Open Crank 6 Inline Engine
Craftsman: Randall Cox
Knapp Collection #: 586
Catalog #: 2019.10.9
Contributor: Paul Knapp
This Open crank 6 inline engine was designed by Randall Cox, and built by Ramon Hoagland in 2018.
Opposed Piston 2-Cylinder Engine
Craftsman: Ramon Hoagland
Knapp Collection #: 738
Catalog #: 2023.2.4
Contributor: Paul Knapp
This opposed piston 2-cylinder engine is 16″-long, 10″-wide, 9″-high, and weighs about 15 lbs.
Orwick .23 Model Airplane Engine
Craftsman: Henry Orwick
Catalog #: 2011.19.2
Contributor: Cheryl Martin
An Orwick .23 model airplane engine built in 1951. This engine is serial No. 3093.
Orwick .29 Model Airplane Engine
Craftsman: Henry Orwick
Catalog #: 2011.19.1
Contributor: Cheryl Martin
An Orwick .29 single-cylinder model airplane engine made between 1948-1950.
Orwick .29 Model Airplane Engine
Craftsman: Henry Orwick
Catalog #: 2011.19.3
Contributor: Cheryl Martin
An Orwick .29 model airplane engine built in 1951. This engine is serial No. 2233.
Orwick .64 Model Airplane Engine
Craftsman: Henry Orwick
Catalog #: 2011.19.4
Contributor: Cheryl Martin
An Orwick .64 model airplane engine built in 1946. This engine is serial No. 64089.
Orwick .64 Model Airplane Engine
Craftsman: Henry Orwick
Catalog #: 2011.19.5
Contributor: Cheryl Martin
An Orwick .64 model airplane engine built in 1946. This engine is serial No. 4638.
Orwick .64 Model Airplane Engine
Craftsman: Henry Orwick
Catalog #: 2011.19.6
Contributor: Cheryl Martin
An Orwick .64 model airplane engine built in 1946. This engine is serial No. 2211.
Orwick .64 Model Airplane Engine
Craftsman: Henry Orwick
Catalog #: 2011.19.7
Contributor: Cheryl Martin
An Orwick .64 model airplane engine built between 1946-1948. This engine is serial No. 64963.
Orwick .64 Model Airplane Engine
Craftsman: Henry Orwick
Catalog #: 2011.19.8
Contributor: Cheryl Martin
An Orwick .64 model airplane engine built between 1946-1948. This engine is serial No. 64469.
Oscillating Cylinder Steam Engine
Craftsman: Rudy Kouhoupt
Rudy’s miniature oscillating steam engine captures the solid construction and smooth running characteristics of its full-size counterparts.
Oscillating Steam Engine
Craftsman: Rudy Kouhoupt
This small oscillating steam engine is another illustration of the variety of different configurations built by Rudy Kouhoupt.
Oscillating Steam Engine
Craftsman: Rudy Kouhoupt
This tiny oscillating steam engine isn’t much larger than a US quarter.
Oscillating Steam Engine
Craftsman: Rudy Kouhoupt
This small oscillating steam engine is yet another simple and functional design by Rudy Kouhoupt.
Oscillating Steam Engine
Craftsman: Rudy Kouhoupt
This oscillating steam engine, designed and built by Rudy Kouhoupt, has served as a great beginner project for eager model engineers.
Otter 30 Inline 4-Cylinder Boat Engine
Craftsman: Dr. Haydock
Knapp Collection #: 42
Catalog #: 2009.9.04
Contributor: Paul Knapp
Dr. Haydock designed single-cylinder, 2-cylinder and 4-cylinder engines for model boats. He built a handful of these Otter 30 cc engines from his own patterns and castings.
Otto-Langen Atmospheric Engine
Craftsman: Ramon Hoagland
Knapp Collection #: 547
Catalog #: 2017.27.1
Contributor: Paul Knapp
This Otto-Langen atmospheric engine was built at 1/7 scale and measures about 11” in diameter by 24”-high. It is a model of the world’s first production combustion engine.
Overcrank Vertical Steam Engine
Craftsman: Rudy Kouhoupt
This Overcrank vertical steam engine features a unique system of links and levers to guide the piston rod.
Pacifier V4 Water-Cooled Engine
Craftsman: Bob Shores
Knapp Collection #: 438
Catalog #: 2016.8.22
Contributor: Paul Knapp
This “Pacifier” V4 water-cooled model engine is a mere 5.5″-wide, 6.5″-long, 6″-high, and weighs about 3 pounds. It has a bore and stroke of .625″ and burns gasoline on spark ignition.
Showing 20 of 651 exhibits.