Boyer ignition

Hi, can anyone please advise as to the correct Boyer electronic ignition kit for the '69 Commando, thanks, David

http://www.boyerbransden.com/
Micro MkIV: KIT00053 Norton Atlas/Commando 12v
Micro Digital: KIT00084 NORTON ATLAS / COMMANDO 12 VOLT
Micro Power: KIT00284 NORTON ATLAS / COMMANDO 12 VOLT

I'd take some convincing that Micro Power is correct for anything.

Many thanks for your advise guys, cheers, David

Triton Thrasher said:

I'd take some convincing that Micro Power is correct for anything.

Click to expand...

Curious to know your need for convincing?
From my testing, they are both microprocessor run. I depotted a micro digital and can verify that one 100%. :twisted:
The biggest difference I can tell is the length of dwell. The micro digital is a long dwell with a fancy advance curve with the antistall feature. The Micropower is virtually the same except it is a short dwell system necessitating the short dwell coils and also has the antistall featured curve.
The micropower is measured as the lowest "AVERAGE" current draw. Which would seem to be a benefit. The stepped dwell increments are the only question mark in my book since they are (IIRC) not strictly a smooth and steady % of conduction time. My memory is starting to get a bit stale since I did these SO long ago. :|

I have not run either on my bikes....only on the distributor machine.

Still on the Boyer Bransden theme, can anyone please advise as to the coils to be used with this set up, cheers, David

fireflake said:

can anyone please advise as to the coils to be used with this set up,

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For Micro MkIII, MkIV and Micro Digital, either two 6V coils connected in series or, one dual coil of at least 3.0 Ohms primary resistance(see Boyer instructions).
The Micro Power kit includes a digital mini dual coil which must be used with that system.