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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Programmable ignition
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<blockquote data-quote="Nigel Spaxman" data-source="post: 91772" data-attributes="member: 2907"><p>A lot of people around Vancouver are using Harley type ignitions, either a screaming eagle one that is no longer available or the Dynatec 2000i. I have the Dynatec, I was able to fit the sensor inside the housing that was used previously for my Rita Ignition. I made my own cup with slots in the right spot for the 50 degree cylinder angle but it is also possible just to re program the timing on one of the cylinders and use the standard cup. The Rita ignition I had before, worked great but it puts a lot of power to the coils and only large metal encased coils can take the heat. If you use the Dyna ignition the little Dyna coil can fit under the cowl. You can do anything you would possibly need to do with the Dyna ignition. I have the vacuum operated switch hooked up. With the VOS you can run a bit more advance. When my bike is running down the road at light load at 3000 RPM the ignition timing will be about 36 degrees. When the throttle is opened a bit the timing drops down to 34 degrees. My bike is not that fussy about the timing anyway since the compression is only 8.1 to 1 but I think that the fuel economy increased a bit from ignition that was more or less fixed at 34 degrees with the Rita (at cruising speeds) I was able to hook the ignition to an old laptop computer to program different curves. I couldn't get it to work with my newer computer. I have the VOS hooked only to the rear cylinder which causes the switch to turn on and off rapidly at idle, I programmed both curves (the VOS on and Off curves) to be the same at idling speeds to prevent idling problems caused by this pulsing. Also I made an ignition curve that stabilizes the idle. The biggest advantage if you are using this ignition is you can get parts really easily in North America at Harley dealers.</p></blockquote><p></p>
[QUOTE="Nigel Spaxman, post: 91772, member: 2907"] A lot of people around Vancouver are using Harley type ignitions, either a screaming eagle one that is no longer available or the Dynatec 2000i. I have the Dynatec, I was able to fit the sensor inside the housing that was used previously for my Rita Ignition. I made my own cup with slots in the right spot for the 50 degree cylinder angle but it is also possible just to re program the timing on one of the cylinders and use the standard cup. The Rita ignition I had before, worked great but it puts a lot of power to the coils and only large metal encased coils can take the heat. If you use the Dyna ignition the little Dyna coil can fit under the cowl. You can do anything you would possibly need to do with the Dyna ignition. I have the vacuum operated switch hooked up. With the VOS you can run a bit more advance. When my bike is running down the road at light load at 3000 RPM the ignition timing will be about 36 degrees. When the throttle is opened a bit the timing drops down to 34 degrees. My bike is not that fussy about the timing anyway since the compression is only 8.1 to 1 but I think that the fuel economy increased a bit from ignition that was more or less fixed at 34 degrees with the Rita (at cruising speeds) I was able to hook the ignition to an old laptop computer to program different curves. I couldn't get it to work with my newer computer. I have the VOS hooked only to the rear cylinder which causes the switch to turn on and off rapidly at idle, I programmed both curves (the VOS on and Off curves) to be the same at idling speeds to prevent idling problems caused by this pulsing. Also I made an ignition curve that stabilizes the idle. The biggest advantage if you are using this ignition is you can get parts really easily in North America at Harley dealers. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Programmable ignition
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