This is my steering wheel knob (or brodie knob) project for car (or boat)
I needed this to increase my capacity to maneuver my city car during the parking, as I had a small accident on my left hand. It worked very well, despite its simplicity.
I decided, in fact, to avoid bearings (not really necessary due to the limited number of turns it makes)
Here the list of the metallic parts: (all sizes in millimeters)
1 bolts M8 (80 x 8) (hexagonal head)
3 nuts M8 (6 mm thickness)
4 washers M8 (ext. diam. 15 mm.)
2 bolts M3 (20 x 3) (round head)
2 nuts M3
I added several versions, choose the model which correspond better to the section diameter of your steering wheel.
Edit 27/04/16: Added a new larger knob, if you need one (better grip, in case you have an heavy steering, like on a tractor). If you choose to realize this one you should also replace the main bolt, always a M8 but 100 mm length. The jaws remain the same.
| Jaws_-_22_mm.skp | 260.4KB | |
| Jaws_-_22_mm.stl | 164.4KB | |
| Jaws_-_26_mm.skp | 230.1KB | |
| Jaws_-_26_mm.stl | 164.0KB | |
| Jaws_-_28_mm.skp | 230.1KB | |
| Jaws_-_28_mm.stl | 164.0KB | |
| Jaws_-_30_mm.skp | 237.3KB | |
| Jaws_-_30_mm.stl | 164.0KB | |
| Jaws_-_32_mm.skp | 241.7KB | |
| Jaws_-_32_mm.stl | 166.4KB | |
| Knob.skp | 457.0KB | |
| Knob.stl | 293.1KB | |
| Knob_Large.skp | 532.3KB | |
| Knob_Large.stl | 328.0KB | |
| Steering_wheel_knob_assembled_32_mm.skp | 636.7KB | |
| Steering_wheel_knob_assembled_32_mm.stl | 445.3KB |
