Robarts R780 7-Cylinder Radial Engine
Craftsman: Bob Walker
Knapp Collection #: 13
Catalog #: 2011.27.3
Contributor: Paul Knapp
This Robarts R780 7-cylinder radial engine has a bore of 1.125 inches and stroke of 1.125 inches for a total displacement of 7.8 cubic inches.
Rodless Rotary Engine
Craftsman: Peter Grunstra
Catalog #: 2013.42.1
Donor: Peter Grunstra
This 2-cycle rodless rotary engine, suitable for aircraft or autos, is a prototype built by Peter Grunstra.
Root & Vandervoort 2 HP Hit N’ Miss Engine (Full-Size)
Craftsman: Root & Vandervoort; Restored by Bill Fowler
Catalog #: 2011.4.1
Donor: Les Cade
This full-size Root & Vandervoort 2 HP hit n’ miss engine was restored by Bill Fowler, and donated to the museum by Les Cade. The engine can run at 450 rpm, and the serial number is BL1337.
Root & Vandervoort Vertical Gas Engine
Craftsman: Russell Anderson
Catalog #: 2019.21.4
Contributor: Steve Anderson
Several engines built by Russell Anderson, including this Root & Vandervoort vertical gas engine, are on display in the Craftsmanship Museum.
Ross 2-Cylinder, 2-Cycle Target Drone Engine
Craftsman: Lou Ross
Knapp Collection #: 196
Catalog #: 2008.16.39
Contributor: Paul Knapp
Lou Ross designed and developed this large 3.5 cubic inch opposed twin for possible use as a target drone engine for military applications.
Ross 4-Cylinder, 2-Cycle Target Drone Engine
Craftsman: Lou Ross
Knapp Collection #: 197
Catalog #: 2008.16.40
Contributor: Paul Knapp
This is a 7.0 cubic inch opposed four-cylinder, two-cycle engine designed to power a target drone. It burns methanol on glow ignition.
Royer Model Airplane Engine
Craftsman: Royer Motors
Knapp Collection #: 318
Catalog #: 2012.33.3
Contributor: Paul Knapp
This Royer model airplane engine is 7”-long and 7”-high. The engine has a .785 cu. in. displacement and consists of a sand cast crankcase, front cover, and spoke-fin head.
Saito FA-120, 4-Cycle Cutaway Airplane Engine
Craftsman: Saito Engines
Knapp Collection #: 250
Catalog #: 2011.27.28
Contributor: Paul Knapp
The Saito FA-120, 4-cycle cutaway model airplane engine was manufactured by Saito Engines of Japan, circa 2000.
Satra “R-5” Model Radial Airplane Engine
Craftsman: Bruce Satra
Knapp Collection #: 202
Catalog #: 2008.16.44
Contributor: Paul Knapp
Intrigued by the Morton M5, Bruce Satra built a more robust design which he dubbed the Satra R-5. The bore is .700 and stroke is .625, making the total displacement 1.2 cubic inches.
Satra 0-440, 4-Cylinder Opposed Model Aircraft Engine
Craftsman: Bruce Satra
Knapp Collection #: 63
Catalog #: 2008.16.09
Contributor: Paul Knapp
Bruce Satra, of Utah, engineered and fabricated this 40 cc, 4-cylinder opposed model aircraft engine in the mid-1980s.
Satra 0-440, 4-Cylinder Opposed Model Airplane Engine
Craftsman: Bruce Satra
Knapp Collection #: 203
Catalog #: 2008.16.45
Contributor: Paul Knapp
This 0-440 differs from Bruce Satra’s first version in that it burns gasoline on spark ignition rather than methanol on glow ignition. The engine is 11″-long, 8″-wide, and 7″-high.
Schillings 3-Cylinder (FAN) Engine
Craftsman: Hubert Schillings
Knapp Collection #: 88
Catalog #: 2011.35.3
Contributor: Paul Knapp
This 3-cylinder (fan-configuration) Dual Overhead Cam (DOHC) engine has all cylinders above the center line but uses a master rod and 2 articulating rods like a radial engine.
Schillings 4-Cylinder Inline DOHC Engine
Craftsman: Hubert Schillings
Knapp Collection #: 73
Catalog #: 2008.16.11
Contributor: Paul Knapp
This engine, which was completed in 1975, is 11”-long, 6”-wide, 6”-high, and weighs 7 lbs. 2 oz. The 4-cylinder inline dual overhead cam (DOHC) engine has cylinders in a row vertical to the crankshaft.
Schillings 4-Cylinder Inline SOHC Engine
Craftsman: Hubert Schillings
Knapp Collection #: 218
Catalog #: 2011.27.19
Contributor: Paul Knapp
This 4-cylinder inline single overhead cam (SOHC) has cylinders in a row vertical to the crankshaft. The engine is 12″-long, 8″-wide, 6″-high, and weighs 5 lbs.
Schillings 6-Cylinder DOHC Engine
Craftsman: Rolf Luther
Knapp Collection #: 185
Catalog #: 2008.16.33
Contributor: Paul Knapp
This 6-cylinder inline Dual Overhead Cam (DOHC) design has cylinders laid out in a straight line with two camshafts that operate the valves.
Schillings 6-Cylinder Opposed DOHC Engine
Craftsman: Hubert Schillings
Knapp Collection #: 119
Catalog #: 2009.9.20
Contributor: Paul Knapp
Hubert Schillings designed several miniature engines. Made in 1975, this opposed DOHC engine is 9”-long, 9”-wide, and 7”-high.
Schillings V-Twin DOHC Engine
Craftsman: Hubert Schillings
Knapp Collection #: 89
Catalog #: 2011.35.4
Contributor: Paul Knapp
This 2-cylinder “V” Dual Overhead Cam (DOHC) has cylinders 90 degrees apart and in line with the crankshaft, similar to a V6 or V8 configuration.
Schillings V8 DOHC Engine
Craftsman: Hubert Schillings
Knapp Collection #: 239
Catalog #: 2011.27.22
Contributor: Paul Knapp
This V8 Dual Overhead Cam engine has two rows of cylinders 90 degrees apart. Each row has two camshafts to operate the valves.
Schindele Cube 4-Cycle Engine
Craftsman: Ron Schindele
Knapp Collection #: 568
Catalog #: 2019.9.8
Contributor: Paul Knapp
This engine is appropriately named the Cube because it is a 1 x 1 bore and stroke and, simply, a square design.
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