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Date: Fri, 04 Jan 2008 19:55:40 -0500
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From: Lorn H Olsen <lorn@dynacomm.ws>
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Subject: Re: One mag, One electronic ignition

Steve,

I don't know about early failure but I do know that Slick improved  
their bearings over 10 years ago. My 1990 Slick mags have about 1,400  
hrs and are still going strong.

Lorn

> From: "Steve Colwell" <mcmess1919@yahoo.com>
> Date: January 3, 2008 1:18:04 PM GMT-05:00
>
> I have not done any tests but I believe if One Mag and One  
> Electronic Ignition is used you are likely to fail the Mag Coil  
> prematurely (that would reduce the aprox. 400 to 600 hour normal  
> failure of a new Slick to a really unacceptable life). Why?? One of  
> the principal advantages of EI is the variable timing advance that  
> improves power and efficiency.  When the EI fires a plug before the  
> Mag, the pressure rise from earlier combustion may prevent the Mag  
> plug from firing. Maybe (probably?) preventing the Mag plug from  
> firing at least at higher altitudes where advance is the greatest. I  
> base my theory on the old Champion Spark Plug Testers that used an  
> air hose to increase pressure while firing a plug to check its  
> ability to continue to fire.  What do others say?
>
> Steve Colwell
>
>> Gary said....
>> On the other question about dual electronic ignitions:
>> I was thinking about building mine with a dual electronic ignition  
>> and the power source that I finally came up with (before I  
>> abandoned the idea in favor of using one mag)

--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.ws
LNC2, FB90/92, O-320-D1F, 1,300 hrs, N31161, Y47, SE Michigan