Kalfus Designed 10cc (.60ci) Tether Boat Engine
Craftsman: Ed Kalfus
Knapp Collection #: 375
Catalog #: 2013.53.5
Contributor: Paul Knapp
This 10cc (.60ci) tether boat engine is 5”-long, 3.5”-wide, 5.5”-high, and weighs 1 lb. 10 oz. The small brass carburetor in the back is set to run the engine at low speed.
Kalfus Designed 15cc (.90ci) Radio Control Boat Engine
Craftsman: Ed Kalfus
Knapp Collection #: 374
Catalog #: 2013.53.4
Contributor: Paul Knapp
This 15cc (.90ci) radio control boat engine is 6.5”-long, 6”-wide, 5”-high, and weighs 2 lbs. 4 oz.
Kalfus Designed 30cc (.18ci) Tether Boat Engine
Craftsman: Ed Kalfus
Knapp Collection #: 361
Catalog #: 2013.53.3
Contributor: Paul Knapp
The Kalfus designed 30cc (.18ci) tether boat engine is 9”-long, 4.5”-wide, 7”-high, and weighs 4 lbs. 6 oz. The air-cooled engine burns methanol on glow ignition
Little Eric Nordevall Steam Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.44
Donor: Mark Petersen
Birk built this miniature model of the lower beam steam engine from the ship “Eric Nordevall.”
Magpie 2-Cycle Marine Engine
Craftsman: Gerald Smith
Knapp Collection #: 302
Catalog #: 2011.35.9
Contributor: Paul Knapp
The Magpie 2-cycle marine engine is a ducted fan air-cooled marine engine. It is a 15cc spark ignition engine developed for model boats.
Mercury EFI Model Outboard With K&B .45 engine
Craftsman: AMPS
Catalog #: 2013.49.8
Contributor: Daniel "Buzz" Brunkow
Included here are a Johnson F1 with a .65 OS engine (left), an Evinrude F1 with a .45 OS engine (center), and a Mercury EFI F1 with a .45 K&B powerplant (right).
Miller 2-Cylinder, 2-Cycle Race Engine
Craftsman: Ed Miller
Knapp Collection #: 480
Catalog #: 2016.8.32
Contributor: Paul Knapp
Made from a pair of modified “weed-eater” engines, this 2-cylinder racing engine was slated to power a model speed boat.
Miller DOHC Water-Cooled 2-Cylinder Race Engine
Craftsman: Ed Miller
Knapp Collection #: 478
Catalog #: 2016.8.30
Contributor: Paul Knapp
Suitable for a radio-controlled car or boat, Ed Miller’s first engine is this dual-overhead-cam (DOHC) single with a bore of 1″ and a stroke of 1.25″.
Miniature .020 Outboard Motor
Craftsman: Daniel "Buzz" Brunkow
Catalog #: 2013.41.2
Contributor: Daniel "Buzz" Brunkow
Daniel Brunkow custom built this .020 outboard boat motor based on a Cox engine.
Miniature Model Ski Boat With Outboard Engine
Craftsman: Daniel "Buzz" Brunkow
Catalog #: 2013.41.1
Contributor: Daniel "Buzz" Brunkow
Daniel Brunkow built this miniature wooden model flatbottom ski boat with a tiny outboard engine attached. The mahogany boat is only about 6″ long.
Neptune AA1 Outboard Boat Motor
Craftsman: Muncie Gear Works
Knapp Collection #: 352
Catalog #: 2012.33.19
Contributor: Paul Knapp
The Neptune AA1 outboard boat motor is a 1.7 HP model. It’s a water-cooled, two-cycle gas burner that measures barely 23-inches tall.
Otter 30 Inline 4-Cylinder Boat Engine
Craftsman: Dr. Haydock
Knapp Collection #: 42
Catalog #: 2009.9.04
Contributor: Paul Knapp
Dr. Haydock designed single-cylinder, 2-cylinder and 4-cylinder engines for model boats. He built a handful of these Otter 30 cc engines from his own patterns and castings.
Paddle Wheel Engine
Craftsman: Birk Petersen
Catalog #: 2016.15.5
Donor: Mark Petersen
This riverboat paddle wheel is driven by a dual horizontal steam engine—all built by Birk.
Parohl Single-Cylinder OHV Model Boat Engine
Craftsman: Henry Parohl
Knapp Collection #: 125
Catalog #: 2008.16.20
Contributor: Paul Knapp
To gain efficiency and performance Henry Parohl installed 4 valves in the head of this model boat engine. The engine is 9”-long, 9”-wide, and 10”-high.
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.
Shovelnose Hydro Tether Boat With 2-Cylinder Engine
Craftsman: Unknown
Knapp Collection #: 416
Catalog #: 2016.8.12
Contributor: Paul Knapp
This sleek looking hydro measures 11″-wide, 30.5″-long, and sports a custom built two-cylinder, two-cycle, alternate firing twin with a double throw crank.
Single-Cylinder Marine Gas Engine
Craftsman: Bill Fowler
Catalog #: 2011.4.7
Donor: Les Cade
This single-cylinder marine gas engine was built by Bill Fowler. This particular water-cooled engine features an Amal motorcycle carburetor.
Skylark 2-Cycle Marine Engine
Craftsman: Gerald Smith
Knapp Collection #: 301
Catalog #: 2011.35.8
Contributor: Paul Knapp
The Skylark 2-cycle marine engine was designed and built by Gerald Smith, of the UK. Mr. Smith manufactured over 300 engines from 1922 to the mid-1980s.
Sorrel 2-Cylinder Inline Model Boat Engine
Craftsman: Col. James Sorrel
Knapp Collection #: 275
Catalog #: 2011.27.40
Contributor: Paul Knapp
Col. James Sorrel utilized commercial piston and cylinder assemblies to produce his custom-built 2-cylinder racing engines.
Showing 20 of 69 exhibits.