Simplicity Wonder Boy
Power
3 hp
Production
1957
Engine
Gasoline, 1-cylinder
Transmission
Belt-driven gear
Drive
2WD
From the same series:
Introduction
Simplicity Wonder Boy II (1957-1958) Riding Lawn Mower
The Simplicity Wonder Boy II is a classic riding lawn mower produced in the late 1950s. Manufactured in Port Washington, Wisconsin, this machine represents the early era of residential lawn maintenance equipment, designed for simplicity and ease of use in private garden settings.
Engine and Performance
The tractor is powered by a single-cylinder, air-cooled Clinton 1200 gasoline engine. It features a displacement of 167 cc (10.2 ci) and produces 3.6 hp (2.7 kW). The engine is started via a manual recoil system, with an optional electric starter available. The bore and stroke measure 2.47 by 2.125 inches (63 x 54 mm).
Transmission and Drive
The drivetrain utilizes a belt-driven gear transmission system providing one forward gear and one reverse gear. Engagement is managed by a mechanical idler pulley clutch. The machine operates with a two-wheel drive system, providing basic traction suitable for residential lawn conditions.
Chassis and Mowing Equipment
The Wonder Boy II is built with an open operator station and manual steering for direct control. It is equipped with a 24-inch mower deck. The mobility is supported by turf-specific tires, with 10x2.50 dimensions on the front and 4.00x8 dimensions on the rear, designed to minimize soil compaction and grass damage.
Conclusion
The Simplicity Wonder Boy II is a vintage utility machine tailored for small-to-medium residential lawn care. Its straightforward mechanical design and compact dimensions reflect the engineering standards of the late 1950s, making it a notable model for collectors of historical lawn equipment.
Production Information of Simplicity, Wonder Boy
- Original price was $340 in 1957
- Riding lawn mower
- Built in Port Washington, Wisconsin, USA
| Manufacturer | Simplicity |
|---|
Dimension and Tires Information of Simplicity, Wonder Boy
| Lawn/turf front | 10x2.50 |
|---|---|
| Lawn/turf rear | 4.00x8 |
Engine Specifications of Simplicity, Wonder Boy
- Clinton 1200
- Air-cooled
- Gasoline
- 1-cylinder
| Power | 3.6 hp [2.7 kW] |
|---|---|
| Displacement | 167 cc [10.2 ci] |
| Starter type | Manual recoil |
| Bore/Stroke | 2.47x2.125 inches [63 x 54 mm] |
| Bore/Stroke(optional) | Electric |
Transmission Information of Simplicity, Wonder Boy
Transmission variants 1
| Type | Belt-driven gear |
|---|---|
| Gears | 1 forward and reverse |
| Clutch | Mechanical idler pulley |
Mechanical Specs of Simplicity, Wonder Boy
- Two-wheel drive
- Manual steering
- Open operator station.
Where it sits
With 3 HP, the Simplicity Wonder Boy sits just below Wonder Boy II (4 HP) in Simplicity's range. Its power puts it in the 20th percentile of 1950s models in our database (65 machines).
Frequently asked questions
How much horsepower does the Simplicity Wonder Boy have?
The Simplicity Wonder Boy delivers 3 HP.
What years was the Simplicity Wonder Boy produced?
The Simplicity Wonder Boy was produced in 1957.
What engine does the Simplicity Wonder Boy have?
The Simplicity Wonder Boy is powered by a Gasoline, 1-cylinder engine.
What transmission does the Simplicity Wonder Boy use?
The Simplicity Wonder Boy uses a Belt-driven gear transmission.
Is the Simplicity Wonder Boy 4WD?
The Simplicity Wonder Boy is available in 2WD.