Ignition Coils - cheap, quick qnd easy

Discussion in 'Tips and Tricks' started by Gearsguy, Mar 19, 2012.

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  1. Nov 18, 2012 #21

    Niceonetidy

    Niceonetidy

    Niceonetidy

    Colin D

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    Well chaps, I have looked for a cheap reliable, small compact ignition system for petrol ic engines. And so far, this is the bet I have found. . . . . . .

    http://www.hobbyking.com/hobbyking/store/__10996__Replacement_CDI_Ignition_for_RCG_50CC_Engines.html

    $20 for a complete system including the hall sensor. And they have twin cylinder versus too for another ten dollars. This unit will output three sparks In Quick succession. I have one here and its going on a friends cnc made engine. I will let you know how it goes. This unit make a big spark !

    Cheers

    Colin
     
  2. May 20, 2019 #22

    IC-man

    IC-man

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    Hi all,
    About a week ago I found a transistor ign. System using hall trigger that was stated as fail safe in the event of engine stopping with ign left on. I can't find it now. Any ideas where I can find it people.
    Thanks All.
     
  3. May 20, 2019 #23

    TonyM

    TonyM

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  4. May 20, 2019 #24

    propclock

    propclock

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    Beware the COP primary resistance is VERY low.
    I have cloned the Dave Sage ignition IGBT system for myself and members of
    Bay Area Engine Modelers. BAEM. I use the same 5$ coils and they work great.
    But I recommend a 4x AA nimh battery supply. They can only supply so much current.
    With a BIG 12v battery, you can draw a lot of current. Add a ballast resistor or
    reduce the voltage some way. They can be made quite small if you trim all the excess
    plastic/ connectors off. Just my 1.414 cents worth.
     
  5. May 20, 2019 #25

    IC-man

    IC-man

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    Hi Tony it looks might it might be the one but can't find the circuit diagram. I have been playing around with many different circuits over the years with various results. I find one of the main problems is the earth has to be really good. Otherwise it blows the P transistor, the hall, or both.
    Perhaps I'm being stupid but more help to find the diagram would be useful ( I did notice it has had an update but could find any circuits)
    Thanks anyway.
    Graham
     
  6. May 20, 2019 #26

    IC-man

    IC-man

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    Hi Tony,
    Thanks for you help I've found it now.
    Graham
     
  7. May 21, 2019 #27

    dsage

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