(ThisHazard,sizeof(sThingHazard));
+
+	u16 newXPos, newYPos;
+
+	// get init pos
+
+	newXPos = (u16) *PntList;
+	PntList++;
+	newYPos = (u16) *PntList;
+	PntList++;
+
+	DVECTOR startPos;
+	startPos.vx = newXPos << 4;
+	startPos.vy = newYPos << 4;
+
+	Pos = startPos;
+	m_base = Pos;
+
+	m_wheelPos.vx = newXPos;
+	m_wheelPos.vy = newYPos;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcRisingWeightWheelHazard::collidedWith( CThing *_thisThing )
+{
+	if ( m_isActive )
+	{
+		switch(_thisThing->getThingType())
+		{
+			case TYPE_PLAYER:
+			{
+				CPlayer *player = (CPlayer *) _thisThing;
+
+				ATTACK_STATE playerState = player->getAttackState();
+
+				if ( playerState == ATTACK_STATE__BUTT_BOUNCE )
+				{
+					m_weight->setTriggered();
+
+					m_rotation += 128;
+					m_rotation &= 4095;
+				}
+
+				break;
+			}
+
+			default:
+				ASSERT(0);
+				break;
+		}
+	}
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcRisingWeightWheelHazard::render()
+{
+	CHazardThing::render();
+
+	if (canRender())
+	{
+		DVECTOR &renderPos=getRenderPos();
+
+		SVECTOR rotation;
+		rotation.vx = 0;
+		rotation.vy = 0;
+		rotation.vz = m_rotation;
+
+		VECTOR scale;
+		scale.vx = ONE;
+		scale.vy = ONE;
+		scale.vz = ONE;
+
+		m_modelGfx->Render(renderPos,&rotation,&scale);
+	}
+}
diff --git a/source/hazard/hrwheel.h b/source/hazard/hrwheel.h
new file mode 100644
index 000000000..64f2b4a97
--- /dev/null
+++ b/source/hazard/hrwheel.h
@@ -0,0 +1,41 @@
+/*=========================================================================
+
+	hrwheel.h
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __HAZARD_HRWHEEL_H__
+#define __HAZARD_HRWHEEL_H__
+
+#ifndef __HAZARD_HAZARD_H__
+#include "hazard\hazard.h"
+#endif
+
+#ifndef __HAZARD_HRWEIGHT_H__
+#include "hazard\hrweight.h"
+#endif
+
+class CNpcRisingWeightWheelHazard : public CNpcHazard
+{
+public:
+	void				init();
+	DVECTOR const		&getWheelPos()											{return( m_wheelPos );}
+	void				linkToWeight( CNpcRisingWeightHazard *weight )			{m_weight = weight;}
+	virtual void		render();
+protected:
+	virtual void		setWaypoints( sThingHazard *ThisHazard );
+	virtual void		collidedWith(CThing *_thisThing);
+
+	DVECTOR				m_wheelPos;
+	CNpcRisingWeightHazard		*m_weight;
+	s16					m_rotation;
+};
+
+#endif
\ No newline at end of file