Dennis,
I have tried the standard 13B spark plugs, Renesis Irridium plugs, and Autolite racing plugs, all to no avail. I am running the D580 coils and 100LL. Yes, it sounds like it is just one rotor face at a time, but didn't know how to explain exactly what's happening. But it definitely gets your attention. I'm hoping there is an improvement (total cure) with the new 585 coils.
Mark
On Wed, Jan 5, 2011 at 2:32 PM, Dennis Havarlah <clouduster@austin.rr.com> wrote:
Steve
On run-up I get about 50 rpm change from both to leading or trailing. I normally do the check at about 3200 rpm.
Now that you mention it, I would guess that the occasional misfire is "probably" a total misfire of one rotor face. Don't really know though!
Do you ever have a similar event?
Dennis H.
----- Original Message -----
Sent: Wednesday, January 05, 2011 11:14 AM
Subject: [FlyRotary] Re: GM Coil Comparison
Dennis,
When you check the coils with the coil disable function on runup, is there enough of a change that you would expect to notice one plug intermittently not firing in cruise?
Steve Boese
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Dennis Havarlah
Sent: Wednesday, January 05, 2011 10:00 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: GM Coil Comparison
Mark - You are not alone with your occasional intermittent misfire. I also have the miss as you described - I only notice it in cruise. It happens once every 15 to 30 minutes! I wonder if it is one plug not firing instead of a complete miss of the cylinder. I'm using the Renesis RX-8 coils and RX-8 Iridium plugs with Tracy's EC-2. Most of the time I use mogas.
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