Stirling engine configurations: which type needs which parts on this shelf — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/stirling-configurations-guide/ (CC BY 4.0) Basis: Standard taxonomy (alpha / beta / gamma by cylinder arrangement; drive mechanism; free-piston and non-mechanical variants) with the parts list for each drawn from this library Catalog version: 2026-10-20 Sizes: see table below - Three cylinder arrangements: alpha (two pistons, hot and cold cylinders), beta (displacer and piston in one cylinder), gamma (displacer cylinder plus a separate power cylinder). Then the drive: crank + con-rod, bell crank, rhombic, Ross yoke, Scotch yoke, swash plate, or none (free-piston, Ringbom, thermoacoustic, fluidyne). - Every row's parts exist on the shelf as free STEP/STL except the rotary-displacer type. Pick the row, open the linked objects, print the calibration coupons first, and the parts fit each other: Ø3 pins, Ø5 shafts, 623/608 bearings, 10 mL syringes, 16 ga tri-clamp bores and 2020 frames are the common interfaces throughout. - An agent asked to 'design a beta Stirling with a rhombic drive for a 2 in tri-clamp spool' should pull: rhombic-drive-kit, tri-clamp-displacers-and-heads (Ø46 × 90 displacer, crank head), tri-clamp-spool (2 in × 6 in), tri-clamp-ferrule, tri-clamp-end-cap gasket, regenerator-and-heat-materials, brass-tube-ks (5 mm tube rod), ball-bearings-metric (623), crank-conrod-flywheel-kit (flywheel), tea-light-candles or copper-pipe-type-l-m heat exchangers, and printer-calibration-coupons. - LES: this is the index the LES videos point at: 'the parts for every engine type are on one page'. type mechanism shelf objects note Gamma (crank) displacer + separate power cylinder, 90° crank crank-conrod-flywheel-kit, tri-clamp-displacers-and-heads, plastic-syringes, can-engine-printed-kit easiest; LES can and tri-clamp engines Beta (bell crank) displacer and piston coaxial, bell crank + links motion-mechanisms (bell crank, links), tri-clamp-displacers-and-heads compact Beta (rhombic drive) counter-rotating crank gears, yokes rhombic-drive-kit, spur-gears-involute balanced, Philips Alpha (V-twin) two pistons 90° apart alpha-twin-crank-90, plastic-syringes highest specific power Alpha (Ross yoke) parallel cylinders, triangular rocker ross-yoke-kit straight-line motion Scotch yoke / swash plate sinusoidal or multi-cylinder motion-mechanisms no con-rod Ringbom free displacer on stops, crank piston free-piston-core (stops), crank-conrod-flywheel-kit semi-free-piston Free-piston flexures, gas springs, linear alternator spiral-flexure-bearings, free-piston-core, linear-alternator-kit, nasa-fpse-references NASA / Sunpower LTD (coffee cup) wide thin displacer, tiny piston ltd-coffee-cup-engine-kit runs on 15 K Thermoacoustic (standing wave) stack in a resonator, no pistons thermoacoustic-stacks-and-resonators, tri-clamp-spool LES main line Thermoacoustic-Stirling (travelling wave, TASHE) looped regenerator + resonator regenerator-and-heat-materials, thermoacoustic-stacks-and-resonators, linear-alternator-kit NASA TASHE Fluidyne water columns as pistons fluidyne-manifold, copper-pipe-type-l-m no moving parts Lamina-flow (thermal lag) one tube, one piston, no displacer borosilicate-test-tubes, plastic-syringes, crank-conrod-flywheel-kit simplest moving-part engine Rotary displacer rotating displacer in a drum — (not on the shelf yet) rare Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Wikipedia: Stirling engine — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Stirling_engine - Wikipedia: Rhombic drive — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Rhombic_drive - Wikipedia: Thermoacoustic heat engine — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Thermoacoustic_heat_engine - Ohio University: Stirling cycle machine analysis (Urieli) — web — Author's site — https://www.ohio.edu/mechanical/stirling/ - Long Earth Society: Engine builds — web, video — LES site — https://longearthsociety.com/engineering/ Xem Studio scan: not planned; the official CAD above covers it. API: https://xemstudio.com/api/geometry?object=stirling-configurations-guide