[scarceller]

I just crunched the numbers from the dwell map.

At 2000RPMs for these given voltages you have these dwell times:

voltage : ms time
5.5v : 9.4ms
7.3v : 9.4ms
9.2v : 8.3ms
11.0v : 6.2ms
12.8v : 4.8ms
14.7v : 4.0ms
15.1v : 2.3ms (this is for any voltage above 15.1v)

Note that at 2000RPMs crank turns 1 rotation in 30ms so we have just 10ms between spark events, this is why the dwell can't be more than 10ms. You see in the above data that they don't ever dwell past 9.4ms or 94% of the available time. They seem to leave 6% of available time for the actual spark event.

Those calcs are very much in line with my bech test results.

Hope that makes sense.