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Rhombic animation
Rhombic animation
Published: 2010/08/14
Channel: jcmarani
Stirling engine with Rhombic drive
Stirling engine with Rhombic drive
Published: 2015/07/01
Channel: Ed van den Berg
Stirling Engine with Rhombic Drive  (highspeed)
Stirling Engine with Rhombic Drive (highspeed)
Published: 2014/04/18
Channel: Latheman's crazy machines
Rhombic drive simulation
Rhombic drive simulation
Published: 2007/10/13
Channel: NygaardsDK
Stirling engine  with Rhombic drive
Stirling engine with Rhombic drive
Published: 2014/11/26
Channel: Stirlingmodels
Homemade rhombic drive model
Homemade rhombic drive model
Published: 2014/08/24
Channel: András Gazdag
Stirling Engine with Rhombic Drive Part 1
Stirling Engine with Rhombic Drive Part 1
Published: 2008/09/05
Channel: barumman
beta rhombic drive twin crank pressurised hot air engine
beta rhombic drive twin crank pressurised hot air engine
Published: 2013/08/06
Channel: webuyoldhifiat sonn
Rhombic drive Stirling engine - moteur Stirling à embiellage rhombique
Rhombic drive Stirling engine - moteur Stirling à embiellage rhombique
Published: 2010/04/24
Channel: aeropic
Rhombic Stirling engine disassembling, details and development
Rhombic Stirling engine disassembling, details and development
Published: 2017/04/27
Channel: Ralf tom-rock
Rhombic Stirling Engine
Rhombic Stirling Engine
Published: 2012/12/24
Channel: Waseem Abdullah
Ross 11cc beta rhombic drive hot air engine
Ross 11cc beta rhombic drive hot air engine
Published: 2013/08/01
Channel: webuyoldhifiat sonn
Rhombic drive stirling
Rhombic drive stirling
Published: 2016/01/05
Channel: MrTomog
RHOMBIC DRIVE STIRLING CYCLE ENGINE PART TWO
RHOMBIC DRIVE STIRLING CYCLE ENGINE PART TWO
Published: 2008/09/07
Channel: barumman
Stirling Engine with Rhombic Drive
Stirling Engine with Rhombic Drive
Published: 2014/04/18
Channel: Latheman's crazy machines
Rhombic drive VS. My 105° "L" yoke
Rhombic drive VS. My 105° "L" yoke
Published: 2014/04/11
Channel: Attila Blade
Beta Stirlingmotor mit Rhombic Drive M001 17
Beta Stirlingmotor mit Rhombic Drive M001 17
Published: 2017/01/19
Channel: Tragschrauberrundflug-NRW Christian Wolff
Jellyfish test - rhombic drive first movement.
Jellyfish test - rhombic drive first movement.
Published: 2015/03/04
Channel: elios grantham
Stirling engine with rhombic drive 75ccm 50Watts measured by Arduino
Stirling engine with rhombic drive 75ccm 50Watts measured by Arduino
Published: 2015/03/17
Channel: Ralf tom-rock
Rhombic Drive Stirling Engine Part 3
Rhombic Drive Stirling Engine Part 3
Published: 2008/09/13
Channel: barumman
Stirling engine with rhombic drive
Stirling engine with rhombic drive
Published: 2014/02/24
Channel: Ralf tom-rock
Rhombic Drive Stirling Engine,    10cc Pressurized,  Part 2
Rhombic Drive Stirling Engine, 10cc Pressurized, Part 2
Published: 2009/12/05
Channel: barumman
Rhombic Drive Stirling Engine Part 4
Rhombic Drive Stirling Engine Part 4
Published: 2008/10/27
Channel: barumman
Rhombic Drive Stirling Engine, 10cc Pressurized, Part 1
Rhombic Drive Stirling Engine, 10cc Pressurized, Part 1
Published: 2009/12/03
Channel: barumman
Rhombic Drive Stirling Cycle Engine  10cc Mk 2
Rhombic Drive Stirling Cycle Engine 10cc Mk 2
Published: 2015/08/20
Channel: barumman
Rhombic Drive for Stirling Engine
Rhombic Drive for Stirling Engine
Published: 2009/07/13
Channel: wolframmathematica
Julius De Waal Rhombic Stirling engine
Julius De Waal Rhombic Stirling engine
Published: 2013/04/23
Channel: jlw
Stirling Engine with Rhombic Drive
Stirling Engine with Rhombic Drive
Published: 2013/11/09
Channel: Tech Invent A/S
[Geometric Construction] Rhombic icosahedron (animation)
[Geometric Construction] Rhombic icosahedron (animation)
Published: 2013/10/09
Channel: 楊明訓
stirling engine twin 2  スターリングエンジン
stirling engine twin 2  スターリングエンジン
Published: 2014/01/12
Channel: スターリング
Stirling Engine with Rhombic Drive details
Stirling Engine with Rhombic Drive details
Published: 2014/03/05
Channel: Ralf tom-rock
Rhombic drive stirling running
Rhombic drive stirling running
Published: 2016/01/06
Channel: MrTomog
flame eating rhombic (or stirling?) engine
flame eating rhombic (or stirling?) engine
Published: 2013/03/24
Channel: lykenth08
ID 303 W.S.Badr/Optimization of Rhombic Drive Stirling Engine
ID 303 W.S.Badr/Optimization of Rhombic Drive Stirling Engine
Published: 2015/10/07
Channel: Wael Badr
Rhombic Drive animation(8 bar mechanism)
Rhombic Drive animation(8 bar mechanism)
Published: 2016/07/30
Channel: Harshdeep .Singh
RHOMBIC DRIVE STIRLING ENGINE, PART FIVE
RHOMBIC DRIVE STIRLING ENGINE, PART FIVE
Published: 2008/11/08
Channel: barumman
Stirling Rhombic Drive
Stirling Rhombic Drive
Published: 2015/05/03
Channel: FerrariniMotori
stirling engine   スターリングエンジン
stirling engine   スターリングエンジン
Published: 2014/01/26
Channel: スターリング
Rhombic Drive Stirling Engine by William Kidd
Rhombic Drive Stirling Engine by William Kidd
Published: 2013/03/10
Channel: Jim Larsen
Animated Beta Type Stirling, Rhombic Drive (CatiaV5)
Animated Beta Type Stirling, Rhombic Drive (CatiaV5)
Published: 2013/06/16
Channel: Max Musterheinz
stirling engine  スターリングエンジン3
stirling engine  スターリングエンジン3
Published: 2014/01/11
Channel: スターリング
stirling  engine  twin  スターリングエンジン 2気筒
stirling engine twin  スターリングエンジン 2気筒
Published: 2014/01/04
Channel: スターリング
Stirling engine (rhombic drive Beta configuration)
Stirling engine (rhombic drive Beta configuration)
Published: 2012/06/03
Channel: James Dixon
#3 Stirling 2 - Rhombic Model
#3 Stirling 2 - Rhombic Model
Published: 2009/02/10
Channel: PulseFuelNerd
Rhombic Stirling Engine 235 Watt data logging with Arduino
Rhombic Stirling Engine 235 Watt data logging with Arduino
Published: 2017/04/19
Channel: Ralf tom-rock
Stirling Beta - Rhombic drive
Stirling Beta - Rhombic drive
Published: 2010/04/21
Channel: jcmarani
PEACE Lab. NCKU-Asymmetric Rhombic Drive Stirling Engine
PEACE Lab. NCKU-Asymmetric Rhombic Drive Stirling Engine
Published: 2008/10/21
Channel: Yu-Ting Lin
stirling engine 4‐cylinder  スターリングエンジン
stirling engine 4‐cylinder  スターリングエンジン
Published: 2014/12/20
Channel: スターリング
Regen at Beale Park - June 2017
Regen at Beale Park - June 2017
Published: 2017/06/06
Channel: Adrian Levy
Pallarpad
Pallarpad's concept vs Rhombic drive
Published: 2014/05/30
Channel: Attila Blade
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WIKIPEDIA ARTICLE

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Cut away diagram of a Rhombic Drive Beta Stirling Engine Design
Pink - Hot cylinder wall, Dark grey - Cold cylinder wall (with coolant inlet and outlet pipes in Yellow), Dark Green - Thermal insulation separating the two cylinder ends, Light Green - Displacer piston, Dark Blue - Power piston, Light Blue - Flywheels,
Not Shown: external heat-source, and external heat-sinks. In this design the Displacer piston is used without a regenerator.

The rhombic drive is a specific method of transferring mechanical energy, or work, used when a single cylinder is used for two separately oscillating pistons.

History[edit]

It was originally developed around 1900 for the twin-cylinder Lanchester car engine where it allowed perfect balancing of the inertial forces on both pistons.  A current example of its use is on beta type-Stirling engines; the drive's complexity and tight tolerances, causing a high cost of manufacture, is a hurdle for the widespread usage of this drive.

Operation[edit]

Schematic of a rhombic drive stirling engine in operation.

In its simplest form, the drive utilizes a jointed rhomboid to convert linear work from a reciprocating piston to rotational work.   The connecting rod of the piston is rigid as opposed to a common reciprocating engine which directly connects the piston to the crankshaft with a flexible joint in the piston. Instead, the rod connects to one corner of a rhombus.   When force is applied to the piston, it pushes down; at the same time, the outer corners of the rhomboid push out. They push on two cranks/flywheels which cause them to rotate, each in opposite directions. As the wheels rotate the rhombus progresses its change of shape from being flattened in the direction of the piston axis at top dead centre to being flattened in the perpendicular direction to the piston axis at bottom dead centre.

In the pictured example the left crank/flywheel turns clockwise and the right crank/flywheel anticlockwise. They turn at the same angular velocity and this can be reinforced by intermeshing them as gear wheels.

References[edit]

See also[edit]


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