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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
a better way to wire the headlights
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<blockquote data-quote="timetraveller" data-source="post: 42769" data-attributes="member: 456"><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">The heating effect of a current passing through a resistance is the current (amps) squared times the resistance (ohms). Suppose that one had a six volt, forty eight watt head light bulb then that would take eight amps. Going up to a twelve volt system and a sixty watt bulb would drop the current down to five amps. Eight squared is sixty four and five squared is twenty five so with regards to heating in wires and switches etc. there is less than half the effect with the twelve volt system when compared with the earlier six volt system. For those using a ‘Walkernator’ on a twin I recommend using a 130/90 head light bulb. That takes just under eleven amps, which when squared gives one hundred and twenty one, that is roughly double the heating that would have occurred with the old forty eight watt system. When Dick Sherwin and I developed the system the heating in wires and switches was one thing that I checked very carefully but so far I have never been able to detect any heating in any wires or switches in the system. Of course, if you have poor connections or worn through wiring you will get problems. The old style dip switches in particular are one place that I would be careful with.</span></span></span></p></blockquote><p></p>
[QUOTE="timetraveller, post: 42769, member: 456"] [SIZE=3][COLOR=#000000][FONT=Calibri]The heating effect of a current passing through a resistance is the current (amps) squared times the resistance (ohms). Suppose that one had a six volt, forty eight watt head light bulb then that would take eight amps. Going up to a twelve volt system and a sixty watt bulb would drop the current down to five amps. Eight squared is sixty four and five squared is twenty five so with regards to heating in wires and switches etc. there is less than half the effect with the twelve volt system when compared with the earlier six volt system. For those using a ‘Walkernator’ on a twin I recommend using a 130/90 head light bulb. That takes just under eleven amps, which when squared gives one hundred and twenty one, that is roughly double the heating that would have occurred with the old forty eight watt system. When Dick Sherwin and I developed the system the heating in wires and switches was one thing that I checked very carefully but so far I have never been able to detect any heating in any wires or switches in the system. Of course, if you have poor connections or worn through wiring you will get problems. The old style dip switches in particular are one place that I would be careful with.[/FONT][/COLOR][/SIZE] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
a better way to wire the headlights
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