Offenhauser 270 4-Cylinder Racing Engine (In Progress)
Craftsman: Pamela Weiss
Contributor: Pamela Weiss
This unfinished 1/4 scale Offenhauser 270 4-cylinder racing engine is being built by Pamela Weiss. The scale engine was originally designed by Ron Colonna.
Offy 270 Racing Engine
Craftsman: Roger Butzen
Knapp Collection #: 782
Catalog #: 2024.5.18
Contributor: Paul Knapp
This impressive Offy 270 racing engine was built by Roger Butzen in 2000.
Ohlsson & Rice .60 Engine
Craftsman: Ohlsson & Rice
Catalog #: 2012.19.10
Donor: Joe Bridi
This Ohlsson & Rice .60 engine has spark ignition with a “Slow/Fast” ignition lever. It has a champion spark plug and was mounted on a wooden base.
Ohlsson Engine #1
Craftsman: Irwin “Irv” Ohlsson
Catalog #: 2015.29.1
Contributor: Gus Ohlsson
This is the first running model airplane engine that Irv Ohlsson ever built.
OHV Inline Slant 4-Cylinder Engine
Craftsman: Dick Pretel
Knapp Collection #: 591
Catalog #: 2019.11.4
Contributor: Paul Knapp
This overhead valve inline slant 4-cylinder engine is tilted 30 degrees to resemble the Pontiac Tempest and Chrysler engines used in the early 1960s.
Olds Hit N’ Miss Engine
Craftsman: Russell Anderson
Catalog #: 2019.21.1
Contributor: Steve Anderson
Several engines built by Russell Anderson, including this Olds hit n’ miss, are on display in the Miniature Engineering Craftsmanship Museum.
Olds Hit-n-Miss Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.86
Donor: Mark Petersen
An Olds hit-n-miss engine that was machined by Birk Petersen.
OLDS Stationary Engine
Craftsman: Ron Schindele
Knapp Collection #: 610
Catalog #: 2019.33.7
Contributor: Paul Knapp
This 1/4 scale OLDS stationary engine measures 7-1/2-inches long, 6-inches wide, 5-3/8-inches high, and weighs 7 pounds on the cart.
Open Column Stationary Steam Engine
Craftsman: Rudy Kouhoupt
Donor: Susan Alvaro
This open column stationary steam engine features a trunk type crosshead guide.
Open Column Vertical Steam Engine
Craftsman: Rudy Kouhoupt
Donor: Susan Alvaro
This small open column vertical steam engine further illustrates the range of different projects that Rudy Kouhoupt tackled.
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.
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