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Old 01-19-2009 | 04:38 PM
  #247  
Bigboat
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From: Alkmaar, NETHERLANDS
Default RE: Opensource CDI ignition

20ms = 50 Hz = 3000 RPM
2,9ms = ~350Hz = 21,000 RPM

The Voltage is also OK, it have to be between 400 and 600 Volt for a good spark.