SOHC.co.uk Forums > CB500/550

Ignition coil performance test

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deltarider:
Thanks, Bryan. Was it a set frequency or could you vary?

AshimotoK0:
The three point tester gives you a more stable  & reliable spark .. The third electrode does not have any electrical connection ... it just screws in and out. What you are doing is perfectly OK though ...you can buy 2-point testers similar to what  you have made. Non of those take into account what happens under cylinder pressure anyway.

https://www.youtube.com/watch?v=zGaDzTigrgs

https://www.amazon.co.uk/Tester-Current-Briggs-Workshop-Equipment/dp/B077Q4KT3N

Bryanj:
From memory it was just a push button so probably set frequency but quite quick.
The tester box was part of the "required" tools for a UK dealer and did dwell, continuity, capacitance,voltage and the spark test. I think it ran from a 12v  car battery we had to recharge but like i said this was early to mid 70's and a lot of water(and Guiness) has gone under the bridge since then

deltarider:
Thank you, all. Intriguing, that third electrode.

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