Rider Ericsson Hot Air Engine
Craftsman: Roger Butzen
Knapp Collection #: 754
Catalog #: 2024.5.1
Contributor: Paul Knapp
This Rider Ericsson hot air engine was built by Roger Butzen of Texas.
Rider-Ericsson Hot Air Pump Engine
Craftsman: Bill Fowler
Catalog #: 2010.7.1
Donor: Les Cade
This 1/4-scale Rider-Ericsson hot air pump engine was made from castings by Myers Engine Works and then expertly machined and painted.
Riggle 4-Cylinder Inline Engine
Craftsman: Jim Riggle
Knapp Collection #: 695
Catalog #: 2022.8.6
Contributor: Paul Knapp
This Riggle 4-cylinder inline engine is 9.5″-long, 7″-wide, 7.5″-inches tall, and is mounted on a running stand that houses all necessary accessories to run and monitor the engine.
Riggle NOVI DOHC 1/4 Scale Sprint Car
Craftsman: Jim Riggle
Knapp Collection #: 300
Catalog #: 2011.32.14
Contributor: Paul Knapp
This 1/4 scale Novi V8 sprint car was designed and built by Jim Riggle, of North Dakota, in the mid-1980s. The model car is 37″-long, 16″-wide, and 12″-high. Jim used this sprint car as the test platform for his new model of the NOVI V8 engine.
Ringbom Hot Air Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.61
Donor: Mark Petersen
A miniature Ringbom hot air engine.
Robarts R780 7-Cylinder Radial Engine
Craftsman: Bob Walker
Knapp Collection #: 13
Catalog #: 2011.27.3
Contributor: Paul Knapp
This Robarts R780 7-cylinder radial engine has a bore of 1.125 inches and stroke of 1.125 inches for a total displacement of 7.8 cubic inches.
Robert Stirling’s First Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.35
Donor: Mark Petersen
Birk built this model of Robert Stirling’s first hot air engine. It has a brick façade on the metal housing.
Robert Stirling’s Fourth Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.24
Donor: Mark Petersen
This is a small model of Robert Stirling’s fourth engine.
Robinson Hot Air Engine Model
Craftsman: Birk Petersen
Catalog #: 2016.15.42
Donor: Mark Petersen
Birk’s model of a Robinson hot air engine.
Rocking Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.75
Donor: Mark Petersen
Birk Petersen built this miniature electric rocking engine.
Rocking Valve Engine
Craftsman: Theodore Carder
Catalog #: 2021.11.5
Donor: Susi Trumbo
A miniature rocking valve engine built by Theodore Carder.
Rodless Rotary Engine
Craftsman: Peter Grunstra
Catalog #: 2013.42.1
Donor: Peter Grunstra
This 2-cycle rodless rotary engine, suitable for aircraft or autos, is a prototype built by Peter Grunstra.
Root & Vandervoort Vertical Gas Engine
Craftsman: Russell Anderson
Catalog #: 2019.21.4
Contributor: Steve Anderson
Several engines built by Russell Anderson, including this Root & Vandervoort vertical gas engine, are on display in the Craftsmanship Museum.
Ross 2-Cylinder, 2-Cycle Target Drone Engine
Craftsman: Lou Ross
Knapp Collection #: 196
Catalog #: 2008.16.39
Contributor: Paul Knapp
Lou Ross designed and developed this large 3.5 cubic inch opposed twin for possible use as a target drone engine for military applications.
Ross 4-Cylinder, 2-Cycle Target Drone Engine
Craftsman: Lou Ross
Knapp Collection #: 197
Catalog #: 2008.16.40
Contributor: Paul Knapp
This is a 7.0 cubic inch opposed four-cylinder, two-cycle engine designed to power a target drone. It burns methanol on glow ignition.
Royer Model Airplane Engine
Craftsman: Royer Motors
Knapp Collection #: 318
Catalog #: 2012.33.3
Contributor: Paul Knapp
This Royer model airplane engine is 7”-long and 7”-high. The engine has a .785 cu. in. displacement and consists of a sand cast crankcase, front cover, and spoke-fin head.
Saito FA-120, 4-Cycle Cutaway Airplane Engine
Craftsman: Saito Engines
Knapp Collection #: 250
Catalog #: 2011.27.28
Contributor: Paul Knapp
The Saito FA-120, 4-cycle cutaway model airplane engine was manufactured by Saito Engines of Japan, circa 2000.
Satra “R-5” Model Radial Airplane Engine
Craftsman: Bruce Satra
Knapp Collection #: 202
Catalog #: 2008.16.44
Contributor: Paul Knapp
Intrigued by the Morton M5, Bruce Satra built a more robust design which he dubbed the Satra R-5. The bore is .700 and stroke is .625, making the total displacement 1.2 cubic inches.
Satra 0-440, 4-Cylinder Opposed Model Aircraft Engine
Craftsman: Bruce Satra
Knapp Collection #: 63
Catalog #: 2008.16.09
Contributor: Paul Knapp
Bruce Satra, of Utah, engineered and fabricated this 40 cc, 4-cylinder opposed model aircraft engine in the mid-1980s.
Showing 20 of 678 exhibits.