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How To Wrap Your Harness Around a Roll Cage
The shoulder straps on some of our harnesses are designed to wrap around a harness or roll bar. This brief guide outlines how to securley wrap your harness shoulder straps around a harness or roll bar. Please note that for the best fit and safety, always follow the installation instructions provided with the harness and your car’s roll bar or harness bar manufacturer. Harnesses with shoulder straps that have been wrapped around a harness or roll bar correctly are road legal in the UK. If you live outside of the UK, please check the legal position locally before fitting harnesses in this way.
Key Points
- Keep the length of the strap as short as possible
- There is an optimum angle of minus 10 degrees. This should never be an upward angle
- Keep the 3 bar slide snug up against the tube
- Always remember to loop back on yourself when threading up
- Leave at least a 10cm tail
- Cross over the shoulder straps if the tube is more than 50cm
- behind the seat
- Use book end stoppers to prevent lateral movement
- Wrap around helps save weight
When wrapping harnesses around a roll cage or harness bar there are several safety considerations to be aware of:
- Always make sure that the webbing passes smoothly through the seat opening and is not chaffing on any seat mounts or sharp edges. Sharp edges can cause the webbing to abrade or cut.
- Always make sure that the 3 bar slide is as close to the harness bar as possible. This is important because a lose 3 bar slide can cause slippage.
- When wrapping around the roll cage always make sure that you remember the final locking loop.
- Once you have done the final locking loop make sure that you have at least 10-15cm of webbing as a tail. Excess webbing can be neatly rolled up and cable tied out of the way.
The shorter the strap the better. This is because polyester webbing has a typical elongation of 3-5%, and the shorter the strap the less elongation during crash conditions. If the roll cage is more than 50cm behind the seat, we recommend that you cross the shoulder straps over. This increases stability during a
crash.
The optimum angle for wrapping around the roll cage is minus 10 degrees. Any angle between 0 degrees to minus 30 degrees is acceptable, but never an upward angle. To prevent lateral movements of the shoulder straps whilst going around a corner, bookend the location of the straps with stoppers. This will stop the belts sliding along the tube when you go around a corner.