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Author Topic: 750K - unknown electronic ignition  (Read 737 times)

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Offline Erny

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750K - unknown electronic ignition
« on: September 01, 2018, 04:21:03 AM »
Does anybody have some information about this ignition? Found it installed on rusty CB750K2...
Description, schematics, advantages, disadvantages... Whatever. Point seems to be kept on engine

To me, principally it looks like Hondaman's ignition
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CB750K K7 USA model (1977)
CB550K1 USA model (1975)

Offline ekpent

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Re: 750K - unknown electronic ignition
« Reply #1 on: September 01, 2018, 04:31:54 AM »
 Never seen one of those. Does the bike still have points under the ignition cover on the engine or another set up.
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Offline Erny

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Re: 750K - unknown electronic ignition
« Reply #2 on: September 01, 2018, 04:35:14 AM »
Had no chance to open cover, but from outside it looks yes - cable that goes from under point cover looks exactly the same as on my stock K7 with points
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CB750K K7 USA model (1977)
CB550K1 USA model (1975)

Offline dave500

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Re: 750K - unknown electronic ignition
« Reply #3 on: September 01, 2018, 05:01:44 AM »
it says ultra so its gotta be good?
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Offline Deltarider

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Re: 750K - unknown electronic ignition
« Reply #4 on: September 01, 2018, 02:09:33 PM »
My guess it is one of the first generation transistor ignitions (TO-C type) that used the breakerpoints for the control current and that at the time were all quite bulky. If you can unscrew the cover and take a pic, it would be interesting to see what's inside.
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CB500K2-ED Excel black
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Offline Erny

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Re: 750K - unknown electronic ignition
« Reply #5 on: September 01, 2018, 02:24:55 PM »
Cannot it is not mine
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CB750K K7 USA model (1977)
CB550K1 USA model (1975)
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