Wildwood church in the morning, and Robin and Helen invited us to lunch – a very good time.
Back at Erin Mae I soldered the new, crimped extension piece, covered it with self-amalgamating tape, fitted a new ring connector and attached it to the alternator. This time I got a reading on the tachometer, but it was showing 1000 rpm at tickover, which I didn't think could be right.
The calculation depends on the pulley diameters and the number of poles in the alternator. I put up a post on CanalWorld forums asking about the poles, and got a suggestion about an app that would turn a phone into a strobe tacho. Then it occurred to me to email Prestolite and ask them. In the meantime found an iPhone app that would run on the iPhone 4, but by now it was too late to test it.
