Custom-Built Pulse Jet Engine
Craftsman: Reggy Luycx
Knapp Collection #: 562
Catalog #: 2019.33.1
Contributor: Paul Knapp
This custom-built pulse jet engine was made by Reggy Luycx, BE, in 2005.
Cylindrical Cam Stirling Engine
Craftsman: Alphonse C. Vassallo
Knapp Collection #: 232
Catalog #: 2009.9.37
Contributor: Paul Knapp
This cylindrical cam Stirling engine is a type of reciprocating engine that replaces the common crankshaft with a circular plate. The pistons press against the plate in sequence, forcing it to rotate around its center.
Cylindrical Rotary Engine
Craftsman: Alphonse C. Vassallo
Knapp Collection #: 234
Catalog #: 2009.9.39
Contributor: Paul Knapp
This cylindrical rotary engine is 7″-long, 5″-wide, 3.5″-high, and weighs 5 lbs. Internally, the engine resembles a positive-flow (vane type) rotary pump.
de Havilland Gipsy I 4-Cylinder Inline Engine
Craftsman: Pat Loop
Knapp Collection #: 43
Catalog #: 2008.10.11
Contributor: Paul Knapp
Pat Loop handcrafted this 1/4 scale Gipsy engine right down to the spark plugs. It runs on gasoline with spark ignition.
Dennymite Engine Collection Display
Craftsman: Walter Righter; Display by James and Sally Duncan
Knapp Collection #: 660
Catalog #: 2021.9.2
Contributor: Paul Knapp
A collection of Dennymite engines on a display board.
DK-17 4-Cycle, Air-Cooled Model Airplane Engine
Craftsman: Dietmar Kolb
Knapp Collection #: 267
Catalog #: 2011.27.37
Contributor: Paul Knapp
The DK -17 4-cycle air-cooled model airplane engine was designed to burn methanol on glow ignition. It has a bore of 13.5mm and a stroke of 11.4mm for a total displacement of 1.63cc.
Dragonfly Cox .049 Tether Car
Craftsman: Doug Parker
Knapp Collection #: 418
Catalog #: 2016.8.13
Contributor: Paul Knapp
The “Dragonfly” Cox .049 tether car measures about 3.25″-wide in front, 2.25″-wide in the rear, 2.625″-high, 12.25″-long, and weighs about 18 ounces.
Duesenberg Tether Car and Engine
Craftsman: Wayne Short
Knapp Collection #: 425
Catalog #: 2016.8.18
Contributor: Paul Knapp
This Duesenberg tether car and engine is about 10″-wide, 8″-high, and 21″-long. It sports a faithful reproduction of the Duesenberg .60 cubic inch engine.
Dyna-Jet Pulse Jet Speed Plane
Craftsman: Unknown
Knapp Collection #: 491
Catalog #: 2016.44.5
Contributor: Paul Knapp
This Pulse Jet Speed Plane measures 24.5″-long, 19″-wide, 4.5″-high, and weighs 1 pound, 10-1/2 ounces dry. The fuselage is made from sheet brass that was formed and soldered together.
Edward’s Style 5-Cylinder Radial Airplane Engine
Craftsman: Charles “Chuck” Harty
Knapp Collection #: 524
Catalog #: 2017.27.16
Contributor: Paul Knapp
This Edward’s style 5-cylinder radial airplane engine closely resembles Forest Edward’s radial engine in size and configuration; however, it does not have a pressure lubrication system.
Edwards 2-Cylinder Supercharged Engine
Craftsman: Forrest Edwards
Knapp Collection #: 97
Catalog #: 2011.32.1
Contributor: Paul Knapp
This Edwards 2-cylinder supercharged opposed model aircraft engine is a one-of-a-kind prototype that runs on unleaded gasoline with spark ignition and has a dry sump lubrication system.
Edwards 5-Cylinder Radial
Craftsman: Forest Edwards
Knapp Collection #: 02
Catalog #: 2008.10.1
Contributor: Paul Knapp
1/4 Scale 5-cylinder radial airplane engine.
Edwards FA90-3, 3-Cylinder Radial Aircraft Engine
Craftsman: Forest Edwards
Knapp Collection #: 192
Catalog #: 2008.16.36
Contributor: Paul Knapp
Forest Edwards’ first homemade model airplane engine. He utilized the cylinder heads and cams from three Saito FA-30 single cylinder model airplane engines to produce this radial.
Eldon I 2636 6-Cylinder Model Boat Engine
Craftsman: Eldon Dwyer
Knapp Collection #: 75
Catalog #: 2008.10.23
Contributor: Paul Knapp
After building a prototype from bar stock, Eldon Dwyer made the patterns and castings to produce this 6-cylinder model boat engine.
Eldon I 2636 Prototype 6-Cylinder Inline Boat Motor
Craftsman: Eldon Dwyer
Knapp Collection #: 74
Catalog #: 2011.27.6
Contributor: Paul Knapp
Eldon Dwyer designed this two-cycle, water-cooled engine to power his model hydroplane in the early 1980s.
ELJO Single-Cylinder Model Marine Engine
Craftsman: Unknown
Knapp Collection #: 209
Catalog #: 2011.27.16
Contributor: Paul Knapp
This 15cc single-cylinder, water-cooled model boat engine is an OHV (overhead valve) 4-stroke designed to burn gasoline on a magneto spark ignition.
Elto Cub 1/3-Scale Outboard Boat Motor
Craftsman: Ted Maciag
Knapp Collection #: 268
Catalog #: 2011.27.38
Contributor: Paul Knapp
This 1/3 scale model Elto Cub outboard boat motor is a single-cylinder, water-cooled 2-cycle with a bore of about .375″ and stroke of about .330″.
Elto Pal Outboard Boat Motor
Craftsman: Evinrude Light Twin Outboard Co.
Knapp Collection #: 292
Catalog #: 2011.27.42
Contributor: Paul Knapp
This single-cylinder water-cooled motor is only 22″-tall, weighs about 14 pounds, and produces about 1 HP.
Erickson FE200 (MCC) Prototype Engine
Craftsman: Erickson Motors
Knapp Collection #: 117
Catalog #: 2009.9.19
Contributor: Paul Knapp
This Erickson FE200 (MCC) prototype migrating combustion chamber engine was manufactured by Erickson Motors. The engine is 9”-long, 8”-wide, and 7”-high.
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