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| electronic ignition question http://ducatipaso.org/forum/viewtopic.php?f=2&t=2038 |
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| Author: | fester [ Fri Oct 12, 2007 10:08 am ] |
| Post subject: | electronic ignition question |
| Author: | Tamburinifan [ Mon Oct 15, 2007 12:02 pm ] |
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| Author: | dave906 [ Mon Oct 29, 2007 1:14 pm ] |
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| Author: | Tamburinifan [ Thu Nov 01, 2007 1:50 am ] |
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| Author: | dave906 [ Mon Nov 12, 2007 12:26 pm ] |
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No I don't believe so Gert. The second ridge is as close to the TDC ridge as it can reasonably be within the geometry of the flywheel and pickup. I believe the ignition uses this double pulse as a reference for TDC-H, from where it can compute the rpm, advance and TDC-V updating each rev. I have looked at the ignition reluctor pulse train on an oscilloscope and the relationship of the pulses does not change with rpm in degrees. There is a double pickup ignition which was used on silimar age 900SS', and I believe this can be transplanted to the 906 by replacing the flywheel and the reluctor pickup mounting plate. This places two pickups in the flywheel housing spaced by 90 degrees - one for TDC-Vert, one for -TDC-Horiz. However there are also two ignition boxes, one for each cyl and they function independently. Again they fire a spark on both the compression and exhaust strokes as they can not know which is which. Dave |
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| Author: | Tamburinifan [ Tue Nov 13, 2007 11:48 pm ] |
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