By pressing a button on the dashboard a chain wheel is lowered so it contacts the inside of the tyre. The contact between the tyre and the rubber-covered chain wheel causes the chain wheel to rotate, creating enough centrifugal force to extend the chains out in front of and under the tyre.
Onspot Automatic snow chains
By pressing a button on the dashboard a chain wheel is lowered so it contacts the inside of the tyre. The contact between the tyre and the rubber-covered chain wheel causes the chain wheel to rotate, creating enough centrifugal force to extend the chains out in front of and under the tyre.
Pros
- Permanently mounted – always ready to use
- Activated by switch – driver stays in cab
- Weight optimised
- Durable and reliable
- Custom fit – simplified installation and long product life
- Works forward, in reverse and together with ABS breaking
- Activated and operated without having to stop the vehicle – up to 35mph (50 km/h)
- Reduces breaking distance
- Only used when required – chains last longer
Cons
- Does not work when the chain wheel cannot spin freely (e.g. off-road)
- Reduced effectiveness in deep snow
- Max speed 50km/h (35mph)
Onspot can be fitted to:
Light Commercial Trucks
Heavy Commercial Trucks
Ambulance
Fire and Rescue
School Buses & Coaches
Yard Tractor
Snow and Ice Removal
Utility Trucks
Compare with other systems
| Type of vehicle | Onspot | Conventional snow chains | Sand spreaders | Textile tyre socks | 4x4 |
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| Light Commercial Trucks |  |
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| Heavy Commercial Trucks | |
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| Ambulances | |
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| Fire and Rescue | |
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| School Buses and Coaches | |
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| Yard Tractors | |
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| Snow and Ice Removal | |
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| Utility Trucks | |
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Maintenance
The only maintenance required is to engage the system occasionally. This will keep the self-lubricating bearings in good working condition.