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More on JB's Lightning Bolt Maker

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miro forest
Senior Member
Username: miro

Post Number: 550
Registered: 11-2001

Posted on Sunday, January 30, 2011 - 05:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Oer the weekend, I was fussing a bit more with the ignition box for the St Lawrence.
I found that the current drawn before any changes was over 2 Amps.
I didn't like the idea of so much current gong through the timer contacts. so I played around with inserting a resistor in series with the coil leaving the relay connections unchanged.

I found that a resistor in the range of 1.5 to 3 ohms reduced the spark slightly, but also reduced the current to less than 1 Amp so there are less current going through the timer points.

Over 3 ohms the spark got too weak.


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