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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Battery Charging Help!
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<blockquote data-quote="pmcmanners" data-source="post: 173016" data-attributes="member: 5639"><p>Hello all,</p><p></p><p>I am a new member and posting on behalf of my neighbour who has just purchased his dream bike after many decades (Vincent 1953 Black Shadow).</p><p></p><p>We have noticed the amp meter on the headlight unit does not show positive amps when the bike is running/reving, it does however show negative amp draw when switching the headlight on. We decided to stick a multimeter on the battery to see if the alternator was charging the 6v battery........but nothing! </p><p></p><p>There are two wires going to the positive side of the battery. We assume one must be the supply to the electrical system and the other the in feed from the alternator. We think the alternator is the cylinder shaped module next to the battery with a plastic box (regulator?) attached to it.</p><p></p><p><strong>Does anyone have any idea why it is not charging?</strong></p><p><strong>What to check and any readings we should be getting?</strong></p><p></p><p>We did open the small plastic box on the alternator, but inside there was something we did not recognise - a cylindrical object with 2 wires on bolt posts and a wire soldered to the other end from the middle to the outside body -- what us this? </p><p></p><p>Sorry if these seem like noob questions, but we appreciate any help.</p><p></p><p>Can always take photos if that would help, but I'm sure you guys know these bikes back to front!!!!</p></blockquote><p></p>
[QUOTE="pmcmanners, post: 173016, member: 5639"] Hello all, I am a new member and posting on behalf of my neighbour who has just purchased his dream bike after many decades (Vincent 1953 Black Shadow). We have noticed the amp meter on the headlight unit does not show positive amps when the bike is running/reving, it does however show negative amp draw when switching the headlight on. We decided to stick a multimeter on the battery to see if the alternator was charging the 6v battery........but nothing! There are two wires going to the positive side of the battery. We assume one must be the supply to the electrical system and the other the in feed from the alternator. We think the alternator is the cylinder shaped module next to the battery with a plastic box (regulator?) attached to it. [B]Does anyone have any idea why it is not charging? What to check and any readings we should be getting?[/B] We did open the small plastic box on the alternator, but inside there was something we did not recognise - a cylindrical object with 2 wires on bolt posts and a wire soldered to the other end from the middle to the outside body -- what us this? Sorry if these seem like noob questions, but we appreciate any help. Can always take photos if that would help, but I'm sure you guys know these bikes back to front!!!! [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Battery Charging Help!
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