flyrotary@lancaironline.net Mailing List Archive

If your willing to experiment, you might consider using a Ford EDIS system. It has a limp home mode, where if it isn't getting a signal from a control computer, it will run with 10 degrees of advance. It has been universally categorized as a very reliable system.

I installed two systems. The first was controlled by a MegaSquirt, but the pickup was set to have 15 degrees of advance. The second, I set the pickup to have 15 degrees of advance. The first on leading plugs. The second on trailing.

-if the MegaSquirt died, the leading and trailing plugs would still fire at 25 advance

-if the primary EDIS died, the trailing plugs would still fire at 25 advance

-if the secondary EDIS died, the leading plugs would still fire under whatever advance was sent by the MegaSquirt.

-if the secondary EDIS and MegaSquirt died, the primary plugs would fire at 25 degrees advance.

Unfortunately, I never got to test the failure modes. :-(

On Tuesday, January 23, 2018 3:45 PM, "Charlie England ceengland7@gmail.com" <flyrotary@lancaironline.net> wrote:

He must have had a change of heart. I've had several exchanges with him over the years, and he has had a fair level of disdain for rotaries in general, and told me his controllers wouldn't work with the rotary's timing wheels.

Charlie

On Tue, Jan 23, 2018 at 1:13 PM, William Jepson wrjjrs@gmail.com <flyrotary@lancaironline.net> wrote:

Guys, I don't know if he is still offering it but SDSEFI (Simple Digital Systems, www.SDSEFI.com) has both an ignition only system and a full engine management system that will work for a 13B. His system doesn't have split firing, but most people running a high performance rotary do both plugs at once anyway. He has a newer dual in one box system, FOR AIRCRAFT that could be run simultaneously to do a split fire and be fully redundant.
Bill Jepson

On Tue, Jan 23, 2018 at 6:08 AM, Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net> wrote:

Maybe someone out there has a RWS original ignition controller they want to let go of. No programming required, uses 13-B standard pickup and ignition coils. Of course you'll have to use carburetor(s).

I have one, but really don't want to let go if it. Its simplicity is nice if just want to get 13-B running. (All you have to do is set timing and tune carburetors.)

Finn

On 1/22/2018 11:31 PM, william Aldridge willja67@hotmail.com wrote:

I'm building a one off experimental, therefore, i need a simple bullet proof Ignition system and am wondering what is currently available? I have the 2007 version of Tracy's conversion manual in which he gives the option of either using the stock distributor etc, or use a computerized ignition system with stock or Chevy ls coils.

To reiterate, since the airframe is unproven i only want to be worried about flying the plane not the engine. It's a small plane the size that would normally have 100hp installed (1200 lbs gross) so if I only have 150 hp I'll still be doing good. In other words I'm willing to sacrifice a little power for a lot of reliability and simplicity.

I don't like the idea of the stock distributor, since there isn't much room in the cowl and there's no redundancy. I also don't like the idea of electronic ignition. I've read enough stories of lengthy battles to get the computers to play nice with the engine and don't want to go that route. Again simplicity and reliability at the expense of power and fuel efficiency is what I'm after. Also planning on using a carb for the same reason. I can always upgrade the engine later if i want.

I figure there has to have been some other options come up in the last 10 years. I used to subscribe to the other guys list, but don't know if any of the ideas he put forth have merit.

Thanks,

Will Aldridge

Ps my build thread on hba here: http://www.homebuiltairp lanes.com/forums/showthread. php?t=16831

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