Choosing the right snowblower: single-stage versus two-stage machines for your driveway
In short: Landscape contractor Roger Cook explains the mechanical differences between single and two-stage snowblowers. Understanding how these machines handle different surfaces, like asphalt versus gravel, is essential for safe and effective snow removal during the winter months.
Single-stage snowblowers utilize a rubber auger that simultaneously scoops and discharges snow. These machines are well-suited for asphalt surfaces but pose a safety risk on loose gravel, as the auger can throw stones. In contrast, two-stage machines employ metal auger blades to scoop snow, while a separate impeller handles the discharge. These units feature adjustable skids, allowing them to operate safely on gravel surfaces without picking up debris.
Two-stage models also include shear pins designed to protect the transmission if the auger becomes clogged by an object. Regardless of the machine type, users should never clear clogs by placing their hands inside the discharge chute, as this can result in serious injury. Both machine types typically offer manual or electric start options, and two-stage models often include a joystick to control the direction of the snow discharge.
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Sources
- Summary by Intellect · source: How to Choose and Use a Snowblower | This Old House
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