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- Oct 19, 2005
- Messages
- 18,978
I'd pinged Pazion about the rare trigger geometry non-electrical fault for this response to check next time Trixie wears out another AAU.
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Hi Steven,
Thanks for contacting us.
This is a rare problem. Over the years we have received some feedback on this.
If the overlap between the rotor magnets and trigger poles is out of limits, this could be due to either a camshaft variation or perhaps a machining error with the rotor.
On a small number of cases we have been advised that there are some mechanical differences in some aftermarket camshafts for the Commando.
This can result in an overlap/clearance issue.
The rotor magnets should be running somewhere between the two steel poles on the back of the trigger.
The amount of overlap is not too important.
If the rotor is running too close it may touch the back of the trigger (not good).
If the rotor is too far out (magnets not running within the poles), the ignition may not fire at all, or at least not at normal cranking speeds.
Typically the top edge of the aluminium rotor will be about 2-3mm (approx 0.080"-0.120") from the back of the green trigger board.
If measuring from the top of the green circuit board, allow about 1.6mm (0.063") for the thickness of the board.
Please let us know what you find.
Best regards,
Andy
Pazon Ignitions Ltd.
.....................................................
Hi Steven,
Thanks for contacting us.
This is a rare problem. Over the years we have received some feedback on this.
If the overlap between the rotor magnets and trigger poles is out of limits, this could be due to either a camshaft variation or perhaps a machining error with the rotor.
On a small number of cases we have been advised that there are some mechanical differences in some aftermarket camshafts for the Commando.
This can result in an overlap/clearance issue.
The rotor magnets should be running somewhere between the two steel poles on the back of the trigger.
The amount of overlap is not too important.
If the rotor is running too close it may touch the back of the trigger (not good).
If the rotor is too far out (magnets not running within the poles), the ignition may not fire at all, or at least not at normal cranking speeds.
Typically the top edge of the aluminium rotor will be about 2-3mm (approx 0.080"-0.120") from the back of the green trigger board.
If measuring from the top of the green circuit board, allow about 1.6mm (0.063") for the thickness of the board.
Please let us know what you find.
Best regards,
Andy
Pazon Ignitions Ltd.
