X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost02.isp.att.net ([207.115.11.52] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2719458 for flyrotary@lancaironline.net; Thu, 07 Feb 2008 10:54:18 -0500 Received-SPF: none receiver=logan.com; client-ip=207.115.11.52; envelope-from=keltro@att.net Received: from fwebmail30.isp.att.net ([207.115.11.170]) by isp.att.net (frfwmhc02) with SMTP id <20080207155338H0200afp8le>; Thu, 7 Feb 2008 15:53:38 +0000 X-Originating-IP: [207.115.11.170] Received: from [64.250.201.81] by fwebmail30.isp.att.net; Thu, 07 Feb 2008 15:53:38 +0000 From: "Kelly Troyer" To: "Rotary motors in aircraft" Subject: Re: Starting advance Date: Thu, 07 Feb 2008 15:53:38 +0000 Message-Id: <020720081553.19328.47AB29810009AF0E00004B8022243651029B0A02D29B9B0EBF019D9B040A05@att.net> X-Mailer: AT&T Message Center Version 1 (Oct 30 2007) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_19328_1202399618_0" --NextPart_Webmail_9m3u9jl4l_19328_1202399618_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Ernest, Now I recall the EDIS-4 has a 10 degree set advance.........Are you going with a carburator since a gravity emerg. fuel feed will not work with EFI ? -- Kelly Troyer "Dyke Delta"_13B ROTARY Engine "RWS"_RD1C/EC2/EM2 "Mistral"_Backplate/Oil Manifold -------------- Original message from Ernest Christley : -------------- > Kelly Troyer wrote: > > Ernest, > > Do not know if Lynn is on here lately but he has indicated in the past that > the 13B > > will start just fine with a 20-25 fixed advance.........Does the Megasquirt > have a fixed > > or variable advance either manual or based on RPM, etc ?? > > > The EDIS ignition controller has a set advance of 10 degrees. I can > modify that by offsetting my VR sensor another 15 or so. It can be > further modified by the Megasquirt with what's called the SAW input, but > that input is now optional. I'm setting it up so that it will be a > non-event if the Megasquirt drops out completely. I was worried that > the optimal advance might be different for starting, which would make a > computerless air-restart problematic. > > The plan, as it is coming together, is to have two EDIS-4 modules, one > for the leading and one for the trailing. Each has a separate VR > sensor, with the trailing's sensor offset 5 degree at the sensor wheel. > The distributor will be replace with a small generator, with just > enough capacity to run one set of coils and one EDIS module. That power > will be supplied to the ignition through a relay that will favor normal > ships power (ie, the small generator generally won't do anything). If > the alternator flies apart and the battery falls off the back of the > plane, I'll retain partial ignition. (Fuel will be handled through an > alternate gravity feed). I still need to test for interference between > the two VR sensors, but I should be able to start generating pictures of > completed work RSN. --NextPart_Webmail_9m3u9jl4l_19328_1202399618_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Ernest,

Now I recall the EDIS-4 has a 10 degree set advance.........Are you going

with a carburator since a gravity emerg. fuel feed will not work with EFI ?

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

-------------- Original message from Ernest Christley <echristley@nc.rr.com>: --------------

> Kelly Troyer wrote:
> > Ernest,
> > Do not know if Lynn is on here lately but he has indicated in the past that
> the 13B
> > will start just fine with a 20-25 fixed advance.........Does the Megasquirt
> have a fixed
> > or variable advance either manual or based on RPM, etc ??
> >
> The EDIS ignition controller has a set advance of 10 degrees. I can
> modify that by offsetting my VR sensor another 15 or so. It can be
> further modified by the Megasquirt with what's called the SAW input, but
> that input is now optional. I'm setting it up so that it will be a
> non-event if the Megasquirt drops out completely. I was worried that
> the optimal advance might be different for star ting, which would make a
> computerless air-restart problematic.
>
> The plan, as it is coming together, is to have two EDIS-4 modules, one
> for the leading and one for the trailing. Each has a separate VR
> sensor, with the trailing's sensor offset 5 degree at the sensor wheel.
> The distributor will be replace with a small generator, with just
> enough capacity to run one set of coils and one EDIS module. That power
> will be supplied to the ignition through a relay that will favor normal
> ships power (ie, the small generator generally won't do anything). If
> the alternator flies apart and the battery falls off the back of the
> plane, I'll retain partial ignition. (Fuel will be handled through an
> alternate gravity feed). I still need to test for interference between
> the two VR sensors, but I should be able to start generating pictures of
> completed work RSN.
--NextPart_Webmail_9m3u9jl4l_19328_1202399618_0--