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Spare coils cb550?

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ginger_jim:
Its all a bit of a nightmare isnt it!  You can see why people the world over recommend running standard ignition components, but equally its easy to understand why people are tempted by promises of (relatively) maintenance free ignition systems. 

Sounds to me like you've done your homework and in theory everything should be fine, but I guess this is all part and parcel of running an old four.  Blood, sweat and tears!  Oh and of course lots of money!

AshimotoK0:
Will deffo have the writeup  done on standard coil refurb. Just building up a test circuit. My take on it is that the weak link is the PVC outer on the HT leads. The 'coils' themselves are extremely reliable. With age the PVC hardens really badly and the inner core fatigues. This happens even on low mileage bikes.

JustcallmeMrT:

--- Quote from: AshimotoK0 on June 17, 2016, 10:49:02 AM ---Will deffo have the writeup  done on standard coil refurb. Just building up a test circuit. My take on it is that the weak link is the PVC outer on the HT leads. The 'coils' themselves are extremely reliable. With age the PVC hardens really badly and the inner core fatigues. This happens even on low mileage bikes.

--- End quote ---
That's exactly what has happened with my leads - the PCV has cracked down to the core right at the point where the lead enters the coil. 

The coils themselves test perfectly good.  Primary resistance tests bang on 5.0 ohms, secondary resistance is between 15.3k-14.7k ohms, continuity between primary circuit, no continuity between primary to secondary.

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JustcallmeMrT:

--- Quote from: ginger_jim on June 17, 2016, 10:42:30 AM ---Its all a bit of a nightmare isnt it!  You can see why people the world over recommend running standard ignition components, but equally its easy to understand why people are tempted by promises of (relatively) maintenance free ignition systems. 

Sounds to me like you've done your homework and in theory everything should be fine, but I guess this is all part and parcel of running an old four.  Blood, sweat and tears!  Oh and of course lots of money!

--- End quote ---
Definitely money!!

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