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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Magneto
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<blockquote data-quote="oexing" data-source="post: 172738" data-attributes="member: 1493"><p>Erik, I support your verdict about fancy caps in magnetos. Like you I cannot see how these cool caps can handle high AC voltage from magneto applications, the size is just too small. Allright, with very poor - ahmm Lucas magnetos - they may have no short time problem but we want fat sparks from decent coils , so then there will be substantial AC spikes in a coil-capacitor circuit. </p><p> MM has not tested WIMA caps but that does not mean they would not be up to the job. The MKP10 series is just the best type I believe and WIMA do them for 50 years , so they know their business - and their products are locally produced all that time and no imports from Asia. So I put my faith into these for reliable specifications. </p><p> There seem to be lots of reports about poor performances from modern typical capacitors made for classics, bike or car, so I will replace most of them for the MKP10 types, as I can see specifications printed on them - unlike classics which just say Bosch 0.22myF at best. </p><p></p><p> Vic</p><p> P.S. I do tests in the oven at 70 degrees C and 5 hours for checking performance at higher temperatures. No great idea just to spin the mag by hand for sparks while in cold state. </p><p></p><p>[ATTACH=full]59520[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 172738, member: 1493"] Erik, I support your verdict about fancy caps in magnetos. Like you I cannot see how these cool caps can handle high AC voltage from magneto applications, the size is just too small. Allright, with very poor - ahmm Lucas magnetos - they may have no short time problem but we want fat sparks from decent coils , so then there will be substantial AC spikes in a coil-capacitor circuit. MM has not tested WIMA caps but that does not mean they would not be up to the job. The MKP10 series is just the best type I believe and WIMA do them for 50 years , so they know their business - and their products are locally produced all that time and no imports from Asia. So I put my faith into these for reliable specifications. There seem to be lots of reports about poor performances from modern typical capacitors made for classics, bike or car, so I will replace most of them for the MKP10 types, as I can see specifications printed on them - unlike classics which just say Bosch 0.22myF at best. Vic P.S. I do tests in the oven at 70 degrees C and 5 hours for checking performance at higher temperatures. No great idea just to spin the mag by hand for sparks while in cold state. [ATTACH type="full"]59520[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Magneto
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