Argh.... What is the rationale behind a fall-sensor? Does it cut off the starter only, or also fuel pump? Is not cutting off fuel at high lean angles dangerous? I spent all day wondering why my 2004 Aprilia RSV1000R did not start. I had heard a noise from the fall-sensor, which I thought was the motion sensor of the alarm. Looked inside, saw a ring, and concluded that the noise of the loose ring is normal. After refitting, the starter motor would not work. It turned out that I had refitted it upside down. Can't see what use that sensor is. Bram