X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-qc0-f180.google.com ([209.85.216.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTPS id 5484494 for flyrotary@lancaironline.net; Tue, 17 Apr 2012 00:58:31 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.216.180; envelope-from=wrjjrs@gmail.com Received: by qcmv28 with SMTP id v28so2001450qcm.25 for ; Mon, 16 Apr 2012 21:57:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=i2VmdVJiiiEPeTDP1QDRqaZcIpFkrD3tHEY/TXk1gQQ=; b=bfuR1YTPd43ckE0m+Ec9tL2kQHt5Fpp8fmC+dDs2ICEbdkWcAc6YwuMEbvpR2/vOqg qf0K3Z06xKgDk6ClXPpTC7hdWPSd4oFb/XhKjtcY5maTWXHLriHSL6KbJv3FQoxnfrpG aeOVQqEqc9wCi1WZMGdUcOxG0QrIbAxm9zE6gYRhuqjQsxVH3tR0I+1ChKKkJ/SXHnn1 Ye2VwMGTLuYtReR/qqhTLxHK6uASMyfItE8dQvCsWtfKfW6D3H0g0U4o8cTZ4Ihgnb2b F0jRJERo817D8LjsJXzQY+o1AaFUJXosH818YLTF0BVASS4Tm9JeXU/rW1mBVSvZXaRG jlgw== MIME-Version: 1.0 Received: by 10.224.101.72 with SMTP id b8mr18740802qao.53.1334638674905; Mon, 16 Apr 2012 21:57:54 -0700 (PDT) Received: by 10.229.28.84 with HTTP; Mon, 16 Apr 2012 21:57:54 -0700 (PDT) Received: by 10.229.28.84 with HTTP; Mon, 16 Apr 2012 21:57:54 -0700 (PDT) In-Reply-To: References: Date: Mon, 16 Apr 2012 21:57:54 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Laser Ignition, was: [FlyRotary] Re: The 16X is A L I V E... From: William Jepson To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=20cf30667c2f1f09f404bdd8c888 --20cf30667c2f1f09f404bdd8c888 Content-Type: text/plain; charset=ISO-8859-1 Kelly, the coil on plug on the Yamaha is a cylindrical part about 3-1/2 to 4 inches long, and about 1 inch diameter. I'll get some photos asap. The coil is retained by a rubber rib on the coil into a groove in the spark plug well. The Yamaha is a twin cam engine with the plugs deep in the head. It is a ideal setup for this coil system. The well on some of the two rotors might hold them OK. I like this technology for our use. Bill Jepson On Apr 16, 2012 5:07 PM, "Kelly Troyer" wrote: > Bill, > Would you happen to have a photo of the "Coil On Plug" of your Yamaha > ??...............Interested in how they > are secured to the sparkplug............... > > Kelly Troyer > > On Mon, Apr 16, 2012 at 12:32 AM, William Jepson wrote: > >> Ok folks the thing is all you need is a SUCCESSFUL spark. It does not >> matter if the ignition is caused by a electrical spark or laser. The >> important thing is reliability. The motorcycle industry has been changing >> to coil-on-plug systems. Remember that many of the sportbikes have redlines >> over 13,000 rpm. These coil on plug systems can easily handle our rotary >> needs. Using a programer to control spark it would be easy to trigger them, >> and you could do a split or same time firing. We don't need bleeding edge >> tech. We need easy tech. My Yamaha 1000 uses the coil on plug technology. >> It is a 2008 model. We could harvest this tech for our use. The big >> advantage is only low-tension switching island needed. Using coil on plug >> you would have 4 coils on a 2 rotor. A single failure would only kill one >> plug. >> Bill Jepson >> On Apr 13, 2012 9:38 AM, "Ernest Christley" wrote: >> >>> CozyGirrrl@aol.com wrote: >>> > And all this will work only if the combustion chamber is always squeaky >>> > clean, no deposits or film on the windows, once that happens it all >>> goes >>> > to heck quickly. >>> > >>> >>> If you've got a film building up on the rotor housing's chrome face, >>> aren't you behind the curve already? I could see >>> it being a problem in a piston cylinder's head. I've had to chip off >>> gunk with a screwdriver it had built up so thick. >>> But they aren't constantly being wiped by an apex seal like in a rotary. >>> >>> > > --20cf30667c2f1f09f404bdd8c888 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable

Kelly, the coil on plug on the Yamaha is a cylindrical part about 3-1/2 = to 4 inches long, and about 1 inch diameter. I'll get some photos asap.= The coil is retained by a rubber rib on the coil into a groove in the spar= k plug well. The Yamaha is a twin cam engine with the plugs deep in the hea= d. It is a ideal setup for this coil system. The well on some of the two ro= tors might hold them OK. I like this technology for our use.
Bill Jepson

On Apr 16, 2012 5:07 PM, "Kelly Troyer"= ; <keltro@gmail.com> wrote:
Bill,
=A0 Would you happen to have a photo of the "Coil On Plug" o= f your Yamaha ??...............Interested in how they
are secured to the sparkplug...............
=A0
Kelly Troyer

On Mon, Apr 16, 2012 at 12:32 AM, William Jepson= <wrjjrs@gmail.com> wrote:

Ok folks the thing is all you need is a SUCCESSFUL spark. It does not ma= tter if the ignition is caused by a electrical spark or laser. The importan= t thing is reliability. The motorcycle industry has been changing to coil-o= n-plug systems. Remember that many of the sportbikes have redlines over 13,= 000 rpm. These coil on plug systems can easily handle our rotary needs. Usi= ng a programer to control spark it would be easy to trigger them, and you c= ould do a split or same time firing. We don't need bleeding edge tech. = We need easy tech. My Yamaha 1000 uses the coil on plug technology. It is a= 2008 model. We could harvest this tech for our use. The big advantage is o= nly low-tension switching island needed. Using coil on plug you would have = 4 coils on a 2 rotor. A single failure would only kill one plug.
Bill Jepson

On Apr 13, 2012 9:38 AM, "Ernest Christley&= quot; <echristle= y@att.net> wrote:
CozyGirrrl@aol.com wrote:
> And all this will = work only if the combustion chamber is always squeaky
> clean, no deposits or film on the windows, once that happens it all go= es
> to heck quickly.
>

If you've got a film buildin= g up on the rotor housing's chrome face, aren't you behind the curv= e already? =A0I could see
it being a problem in a piston cylinder's head. =A0I've had to chip= off gunk with a screwdriver it had built up so thick.
=A0But they aren&= #39;t constantly being wiped by an apex seal like in a rotary.



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