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Old 10-08-2012, 03:43 AM
  #486  
Gompy
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Default RE: CDI gr8flyer55

ORIGINAL: gr8flyer55

Rob, I too have experimented with different ways to connect it for a good strong positive signal. This is what I am trying to figure out. We need an interface connection to directly plug in for the signal, full strength to make it bright and reliable. A cheap led flashlight is a good light source which I have tried and it works perfectly.
I have many ways to do what need but involve complicated hookups. We just need a simple, easy to use, foolproof, system that anyone can have success with. A users tool, not an experimenters nightmare.
We could make it an accessory item. That is the add-on approach which will work.
One more item we need is the direct rpm readout to accurately check rpm with respect to timing. I have my own way of doing this with an optical tach pointed at the prop. Also had worked by pointing it at the timer's led and reading it, multiplying the reading by 2 (my tach is set for a 2 blade prop- 2 interuptions per revolution). This would be fine except now with the led on the board being so dim, doesn't work at all. Maybe using the RCExl inline tach is the solution there too. Just a thought.
If you use my standalone strobelight you can simple modify it with some resistors and a capacitor to isolate the HV of the spark.
Put a simple spring between the candle and sparkcap, and isolate the !!!!! metal from crocodilclip !!!!! you can pickup the spark for 100%
Some old strobelights use this kind of pickup the spark.

http://www.electronics.gompy.net/strobelight/index.htm
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