Re: [EVGRAY] Sven, this is old style 3 pole magneto coils for Outboard Marine outboards!

Database ID: 107162

2018-03-19T19:02:22-05:00

Norman Wootan <[email protected]>

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Sven, this 3 pole coil design was used for many years by Outboard Marine 
Corp 40s up to the 70s in the two cylinder magnetos.  I had a magneto 
test bench where I could experiment with the careful timing adjustments 
of the breaker points (before breakerless solid state commutation).  by 
careful adjustment of breaker gap/timing you could get magneto operating 
at peak of resonant curve in the "Ultra high Q" region!  At idle, (300 
RPM) a very well tuned magneto of this design would yield a good one 
inch bright blue arc.  The condenser for this type of coil was .026mfd 
which was a "perfect match" to the impedance of the iron core coil.  I 
had various values of condensers (capacitors) but only the proper value 
would yield maximum performance!

On 3/19/2018 6:02 PM, Norman Wootan [email protected] [EVGRAY] wrote:
> https://m.ebay.com/itm/Ignition-Coil-for-Some-Early-Model-Johnson-Evinrude-2-Cylinder-Replaces-584477-/220888888795
>
> Sent from Yahoo Mail on Android 
> <https://overview.mail.yahoo.com/mobile/?.src=Android>
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Date	Mon, 19 Mar 2018 19:02:22 -0500
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Subject	Re: [EVGRAY] Sven, this is old style 3 pole magneto coils for Outboard Marine outboards!
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From	Norman Wootan <[email protected]>