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.
Cooney .61 Engine (Side Port)
Craftsman: Ralph Cooney
Catalog #: 2012.7.4
Donor: Ralph Cooney
This engine design of Ralph Cooney’s incorporates a side exhaust port with a T-shaped bypass and a two-piece crankcase.
Cooney .61 Mold and Wax Masters
Craftsman: Ralph Cooney
Catalog #: 2012.7.6 and 2012.7.7
Donor: Ralph Cooney
The molds shown here were made for the Cooney .61 side port engine. The cores must be made in pieces so they can be extracted at various angles from the wax master.
Cooney Bourke .09 Model Airplane Engine
Craftsman: Ralph Cooney
Catalog #: 2013.2.1
Donor: Ralph Cooney
The Bourke engine was developed as a super-efficient, high power per weight engine for automobiles.
Cox .020 Model Airplane Engine
Craftsmen: Leroy Cox, L.M. Cox Manufacturing
Catalog #: 2010.9.1
Donor: Joshua Vest
This Cox .020 model airplane engine is still in new condition in the original plastic box.
Cox .049 Baby Bee Engine
Craftsmen: Leroy Cox, L.M. Cox Manufacturing
Catalog #: 2008.20.1
Donor: Bill Holcomb
The Cox .049 “Baby Bee” model airplane engine with prop.
Cox .75 5-Cylinder Radial Engine
Craftsman: Paul Daniels
Knapp Collection #: 26
Catalog #: 2011.27.5
Contributor: Paul Knapp
This Cox .75 radial aircraft engine is 7″-long, 8″-wide, 9″-high, and weighs 7 lbs. 8 oz. The “Cox .75” consists of five Cox .15 cubic-inch engines geared together.
Cox Tee Dee .09 Engine
Craftsmen: Leroy Cox, L.M. Manufacturing Company
Catalog #: 2012.23.2
Donor: Joe Bridi
This is the smallest of the Cox “Tee Dee” engine series. It turns up to 30,000 RPM with a 3 x 1.25 prop.
Cox Thimble Drome .049 Engine
Craftsman: Leroy Cox
Catalog #: 2012.29.3
Contributor: Andy Moore
This reed valve engine features a rear carburetor fed from a remote fuel tank rather than one attached to the engine. It is displayed with a cut-down 4-bladed propeller.
Curtiss OX-5 V8 Model Airplane Engine
Craftsman: Replica Engines
Knapp Collection #: 17
Catalog #: 2011.27.4
Contributor: Paul Knapp
This is a 1/4 scale miniature of the Curtiss OX-5 water-cooled V8 used in the standard Curtiss J.N. “Jenny” aircraft.
Custom 5-Cylinder Radial Airplane Engine
Craftsman: Charles “Chuck” Harty
Knapp Collection #: 527
Catalog #: 2017.27.12
Contributor: Paul Knapp
Chuck’s custom 5-cylinder radial engine resembles the Morton M5 but measures 8” in diameter, 8”-long, and weighs 6 pounds 5 ounces on the base.
Custom Single-Cylinder .60 Model Aero Engine
Craftsman: Charles “Chuck” Harty
Knapp Collection #: 518
Catalog #: 2017.27.10
Contributor: Paul Knapp
This custom single-cylinder .60 model aero engine measures about 5-1/5”-tall, 5”-wide, 6”-long, and weighs 2.5 pounds on the stand.
Custom-Built OS-MAX Twin Engine
Craftsman: Richard Hoff
Catalog #: 2019.34.2
Donor: Richard Hoff
Richard Hoff made this 2-cylinder engine by combining two single-cylinder engines to create a horizontally opposed twin-cylinder.
Custom-Built Webra 10 Twin Engine
Craftsman: Richard Hoff
Catalog #: 2019.34.1
Donor: Richard Hoff
Richard Hoff has built a pair of custom 2-cylinder engines. He made these by combining two single-cylinder engines to create a horizontally opposed twin-cylinder.
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.
Deezil .049 Engine
Craftsman: Deezil
Catalog #: 2012.19.9
Donor: Joe Bridi
This small .049 Diesel engine is bolted onto a cast metal base. The engine was made in Eastern Europe.
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.
DEW .51 Glow Plug Engine
Craftsman: DEW Corporation
Donor: Joe Martin
This glow plug engine was built by the DEW Corporation in the early 1960s. DEW stands for the initials of the owner, Dale E. Wood.
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