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Air Activated Snow Chains

Description

The Onspot Automatic Tire chain offers the traction of a single set of conventional snow chains at the flip of a switch, without having to stop the vehicle.

An electric switch mounted in the cab provides 12 volts to an air solenoid mounted on the vehicle's frame rail. Compressed air to the solenoid is supplied from either the vehicle's onboard air system or a 12-volt compressed air kit.

When the dashboard switch is activated, the solenoid opens allowing compressed air to enter the air chamber and lower the chainwheel so it contacts the inside of the tire. The friction between the tire and the rubber-covered chainwheel causes the chainwheel to rotate, creating enough centrifugal force to flail the chains out in front of the tire. (The principle of the system is similar to a small generator driven by a bicycle tire to operate a headlight.)

Six lengths of chain spaced at 60-degree intervals on the
chain

 

  • PERMANENT INSTALLATION, VEHICLE IS ALWAYS PREPARED
  • SHIFT ON THE FLY UP TO 25 MPH OPERATING SPEED 2 MPH TO 35 MPH
  • MORE HAULING FORCE
  • FASTER ACCELERATION
  • REDUCES STOPPING DISTANCE
  • TRACTION IN FORWARD OR REVERSE
  • INCREASES VEHICLE SAFETY AND PRODUCTIVITY
  • ELIMINATES WHEEL WELL DAMAGE FROM BROKEN CONVENTIONAL CHAINS
  • DESIGNED FOR ICE, PACKED SNOW AND UP TO 6 INCHES OF SNOW
  • FEW PARTS WITH LITTLE MAINTENANCE
  • REPLACEABLE CHAINPLATES
  • DOT APPROVED IN ALL 50 STATES
  • APPROVED FOR STATES WITH CHAIN CONTROL AREAS

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