To get the most out of helmet lights, they should be leveled by direct their beams towards drivers. This Instructable will show you how to build a self-leveling mount which is compatible with Portland Design Works, Cygolite, and Planet Bike tail lights. You can also install this mount to panniers and backpacks or attach a camera to it. The bike light I used is the PDW Danger Zone Rear Light.
Step 1: Materials
- 2 - plastic strips
- 1 - 2" #6-32 bolt
- 4 - #6 flat washers
- 12 - #6-32 nuts
- Cable ties
- Angle bracket
- Tail light
Step 2: Drill Plastic Strips
Drill the strips for the cable ties and the bolt.
Step 3: Attach Angle Bracket to the Clip of the Light
Make sure there is enough space for removing the batteries or accessing the button.
Step 4: Attach the Angle Bracket to a Plastic Strip
Step 5: Attach Both Cable Ties With a Bolt
You will need to use the nuts and washers in this step. To lock the nuts in place, tighten them in opposite directions with two pliers. This will form a hinge. Test to make sure that gravity will level the light.
Update: Four nuts were added in the center to stabilize it.
Step 6: Attach the Mount to the Helmet
Make sure that the light has a full range of motion. If not, you can trim the mount.