Author Topic: Primary voltage measured @ coil engine running  (Read 214 times)

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Offline xlfan

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Primary voltage measured @ coil engine running
« on: April 28, 2018, 10:07:28 AM »
Has anyone tried to measure primary voltage @ coil with engine running?  Wouldn't you expect close to battery voltage even if single-fire coil and digital Fluke meter?

Offline gordonr

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Re: Primary voltage measured @ coil engine running
« Reply #1 on: April 29, 2018, 05:02:20 PM »
I cant say if you would gain anything correcting it unless the voltage drop is big. But being the electrician type I would fix it. It would bother me. Lol
"If was easy everyone would do it"

Offline Burnout

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Re: Primary voltage measured @ coil engine running
« Reply #2 on: April 29, 2018, 05:32:26 PM »
It should be very close to battery voltage, any voltage drop can be a clue for future trouble or possible loss of performance.

Handle bar wires are often suspect.
They don't call me Ironhead Rick just because I'm "hard headed"

Offline PIRSCH FIRE WAGON

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Re: Primary voltage measured @ coil engine running
« Reply #3 on: April 30, 2018, 01:35:16 AM »
For the Circuit itself, should be no more than 0.5 VDC drop.

As for the Coil, I believe they can operate below 10 VDC (I can look it up) and still generate the specified field. Not optimal for life expectancy. But, operates normal nonetheless.
Tom