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Author Topic: Chinese hit & miss alternative ignition needed  (Read 1210 times)

70Rcode

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Re: Chinese hit & miss alternative ignition needed
« Reply #15 on: January 15, 2020, 05:25:02 am »
Hi Fullrace,..my external connected surge protection circuit consist of a standard non-polarized .047 uf > 100 vdc capacitor, a 5.6 Volt Zener diode & a fast Recovery Rectifier  diode 600 vdc 1 amp 
  all of which are wired across the 2 wire Hall sensor wires. The 2 diodes "Cathode" leads should be marked with a black stripe & Must be connected to the + polarity hall sensor wire lead. In the ET1-ETX all silver H&M engines, both sensor wires are black colored & i had to power up the ignition module & verify with a dv voltmeter to determine the voltage polarity. I also wited an identical circuit across the + & - battery holder leads. All Black striped end diode Must be connected to the voltmeter verified +  sensor & battery holder wires. The p/n 1N4937 600 volt diode & p/n  1N4734  5.6 volt 1 watt Zener Diode componets are available at Parts Express. I wired my protective circuit  up before any ignition spark was activated & powered up with trigger magnet on far side away from the sensor. So far, 30+ engine runs have been factory supplied (black, all potted sealed ignition system trouble free.
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70Rcode

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Re: Chinese hit & miss alternative ignition needed
« Reply #16 on: January 15, 2020, 05:35:58 am »
In some all Black color Diode package versions, the "Cathode" wire is identified with a White stripe componet end.
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Fullraceflathead

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Re: Chinese hit & miss alternative ignition needed
« Reply #17 on: January 15, 2020, 01:31:53 pm »
Excellent, Thank you!!!
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70Rcode

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Re: Chinese hit & miss alternative ignition needed
« Reply #18 on: January 16, 2020, 05:56:14 pm »
This protection circuit won't fix or repair an already blown or damaged hall sensor or module & is intended to protect & extend the life of a good  working sensor-ignition module. As prev mentioned, i added the parts to a new, never been sparked ET1 engine with the upgraded black potted module With dedicated ground wire lead. I carefully power up the unit just long enough to verify the Hall sensor wiring polarity Without sparking the unit. So far all is good but you never know with unknown "black" boxes & >10 kv sparks !!
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