Registered Forum User
Ducati Meccanica
Posts: 2,467
Join Date: Dec 2001
Location: North Yorkshire
Mood: Is 112 dB loud enough?? What??
One revolution of the rear wheel equals the number of teeth on the rear sprocket, which is also that many links of chain travel. What your measuring is chain links, even when the sensor is positioned on the front sprocket. I know it seems counterintuitive but that's how it works.