I just did a 2N with a 1 wire alternator. it has a small diameter pulley and it starts charging right away at idle.
My 9N had a 3 wire alternator which I had to replace but it needs to be excited before it will charge and it has a larger diameter pulley like it was on a car. I never put a tach on them so I don't know the RPM at the alternator.
Re: 1946 2n 12 volt alternator not charging in reply to HCooke, 06-29-2013 06:25:46
Quoting Removed, click Modern View to seethere are easily a dozen different 1-wire VRs & it is a fact that some will start charging at a lower speed than others. At least one does NOT depend on the alternator itself to supply field current via diode trio. As a matter of fact, part of the installation of that particular VR involves the removal of the diode trio (not needed). It detects rotation & switches field current on, from the battery, via the charge stud on alt rear....still 1-wire.
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