Automatic Tire Chains
The Onspot Automatic Tire Chain System offers the traction of a single set of conventional snow chains at the flip of a dashboard switch, without having to stop the vehicle.
The Onspot Automatic Tire Chain System offers the traction of a single set of conventional snow chains at the flip of a dashboard switch, without having to stop the vehicle.
An electric switch mounted in the cab provides 12 volts to an air solenoid mounted the solenoid is supplied from either the vehicle’s onboard air system or a 12-volt compressor kit.
When the dashboard switch is activated, the solenoid opens. This allows compressed air to enter the air cylinder and lower the chain wheel so it contacts the inside of the tire. The friction between the tire and the rubber-covered chain wheel causes the chain wheel to rotate, creating enough centrifugal force to flail the chains out. Six lengths of chain spaced at 60-degree intervals on the chain wheel ensure that there are always two chains between the tire and road surface whether you are accelerating, braking, or are in a wheel lockup condition.
The Onspot tire chain system fits a wide range of vehicles from pickup trucks to tractor trailers. It is DOT approved in all 50 states.
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