Wall Junior; Elmer's First Junior Two Stroke Tether Boat Engine, built by Elmer Wall, mid Early 1920s
The complex carburetor was fabricated by soldering castings, machined parts, and brass tubing together. The solder joints were filled and blended to make it resemble a casting; and then it was thoroughly tested for performance. Once satisified Elmer plugged the holes and used it as the pattern to cast aluminum carburetors for his engine kits.
The engine measures 6 inches long, 5 inches wide, 8 inches tall (to top of plug) and weighs 4 pounds 6 ounces. Ir has a bore and stroke of 1.25 inches for a total displacement of 1.53 cuin (25cc). .
Courtesy of Paul and Paula Knapp
Miniature Engineering Museum
Wall Junior; Elmer's First Junior Two Stroke Tether Boat Engine, built by Elmer Wall, mid Early 1920s
The complex carburetor was fabricated by soldering castings, machined parts, and brass tubing together. The solder joints were filled and blended to make it resemble a casting; and then it was thoroughly tested for performance. Once satisified Elmer plugged the holes and used it as the pattern to cast aluminum carburetors for his engine kits.
The engine measures 6 inches long, 5 inches wide, 8 inches tall (to top of plug) and weighs 4 pounds 6 ounces. Ir has a bore and stroke of 1.25 inches for a total displacement of 1.53 cuin (25cc). .
Courtesy of Paul and Paula Knapp
Miniature Engineering Museum