Re: Ignition system

Posted by Hendred on Feb 12, 2015; 9:52am
URL: http://silk-motorcycles.221.s1.nabble.com/Ignition-system-tp5001260p5001263.html

You should be able to determine the type of system from pictures from the supplier's websites. If it is a Pazon or Boyer it will have a circular printed circuit board behind the oil pump with probably a circular magnet on the crankshaft.  A typical Pazon system is shown here:

http://www.pazon.com/ignition-system/sure-fire-british-twin-12volt.html

A Lumenintion system will look like the PMA50 system here:

http://www.newtronic.co.uk/index.php/products/category/70-standard optronic

The Lumenition system has a rotating flat "shutter" on the crankshaft which cuts a light beam.  A light switch is mounted on a plate.  All the electronics are in an aluminium box fixed near the coils. The system originally fitted to Silks is obsolete with no spares available.  Although the current PMA50 looks similar to the original Silk system none of the parts are compatible.

The Lumention system uses a mechanical advance and retard system and the Pazon and Boyer systems use electronic advance and retard.  

I would not try soldering new wires onto a light switch directly.  I suspect it is only the insulation which is brittle and the copper wire is ok.  I would look closely at doing Gasman's earlier suggestion of stripping off the insulation leaving a long tail to solder new wires to and using heat shrink to insulate the exposed tail.  

I suppose the obvious question is does the system actually work as it is before spending too much time on it?


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