Challenger V8 Prototype Engine
Craftsman: Bachtold, Thoms, and Dettrick
Knapp Collection #: 08
Catalog #: 2011.27.1
Contributor: Paul Knapp
This Challenger V8 prototype engine is 12″-long, 12″-wide, 14″-high, and weighs 25 lbs. The engine was finished in the mid-1960s.
Cirrus 4-Cylinder Inline Aero Engine
Craftsman: Merritt Zimmerman
Knapp Collection #: 10
Catalog #: 2008.10.4
Contributor: Paul Knapp
1/4 scale model built by Merritt Zimmerman, circa 1989, L=19″, W=8″, H=10″
Cirrus 4-Cylinder Inline Aero Engine
Craftsman: Merritt Zimmerman
Knapp Collection #: 34
Catalog #: 2008.10.9
Contributor: Paul Knapp
Merritt Zimmerman produced his own castings to build 75 of these 1/6-scale Cirrus engines (glow ignition).
Cirrus 4-Cylinder Water-Cooled Inline Model Airplane Engine
Craftsman: Merritt Zimmerman
Knapp Collection #: 35
Catalog #: 2009.9.02
Contributor: Paul Knapp
Merritt Zimmerman produced his own castings to build (75) 1/6 scale Cirrus engines (glow ignition) between about 1980 and 1994.
Clarence Lee Sidewinder Airplane Engine
Craftsman: Clarence Lee
Catalog #: 2021.5.1
Donor: Gene and Larry Stoddard
This Sidewinder control line airplane engine was made by Clarence Lee.
Clarke 1-Cylinder Trolling Boat Motor
Craftsman: Profi M. E.
Knapp Collection #: 91
Catalog #: 2008.10.27
Contributor: Paul Knapp
A 1/3 scale Clarke 1-cylinder trolling boat motor. The propeller is mounted directly to the crankshaft and the entire engine is submerged under water for cooling.
Clarke 2-Cylinder Trolling Boat Motor
Craftsman: Profi M. E.
Knapp Collection #: 92
Catalog #: 2008.10.28
Contributor: Paul Knapp
Like the 1/3 scale Clarke 1-cylinder engine, the full-size version of this motor, a Clarke 2-cylinder, was originally manufactured in Michigan in the 1930s. It operates in the same manner, with the entire motor operating underwater to keep it cool while air is ducted down through the cast case.
Coholic 3-Cylinder Radial Engine
Craftsman: Andrew Coholic
Knapp Collection #: 37
Catalog #: 2008.16.05
Contributor: Paul Knapp
Andrew Coholic designed and built this tiny 2-cycle radial engine by mounting three Cox .049 engines into a common crankcase. The engines are geared together with a common propeller shaft.
Cole Hit N’ Miss Engine
Craftsman: Russell Anderson
Catalog #: 2019.21.7
Contributor: Steve Anderson
Several engines built by Russell Anderson, including this Cole hit n’ miss engine, are on display in the Miniature Engineering Craftsmanship Museum.
Comber Rotary Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.52
Donor: Mark Petersen
Birk Petersen built this miniature Comber rotary engine.
Compressed Air Motor
Craftsman: Rudy Kouhoupt
Donor: Susan Alvaro
This small motor is easy to build and runs great on compressed air.
Conley “427” V8
Craftsman: Gary Conley
Knapp Collection #: 315
Catalog #: 2011.35.10
Contributor: Paul Knapp
In 1988-89, Gary Conley fabricated the molds and patterns to produce a casting kit for this 4.27 cubic inch V8 and made it available in several variations.
Conley Small-Block V8 Engine
Craftsman: Paul Knapp
Knapp Collection #: 07
Catalog #: 2008.10.3
Contributor: Paul Knapp
A methanol-burning supercharged small-block V8.
Conley V8 Engine
Craftsman: Gary Conley
Knapp Collection #: 48
Catalog #: 2008.10.14
Contributor: Paul Knapp
Gary Conley built several machined V8 engines. In 1988-89, he fabricated the molds and patterns to produce a casting kit for his V8.
Continental C-85 Opposed Aircraft Engine
Craftsman: Dennis Fadden
Knapp Collection #: 54
Catalog #: 2008.16.08
Contributor: Paul Knapp
Dennis Fadden’s 1/4 scale Continental C-85 is a “true-to-scale” model of the full-size version that was commonly used in light aircraft during the post-World War II period—most notably in the Piper Cub.
Coombs Table Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.96
Donor: Mark Petersen
Birk built this black Coombs table engine. It’s a taller engine with vertical slide.
Cooney .049 Diesel Model Airplane Engine
Craftsman: Ralph Cooney
Catalog #: 2013.1.1
Donor: Ralph Cooney
This model Diesel airplane engine displaces just over .049 cubic inches or .81 cc. The bore is .335″ and the stroke is 0.50″.
Cooney .61 Engine (Rear Port, Cast-in Carburetor)
Craftsman: Ralph Cooney
Catalog #: 2012.7.1 and 2012.7.2
Donor: Ralph Cooney
Ralph Cooney designed a number of experimental engines using the investment casting method. He cast the components using the lost wax method.
Cooney .61 Engine (Rear Port)
Craftsman: Ralph Cooney
Catalog #: 2012.7.3 and 2012.7.5
Donor: Ralph Cooney
Another rear exhaust port design, this one did not include a cast-in carburetor body. The rear exhaust port was angled upward and had a rotary restrictor plate.
Showing 20 of 678 exhibits.