Neptune AA1 Outboard Boat Motor
Craftsman: Muncie Gear Works
Knapp Collection #: 352
Catalog #: 2012.33.19
Contributor: Paul Knapp
The Neptune AA1 outboard boat motor is a 1.7 HP model. It’s a water-cooled, two-cycle gas burner that measures barely 23-inches tall.
Non-Compression 2-Cycle Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.67
Donor: Mark Petersen
This non-compression 2-cycle internal combustion engine was based on a design by Rudy Kouhoupt.
Novoexport .027 cc CO2 Engine
Craftsman: Novoexport
Catalog #: 2009.12.1
Donor: Richard T. Mack
This Russian made Novoexport engine is still brand new in the original package with all Russian writing.
Novoexport 2.5cc 2-cycle Engine
Craftsman: Novoexport
Catalog #: 2009.12.2
Donor: Richard T. Mack
This Novoexport 2.5KP 2-cycle, 1-cylinder engine was donated by Mr. Mack. A very long aluminum tuned exhaust pipe is also included.
O.S. 46AX Model Airplane Engine
Craftsmen: Shigeo Ogawa, O.S.
Catalog #: 2007.7.1
Donor: Art Pesch
This 2-cycle O.S. 46AX model airplane engine is in new condition with the original box.
O.S. 49-PI Type II Wankel Engine
Craftsmen: Shigeo Ogawa, O.S.
Catalog #: 2010.9.2
Donor: Joshua Vest
This unique model airplane engine is an O.S. 49-PI Type II Wankel engine.
O.S. FS-120S SP Engine
Craftsmen: Shigeo Ogawa, O.S.
Catalog #: 2010.19.1
Donor: Jerry Nelson
This O.S. FS-120S SP model airplane engine is a supercharged 4-stroke.
O.S. FS-91 Cutaway Model Airplane Engine
Craftsmen: Shigeo Ogawa, O.S.
Knapp Collection #: 264
Catalog #: 2011.27.35
Contributor: Paul Knapp
This four-stroke O.S. FS-91 model airplane engine has a partial cutaway of the cylinder block to expose the piston, crankshaft, and camshaft.
O.S. MAX 91 VR-DF “Round Head” Engine
Craftsmen: Shigeo Ogawa, O.S.
Donor: Joe Martin
An O.S. MAX 91 VR-DF “Round Head” model airplane engine.
O.S. Wankel Model Airplane Engine
Craftsmen: Shigeo Ogawa, O.S.
Catalog #: 2013.49.14
Contributor: Daniel "Buzz" Brunkow
Mr. Brunkow’s collection also includes this OS .3 cubic inch (4.9cc) Wankel rotary model aircraft engine.
Odd Ball Twin Engine
Craftsman: Ron Schindele
Knapp Collection #: 697
Catalog #: 2022.8.8
Contributor: Paul Knapp
This Odd Ball twin engine is a 2-cylinder, 4-stroke air-cooled overhead valve engine with a bore of .687 and stroke of .708.
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.
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.
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
This open column stationary steam engine features a trunk type crosshead guide.
Open Column Vertical Steam Engine
Craftsman: Rudy Kouhoupt
This small open column vertical steam engine further illustrates the range of different projects that Rudy Kouhoupt tackled.
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