Speedometer gear for worm drive on internal hub drive in front wheel Plastic 3D printed PLA with correct tooth ratio in lime green Suits Nortons 1938 to 1946 with speedo drive on front wheel. Requires a cross for locator pin to suit your drive shaft. Use this gear for testing purposes only to check your speedo drive is aligned correctly and functioning as the front wheel turns. Do not use at speed on a moving vehicle. Original part number: 3880;A2/550 - pinion for internal front wheel drive
