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From: Jerry Hey <jerryhey@earthlink.net>
Subject: Re: [FlyRotary] Re: MSD coils - Plug Fouling... again.
Date: Fri, 8 Dec 2006 13:55:28 -0500
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Perry are you still using direct drive?  What  max RPM are you or  
were you using, what prop, etc.  A friend who is building a Buttercup  
(Steve Whitman design) that only needs 100/125 hp.  13B with redrive  
is too heavy but without a drive it is a possibility.     Jerry

On Dec 8, 2006, at 1:43 PM, Perry Mick wrote:

> I just installed a CDI system on the leading coil in my RX-7,  
> testing it out before possibly putting it in the airplane.
>
> I don't have an issue with carbon plug fouling, only the dreaded  
> lead. Is the lead fouling an insulation effect (a lead compound) on  
> the electrode? If so, then I could see where a CDI system would  
> help punch through. However, if the plugs are fouling because the  
> lead puts a conductive film on the ceramic insulator, causing the  
> electrode to be shorted to ground, then maybe a CDI system can't  
> help with that?
>
> Interesting stat:  I have never ever in hundreds of hours flooded  
> the rotary engine on my Long-EZ. It always starts on the first crank.