Schindele Custom Four-Stroke Engine
Craftsman: Ron Schindele
Knapp Collection #: 630
Catalog #: 2020.4.3
Contributor: Paul Knapp
This Schindele custom four-stroke engine has a bore of .687″, a stroke of 1″, and it burns gasoline vapor for fuel.
Schindele Hit N’ Miss Powered Saw
Craftsman: Ron Schindele
Knapp Collection #: 728
Catalog #: 2022.8.12
Contributor: Paul Knapp
This unique hit n’ miss powered saw was built from Coles Power Model castings. It has a bore of 1.25, and stroke of 1.875, with enough power to be put to use.
Schindele Howell V-Twin Engine
Craftsman: Ron Schindele
Knapp Collection #: 727
Catalog #: 2022.8.11
Contributor: Paul Knapp
This Schindele Howell V-Twin engine has a bore of 1″ with a stroke of 1.25″ and burns gasoline on electronic ignition. It includes an electric fuel pump.
Schindele Twin Engine
Craftsman: Ron Schindele
Knapp Collection #: 566
Catalog #: 2019.9.6
Contributor: Paul Knapp
After restoring a Maytag Model 72 washing machine engine Mr. Schindele was impressed with the hollow crankshaft rotary intake and decided to design his own engine using the same principal.
Schroeder Display of Multi-Cylinder Cox Engines
Craftsman: Roger Schroeder
Knapp Collection #: 377, 378, 379, 380
Catalog #: 2013.53.7
Contributor: Paul Knapp
Mr. Schroeder was well known for his innovative multi-cylinder engines that utilized Cox .020 and .049 engine parts.
Scott-Atwater Bait-A-Matic 35 HP Electric Model Outboard Motor
Craftsman: K&O
Catalog #: 2013.49.3
Contributor: Daniel "Buzz" Brunkow
These realistic electric outboard motors are from the 1950s and 1960s. Originally relatively inexpensive, they are now highly collectible and expensive if you can find one.
Seidel 770 Engine
Craftsman: Wolfgang Seidel
Knapp Collection #: 15
Catalog #: 2022.8.1
Contributor: Paul Knapp
This Seidel ST770 engine is a 7-cylinder 70cc (4.17 cubic inch) radial engine with a speed range or 1,000 to 6,000 revolutions per minute (rpm), using a 26-10 propeller.
Seidel Prototype Radial Engine
Craftsman: Wolfgang Seidel
Knapp Collection #: 283
Catalog #: 2011.32.5
Contributor: Paul Knapp
This pre-production model, built in the early 1980s, is one of Mr. Seidel’s first prototypes intended to introduce his engines at trade fairs and model airplane shows.
Seidel ST 1426 14-Cylinder Radial Model Aircraft Engine
Craftsman: Wolfgang Seidel
Knapp Collection #: 56
Catalog #: 2008.10.16
Contributor: Paul Knapp
The ST 1426 is the largest engine in the series, and perhaps the largest model airplane engine commercially sold.
Seidel ST 525 5-Cylinder Radial Model Airplane Engine
Craftsman: Wolfgang Seidel
Knapp Collection #: 70
Catalog #: 2008.10.22
Contributor: Paul Knapp
The Seidel ST 525 radial airplane engine is among the largest 5-cylinder model airplane engines built to date.
Seidel ST 540 5-Cylinder Radial Model Aircraft Engine
Craftsman: Wolfgang Seidel
Knapp Collection #: 14
Catalog #: 2008.10.5
Contributor: Paul Knapp
The Seidel ST540 has a speed range of 1,100 to 6,800 revolutions per minute, using a 22-6 propeller.
Seidel ST 726 7-Cylinder Radial Model Aircraft Engine
Craftsman: Wolfgang Seidel
Knapp Collection #: 55
Catalog #: 2008.10.15
Contributor: Paul Knapp
The ST 726 weighs approximately 16 pounds. It burns methanol with castor oil mixed in for lubrication, and swings a 32-12 propeller at 4,500 rpm.
Seidel ST 770 7-Cylinder Radial Model Aircraft Engine
Craftsman: Wolfgang Seidel
Knapp Collection #: 15
Catalog #: 2008.10.6
Contributor: Paul Knapp
The Seidel ST 770 has a speed range or 1,000 to 6, 000 revolutions per minute (rpm), using a 26-10 propeller.
Seidel ST 996 9-Cylinder Radial Model Aircraft Engine
Craftsman: Wolfgang Seidel
Knapp Collection #: 16
Catalog #: 2008.10.7
Contributor: Paul Knapp
The ST 996 9-cylinder 96 cc (5.9 cubic inches) is the largest of three in this series of engines.
Silver Angel Gas Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.49
Donor: Mark Petersen
Birk’s rendition of the single-cylinder “Silver Angel” gas engine designed by Bob Shores.
Silver Angel Hit-N-Miss Engine
Craftsman: Jack Randall
Catalog #: 2018.18.4
Donor: Katherine Randall
This single-cylinder, 4-cycle, air-cooled hit-n-miss engine was built by Jack Randall and designed by Bob Shores.
Silver Angel Hit-or-Miss Engine
Craftsman: Pamela Weiss
Catalog #: 2018.24.1
Contributor: Pamela Weiss
This Silver Angel hit-or-miss engine was built by Pamela Weiss.
Silver Angel Vertical Stationary Engine
Craftsman: Ramon Hoagland
Knapp Collection #: 613
Catalog #: 2019.33.10
Contributor: Paul Knapp
This Silver Angel vertical stationary engine was built by Ramon Hoagland, of Colorado, in 2017.
Single-Cylinder .60 Model Airplane Engine
Craftsman: Unknown
Knapp Collection #: 346
Catalog #: 2016.8.3
Contributor: Paul Knapp
This single-cylinder air-cooled .60 size engine was machined from aluminum and steel bar stock and designed to burn methanol on spark ignition.
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