Any guy who's had to change the coil springs in his vehicle knows the potential hazards involved in doing this job. What can make the task even more hazardous is when there's no weight on the vehicle.

Take a steel rod, wrap it into a spiral shape, throw some engineered heat-treating in the mix, and you've got yourself a coil spring. That spring can be used as part of your suspension to support the ...

Coil-sprung suspension is a low-stiction, low-maintenance approach to suspending your mountain bike, with less heat build-up than air suspension. However, unlike air suspension (where you just ...