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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
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<blockquote data-quote="Monkeypants" data-source="post: 1475" data-attributes="member: 2708"><p>I agree with Rapcom, turn indicators are essential. I'm adding some extra indictors to the top box as the rear ones I have on the plate holder are quite small.</p><p></p><p>The new Alton seems to be a nice unit, plenty of power at low revs, reasonable cost and it's appearance is almost identical the original dynamo. In addition, with an alternator you do away with the wear/failure problems associated with brushes and commutator in a dynamo.</p><p></p><p>The chimanos also work well, especially when converted to 12 volts with a JG, but do not put out as much power as the new Alton. </p><p></p><p>The new Alton will run points coil ignition (25watts) plus a 60 watt headlight (75 watts of light total inc tailight and speedo lights) plus run a heated vest and balance all of this at around 52 mph in top gear (standard gearing) The chinamo at 12 volts with JG unit will run the same load minus the heated vest (35 watts) and balance at about the same speed or slightly higher. It will not run lights and vest combined at any speed, it is one or the other. This is a problem for me on a cold night, so I tend to use the bike with the Alton if the vest and lights will both be needed.</p><p></p><p>Since neither of your bikes are point/coil ignition, you probably could run a powerful (60 watt halogen) headlight and a vest at the same time with just a chinamo on 12 v, provided you keep the speeds up.</p><p>I'm not sure how the Alternator speed/ road speed of a Comet compares to a twin and the number above are for a twin.</p><p></p><p>I would probably opt for the Alton as it is readily available new and has greater power which , although you may not need now, will be useful if you decide to tour Scotland in September or some other place with a typical Northern climate. </p><p></p><p>The other consideration is that new Chinamos are no longer available and repair parts for the Chinamo could be tough to find over time.</p></blockquote><p></p>
[QUOTE="Monkeypants, post: 1475, member: 2708"] I agree with Rapcom, turn indicators are essential. I'm adding some extra indictors to the top box as the rear ones I have on the plate holder are quite small. The new Alton seems to be a nice unit, plenty of power at low revs, reasonable cost and it's appearance is almost identical the original dynamo. In addition, with an alternator you do away with the wear/failure problems associated with brushes and commutator in a dynamo. The chimanos also work well, especially when converted to 12 volts with a JG, but do not put out as much power as the new Alton. The new Alton will run points coil ignition (25watts) plus a 60 watt headlight (75 watts of light total inc tailight and speedo lights) plus run a heated vest and balance all of this at around 52 mph in top gear (standard gearing) The chinamo at 12 volts with JG unit will run the same load minus the heated vest (35 watts) and balance at about the same speed or slightly higher. It will not run lights and vest combined at any speed, it is one or the other. This is a problem for me on a cold night, so I tend to use the bike with the Alton if the vest and lights will both be needed. Since neither of your bikes are point/coil ignition, you probably could run a powerful (60 watt halogen) headlight and a vest at the same time with just a chinamo on 12 v, provided you keep the speeds up. I'm not sure how the Alternator speed/ road speed of a Comet compares to a twin and the number above are for a twin. I would probably opt for the Alton as it is readily available new and has greater power which , although you may not need now, will be useful if you decide to tour Scotland in September or some other place with a typical Northern climate. The other consideration is that new Chinamos are no longer available and repair parts for the Chinamo could be tough to find over time. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
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