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Tech. Advice: Series 'A' 500cc/1000cc Bikes
B.T.H Mag-Dyno
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<blockquote data-quote="Chris Launders" data-source="post: 139563" data-attributes="member: 2010"><p>Have you considered coil ignition, it is possible to retain the magdyno and use it as a trigger for coil ignition thus keeping the manual adv/ret.</p><p></p><p>I did this for a Brough until I got the pennies together to get a mag rebuilt, it's quite simple and doesn't involve any permanent mods to the mag part other than ruining a pickup.</p><p></p><p>You remove the slip-ring, all the windings and the condenser from the armature, fit a single cylinder slip ring and solder a wire from this where the HT input was to the connection where the condenser connected to the points, wrap the wire once round the central core and tape in place. Make sure you kill any flux after soldering.</p><p></p><p>I modified a pick-up by epoxying an electric drill brush holder in place of the original brush holder part (no longer HT of course) soldering a wire to the back first, this coming out where the HT lead fitted.</p><p></p><p>Then just wire up a twin output coil of your choice to a supply then that and a condenser to the above wire.</p><p></p><p>I built my mag up from spare parts but it still applies.</p><p></p><p>Chris.</p></blockquote><p></p>
[QUOTE="Chris Launders, post: 139563, member: 2010"] Have you considered coil ignition, it is possible to retain the magdyno and use it as a trigger for coil ignition thus keeping the manual adv/ret. I did this for a Brough until I got the pennies together to get a mag rebuilt, it's quite simple and doesn't involve any permanent mods to the mag part other than ruining a pickup. You remove the slip-ring, all the windings and the condenser from the armature, fit a single cylinder slip ring and solder a wire from this where the HT input was to the connection where the condenser connected to the points, wrap the wire once round the central core and tape in place. Make sure you kill any flux after soldering. I modified a pick-up by epoxying an electric drill brush holder in place of the original brush holder part (no longer HT of course) soldering a wire to the back first, this coming out where the HT lead fitted. Then just wire up a twin output coil of your choice to a supply then that and a condenser to the above wire. I built my mag up from spare parts but it still applies. Chris. [/QUOTE]
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Tech. Advice: Series 'A' 500cc/1000cc Bikes
B.T.H Mag-Dyno
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