SOHC.co.uk Forums > CB500/550

Electronic ignition

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Sesman:
Ok, certainly makes sense to me. Thanks.

Bryanj:
Just a late chime in i can remember the Boyer ignition units when brand new idea, they were developed for the Nortons and Triumphs(especialy the triples) due the quality of St Joseph Lucases points. Never new of a failure back then, the alternative was lumenition which didnt work if the points cover was left off(sunlight on the sensors)

deltarider:

--- Quote from: K2-K6 on January 12, 2022, 01:30:35 PM ---
--- Quote from: Sesman on January 12, 2022, 01:17:15 PM ---On the topic of Hondaman ignition, do the original capacitors need to be in full working order?

--- End quote ---

I read, a while ago, his thread on development of the system which is really interesting.  It will run with no condenser facility as far as I recall.

In combination with many supplement type systems, the load experienced by conventional points type original arrangement by them switching the coil negative in and out is fully taken by a switching transistor in the new part of the electronics.  The points then just act as timing pulse (to effectively fire the starting pistol in the module) and so have very minimal load requirements which is why the condensor had to be there and prevent the full load causing a spark to jump the points gap.

--- End quote ---
Without a capacitor you'd have an even steeper rise time, which is good, but you'd also have an increased risk of an erratic 'multi-firing' so to speak, which is not so good. So if Hondaman left out the capacitor in his module, I'd advise you to keep the stock one wired. In my module capacitors (the blue parts in the pic) are incorporated, so you can disconnect the old ones.

Sesman:
“Your module”? Please do tell.

deltarider:
You've missed reply #9.

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