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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Twin Points Ignition
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<blockquote data-quote="Marcus Bowden" data-source="post: 134368" data-attributes="member: 3287"><p>I have two Raps with a Grosset ignition system, it is just an electronic trigger unit that doesn't need condensers and will fire two twin double coils for twin plugging arrangement or just one but you require less advance if twin plugged so I incorporated a manual advance/retard lever. The auto advance is mechanical similar to Lucas distributor or have the the auto advance reduced by Francios, the beauty with the system it uses very little current and I've run for two days on a charged battery only all indicators LED of cause. No messing with points as it's not so easy nowadays up & down on ones knees. One other thing I fitted were two little switches so I can switch on or off each coil in turn as you run 10 degrees retarded about if a coil fails the bikes still goes as normal but now too retarded, I drop a valve seat on the front exhaust and holed a piston in the rear by 20 mm simultaneously ! 2010 at 60 MPH. on the rebuild i put the coils one to each cylinder doesn't work too well, ask the boffins they explained it was because the way the coils are wound.</p><p>Like air craft twin ignition systems so test periodically when traveling. Your in your own cockpit.</p><p>bananaman.</p></blockquote><p></p>
[QUOTE="Marcus Bowden, post: 134368, member: 3287"] I have two Raps with a Grosset ignition system, it is just an electronic trigger unit that doesn't need condensers and will fire two twin double coils for twin plugging arrangement or just one but you require less advance if twin plugged so I incorporated a manual advance/retard lever. The auto advance is mechanical similar to Lucas distributor or have the the auto advance reduced by Francios, the beauty with the system it uses very little current and I've run for two days on a charged battery only all indicators LED of cause. No messing with points as it's not so easy nowadays up & down on ones knees. One other thing I fitted were two little switches so I can switch on or off each coil in turn as you run 10 degrees retarded about if a coil fails the bikes still goes as normal but now too retarded, I drop a valve seat on the front exhaust and holed a piston in the rear by 20 mm simultaneously ! 2010 at 60 MPH. on the rebuild i put the coils one to each cylinder doesn't work too well, ask the boffins they explained it was because the way the coils are wound. Like air craft twin ignition systems so test periodically when traveling. Your in your own cockpit. bananaman. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Twin Points Ignition
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