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.
18-Cylinder, Two-Row Radial Engine
Craftsman: Harold Beckett
Knapp Collection #: 41
Catalog #: 2008.16.06
Contributor: Paul Knapp
Harold Beckett handcrafted this 1/4 scale engine from drawings provided by Sam and Lee Hodgeson. The engine operates on regular gasoline with dual spark ignition.
18th Century Navy Mount Canon Kit
Craftsman: Mike Showah, American Edelstaal
Knapp Collection #: 306
Catalog #: 2012.33.1
Contributor: Paul Knapp
This cannon kit for a 13th century navy mount was distributed by American Edelstaal. The cannon is 7”-long and 5”-wide.
1937 Ford Flathead V8 in 1/4 Scale
Craftsman: Roger Butzen
Knapp Collection #: 759
Catalog #: 2024.5.6
Contributor: Paul Knapp
Roger Butzen, of Texas, built this 1937 Ford Flathead V8 engine in 1/4 scale sometime in the 1990s.
1937 Harley-Davidson “Knucklehead” Motorcycle Engine
Craftsman: Replica Engines
Knapp Collection #: 99
Catalog #: 2009.9.13
Contributor: Paul Knapp
This 1/4 scale model 1937 Harley-Davidson “Knucklehead” motorcycle engine is 9”-long, 9”-wide, and 9”-high.
2-Cylinder Flame Licker Engine
Craftsman: Alphonse C. Vassallo
Knapp Collection #: 229
Catalog #: 2009.9.34
Contributor: Paul Knapp
This 2-cylinder flame licker engine is 12″-long, 6.5″-wide, 3.5″-high, and weighs 7 lbs. These engines are variously called vacuum, flame-licker or flame-gulper engines.
2-Cylinder Opposed Model Airplane Engine
Craftsman: Barry Robinson
Knapp Collection #: 144
Catalog #: 2008.10.42
Contributor: Paul Knapp
This engine has a bore of 19 mm and a stroke of 19.2 mm for a total displacement of 10.9 cc. The cylinders have chrome plated brass liners, and the pistons have compression rings.
2-Cylinder Opposed Model Airplane Engine
Craftsman: Alphonse C. Vassallo
Knapp Collection #: 231
Catalog #: 2009.9.36
Contributor: Paul Knapp
This two-cylinder, four-cycle engine is completely machined from steel and aluminum bar stock, including Al’s custom-designed carburetor.
2-Cylinder Reversible Stirling Engine
Craftsman: Alphonse C. Vassallo
Knapp Collection #: 230
Catalog #: 2009.9.35
Contributor: Paul Knapp
This 2-cylinder reversible Stirling cycle engine is 21″-long, 8″-wide, 7″-high, and 12 lbs.
2-Cylinder Vertical Steam Engine
Craftsman: Alphonse C. Vassallo
Knapp Collection #: 228
Catalog #: 2009.9.33
Contributor: Paul Knapp
Stuart Models provided the castings for this model D10 vertical steam engine. The engine is 8.5″-long, 5″-wide, 6″-high, and weighs 4.5 lbs.
252 Single-Cylinder Model Airplane Engine
Craftsman: Suevia
Knapp Collection #: 220
Catalog #: 2009.9.30
Contributor: Paul Knapp
The Suevia 252 single-cylinder model airplane engine was designed and built in the 1980s. The engine is 6”-long, 3.5”-wide, and 6”-high.
3-Cylinder Radial Model Airplane Engine
Craftsman: Unknown
Knapp Collection #: 175
Catalog #: 2008.16.28
Contributor: Paul Knapp
This radial engine features a single rocker box that houses both the intake and exhaust rockers, and uses only one large tube to enclose both pushrods.
3-Cylinder Radial Model Airplane Engine
Craftsman: 3W Engines
Knapp Collection #: 12
Catalog #: 2011.27.2
Contributor: Paul Knapp
This spark-ignition 2-cycle engine is composed of three single-cylinder engines geared together within one common crankcase.
3/10 Scale John Deere “E” 1.5 HP Stationary Engine
Craftsman: Bob Haagenson
Knapp Collection #: 447
Catalog #: 2016.8.25
Contributor: Paul Knapp
Among the many engines Bob Haagenson built is this 3/10 scale John Deere E 1.5 HP stationary engine kitted by Dinky Deeres.
4-Cylinder, Water-Cooled Inline Boat Engine
Craftsman: Unknown
Knapp Collection #: 255
Catalog #: 2011.27.31
Contributor: Paul Knapp
This 4-cycle water-cooled marine engine burns methanol or gasoline on glow ignition and sports an electric starter.
4-Port Riley Model A Racing Engine
Craftsman: Ron Bement
Knapp Collection #: 498
Catalog #: 2016.44.9
Contributor: Paul Knapp
This 4-port Riley Model A racing engine OHV conversion measures 14″-wide, 13″-tall, 18.5″-long, and weighs 25 pounds.
426 Hemi Powered Cobra
Craftsman: Roger Butzen
Knapp Collection #: 783
Catalog #: 2024.5.19
Contributor: Paul Knapp
Roger Butzen built this 426 hemi powered Cobra and modified the miniature car to be operated by radio control.
5-Cylinder Diesel Radial Engine
Craftsman: Ronald Valentine
Knapp Collection #: 253
Catalog #: 2011.27.8
Contributor: Paul Knapp
This is perhaps the smallest Diesel radial engine in the world with a bore of only 5mm and a stroke of 5mm; total displacement of .49ccm.
Showing 20 of 391 exhibits.