TechnoPower 5-Cylinder Radial Prototype Engine
Craftsman: Wally Warner
Knapp Collection #: 184
Catalog #: 2009.9.26
Contributor: Paul Knapp
This prototype marked the beginning of a new line of 1/4 scale engines to power large model aircraft. The engine is about 13″ in diameter with a bore of 1.100″ and a stroke of 1.00″.
Technopower 7-Cylinder Radial Airplane Engine
Craftsman: Technopower Engines
Knapp Collection #: 170
Catalog #: 2011.27.13
Contributor: Paul Knapp
This Technopower 7-cylinder radial engine (SN B7-151) is 7″-long, 8″-wide, 7″-high, and weighs 2 lbs. 8 oz.
Thompson “Tarantula” 9-Engine Radial Model Aircraft Engine
Craftsman: John V. Thompson
Knapp Collection #: 146
Catalog #: 2008.10.44
Contributor: Paul Knapp
“9-engine” is not a typo. This engine consists of nine individual Cox .049 1-cylinder model airplane engines geared together in an aluminum crankcase.
Thompson Designs Flat Four Model Airplane Engine
Craftsman: John V. Thompson
Knapp Collection #: 147
Catalog #: 2008.10.45
Contributor: Paul Knapp
John Thompson used the cylinder assemblies from Honda weed-eater engines to produce this flat four aero engine. His custom crankcase holds the oil for lubrication and the engine runs gasoline with spark ignition.
Three Hirtenberger Patronen VT21 Engines
Craftsman: Hirtenberger Patronen
Knapp Collection #: 396, 397, 398
Catalog #: 2016.8.6
Contributor: Paul Knapp
Three VT21 engines developed by Hirtenberger Patronen, Austria, are shown on a wooden display base. The prototype on the left was manually machined from aluminum and steel bar stock.
Three Morton M1 Model Airplane Engines
Craftsman: Dennis Fadden, Bruce Satra
Knapp Collection #: 415, 87, 413
Catalog #: 2016.8.11a ; 2016.8.11b ; 2016.8.11c
Contributor: Paul Knapp
Three Morton M1 engines sit on a wooden display stand. Mr. Fadden designed several model engines that used Bruce Satra’s Morton castings.
Titan Twin Engine
Craftsman: Ramon Hoagland
Knapp Collection #: 739
Catalog #: 2023.2.5
Contributor: Paul Knapp
This Titan Twin engine is 16″-long, 11″-wide, 8.5″-high, and weighs about 15 lbs.
TMN 4-Cycle, Sleeve-Valve Cutaway Engine
Craftsman: Petr Chvatal
Knapp Collection #: 251
Catalog #: 2011.27.29
Contributor: Paul Knapp
The TMN 4-cycle, sleeve-valve cutaway airplane engine was built by Petr Chvatal. After completing only 10 engines, Petr produced a couple of the cutaways to demonstrate its operation.
Trimble Prototype Single-Cylinder Engine
Craftsman: George Trimble
Knapp Collection #: 157
Catalog #: 2009.9.25
Contributor: Paul Knapp
George Trimble made his first engine in 1958. It’s an air-cooled, four-cycle single that burns gasoline on spark ignition.
Triscamp 3-Cylinder Miniature Radial Engine
Craftsman: Robert and Frances Washburn
Knapp Collection #: 62
Catalog #: 2008.10.19
Contributor: Paul Knapp
Mr. Washburn designed and fabricated eight of these tiny 3-cylinder, 2-cycle, methanol-burning radial engines by gearing together three individual engines into one housing.
Triscamp Engine
Craftsman: Robert and Frances Washburn
Knapp Collection #: 713
Catalog #: 2022.8.9
Contributor: Paul Knapp
Robert Washburn designed and fabricated eight of these miniature 3-cylinder, 2-cycle, methanol-burning Triscamp radial engines.
Twin-Column 2-Cylinder Self-Starting Steam Engine
Craftsman: Ramon Hoagland
Knapp Collection #: 666
Catalog #: 2021.9.4
Contributor: Paul Knapp
This twin-column 2-cylinder self-starting steam engine was made by Ramon Hoagland, of Colorado, in 2013.
U-22 Turbojet Model Aircraft Engine
Craftsman: Dennis Fadden
Knapp Collection #: 58
Catalog #: 2009.9.06
Contributor: Paul Knapp
Dennis Fadden built this model jet engine from plans that were most likely from the 1950s.
V-4 Stirling Cycle Engine
Craftsman: Alphonse C. Vassallo
Knapp Collection #: 233
Catalog #: 2009.9.38
Contributor: Paul Knapp
Among the numerous Stirling cycle engines that Al Vassallo designed and built is this large V-4 workhorse that he attached to a small generator and water pump.
V12 Air-Cooled OHV Model Boat Engine
Craftsman: Unknown
Knapp Collection #: 177
Catalog #: 2008.10.51
Contributor: Paul Knapp
This 60-degree, overhead valve V-12 engine was machined from billet aluminum (bar stock) with cast iron lined cylinders.
Valentine “Blitz” 1-Cylinder Diesel Engine
Craftsman: Ron Valentine
Knapp Collection #: 115
Catalog #: 2008.10.33
Contributor: Paul Knapp
The Valentine “Blitz” Diesel engine was designed and built by Ron Valentine. Mr. Valentine’s engines are among the smallest in the world.
Valentine “Rasant” 1-Cylinder Diesel Engine
Craftsman: Ron Valentine
Knapp Collection #: 116
Catalog #: 2008.10.34
Contributor: Paul Knapp
The Valentine “Rasant” Diesel engine is among the smallest in the world. The 2-cycle engine burns a special Diesel fuel that is less viscous and produces combustion when head and pressure are applied.
Valentine Mini Single Engine
Craftsman: Ronald Valentine
Knapp Collection #: 245
Catalog #: 2011.32.3
Contributor: Paul Knapp
The Valentine mini single-cylinder model airplane engine runs on methanol with glow ignition using custom made glow plugs.
Vega .61 4-Cycle, Side-Valve Model Airplane Engine
Craftsman: John Harbone
Knapp Collection #: 249
Catalog #: 2011.27.27
Contributor: Paul Knapp
The Vega .61 4-cycle, side-valve model airplane engine was built by John Harbone The engine was machined in small quantities from aluminum and steel bar stock
Showing 20 of 375 exhibits.