.040 Opposed 2-Cylinder, 2-Cycle Aero Engine
Craftsman: John Swartzwelder
Knapp Collection #: 206
Catalog #: 2008.16.49
Contributor: Paul Knapp
John Swartzwelder fabricated several small multi-cylinder aircraft engines from commercially available Cox .049, .020, and .010 cc model airplane engines.
.098 Opposed 2-Cylinder, 2-Cycle Aero Engine
Craftsman: John Swartzwelder
Knapp Collection #: 205
Catalog #: 2008.16.47
Contributor: Paul Knapp
John Swartzwelder fabricated several small multi-cylinder aircraft engines from commercially available Cox .049, .020, and .010 cc model airplane engines.
.098 Vertical 2-Cylinder, 2-Cycle Aero Engine
Craftsman: John Swartzwelder
Knapp Collection #: 204
Catalog #: 2008.16.46
Contributor: Paul Knapp
John Swartzwelder fabricated several small multi-cylinder aircraft engines from commercially available Cox .049, .020, and .010 cc model airplane engines.
“Dominator” Model Aircraft Engine
Craftsman: Noel Jensen
Knapp Collection #: 85
Catalog #: 2008.10.26
Contributor: Paul Knapp
To achieve more power, Noel Jensen added two more cylinders and produced this flat 4-cylinder opposed engine dubbed the “Dominator.”
“Green Dragon” Model Airplane Engine
Craftsman: John Nuovo
Knapp Collection #: 132
Catalog #: 2008.10.37
Contributor: Paul Knapp
The Green Dragon burns methanol with castor oil mixed in for lubrication on spark ignition. The engine is 7″-long, 5″-wide, and 6″-high.
“Little Dominator” Model Aircraft Engine
Craftsman: Noel Jensen
Knapp Collection #: 84
Catalog #: 2008.10.25
Contributor: Paul Knapp
A rotary valve, twin-cylinder, air-cooled engine named “Little Dominator.” The 1″-bore and 1.1″-stroke engine turns a 16/6 propeller at 6,000 rpm.
“Maxse T-Seven” 7-Cylinder Radial Model Airplane Engine
Craftsman: Maxse Tayler
Knapp Collection #: 126
Catalog #: 2008.10.36
Contributor: Paul Knapp
Maxse Tayler used the piston and cylinder assemblies from the commercially manufactured Saito 120 model airplane engines to build this 7-cylinder radial.
“Micro Cirrus” V8 Engine
Craftsman: Profi M. E.
Knapp Collection #: 112
Catalog #: 2008.10.31
Contributor: Paul Knapp
This 1/12 scale “Micro Cirrus” engine runs on methanol with glow ignition, and is among the smallest multi-cylinder 4-cycle engines in the world.
“Rasant MK III” Diesel Radial Model Airplane Engine
Craftsman: Ron Valentine
Knapp Collection #: 135
Catalog #: 2008.10.39
Contributor: Paul Knapp
This “Rasant MKIII” Diesel engine operates like an inline engine. It is 2.5″-long, 3″-wide, and 2″-high.
“Kitty Hawk” 4-Cylinder Inline Engine
Craftsman: Lloyd Butler
Knapp Collection #: 57
Catalog #: 2008.10.17
Contributor: Paul Knapp
The engine used in the 1903 Wright brothers’ flyer was a 4-cylinder, 4-cycle, internal-combustion engine that lifted the world’s first airplane and its pilot into the sky in 1903.
1/4 Scale 1931 Aeroneca E113 Aero Engine With Propeller
Craftsman: Les Chenery
Knapp Collection #: 451
Catalog #: 2016.8.28
Contributor: Paul Knapp
This 1/4 scale 1931 Aeroneca E113 aero engine measures 8-1/2″-long, 11″-wide, and 9″-high. It has a bore and stroke of 1-1/8″ for a total displacement of 2.2 cubic inches.
1/4 Scale Anzani 3-Cylinder Radial Aircraft Engine
Craftsman: Roger Butzen
Knapp Collection #: 69
Catalog #: 2008.16.10
Contributor: Paul Knapp
This 1/4 scale Anzani 3-cylinder radial aircraft engine runs on gasoline with spark ignition and pressurized lubrication system. The engine is 15”-long, 23”-wide, 12”-high, and weighs 14 lbs. 2 oz.
1/4 Scale Caminez 4-Cylinder Radial Aircraft Engine
Craftsman: Wally Warner
Knapp Collection #: 193
Catalog #: 2008.16.37
Contributor: Paul Knapp
This 1/4 scale Caminez 4-cylinder radial aircraft engine was designed and built by Wally Warner. The engine is 10″-long, 8″-wide, 9″-high, and weighs 7 lbs. 5 oz.
1/4 Scale Cirrus Inline 4 Aero Engine
Craftsman: Butch Wilson
Knapp Collection #: 736
Catalog #: 2023.2.2
Contributor: Paul Knapp
Mr. Wilson machined and fabricated all components to produce this model. It measures 13.5″-long, 4.5″-wide, 9″-high, and weighs about 15 lbs.
1/4 Scale Cirrus Model Airplane Engine
Craftsman: Charles “Chuck” Harty
Knapp Collection #: 521
Catalog #: 2017.27.3
Contributor: Paul Knapp
This 1/4 scale Cirrus model airplane engine was designed by Merritt Zimmerman and built by Charles Harty. It measures about 12.5”-long, 9”-high, 4.3”-wide, and weighs 10 pounds.
1/4 Scale Wright Brothers Flyer by Robert Cooper
Craftsman: Robert Cooper
Catalog #: 2014.9.1
Contributor: Paul Knapp
This 1/4 scale model Wright Brothers Flyer has a nearly 12′ wingspan, and is historically correct in every detail. It is one of two identical models built by Robert Cooper.
1/6 Scale Cirrus Model Airplane Engine
Craftsman: Charles “Chuck” Harty
Knapp Collection #: 519
Catalog #: 2017.27.14
Contributor: Paul Knapp
This is Chuck Harty’s rendition of the 1/6 scale Cirrus designed by Merritt Zimmerman. It is 7”-long, 6”-high, 3”-wide, and weighs 2 pounds 9 ounces on the aluminum base.
100cc 2-Cylinder Opposed Aircraft Engine
Craftsman: Unknown
Knapp Collection #: 187
Catalog #: 2008.16.35
Contributor: Paul Knapp
Commercially available cylinders, possibly from a motorcycle, were used to produce this aircraft engine in Germany.
14-Cylinder, Twin-Row Radial Engine
Craftsman: Dennis Fadden
Knapp Collection #: 04
Catalog #: 2008.16.01
Contributor: Paul Knapp
This 1/8 scale 14-cylinder radial engine model operates on regular gasoline with spark ignition and swings a 12-inch diameter propeller.
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