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Old 18-06-2015, 00:47   #1
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Join Date: Jun 2008
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AutoPilot Questions

A couple of questions:

1. I checked the output that feeds from the course computer to the autopilot motor and it shows +/- 7 volts. Is that normal? I'd have though it should go +/- 12v? It is a ST50 Autohelm system from 1996 but upgraded in 2003.

2. I removed the old faulty chain drive unit (which is receiving the +/- 7v) and it is really small like this below. It is actually a windscreen wiper motor and found it for sale in Germany here. It only outputs 2nm and rated at 12v.

Note. I can't say what it was like before as it stopped working only a few hours after I bought the boat.
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