X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wx-out-0506.google.com ([66.249.82.230] verified) by logan.com (CommuniGate Pro SMTP 5.2.2) with ESMTP id 2893460 for flyrotary@lancaironline.net; Sun, 04 May 2008 20:20:20 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.249.82.230; envelope-from=msteitle@gmail.com Received: by wx-out-0506.google.com with SMTP id i27so657249wxd.25 for ; Sun, 04 May 2008 17:19:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; bh=T8f3rvCQtdmaDzLkp4N2nUtlhzVq1uqTTPPpYgXSMhI=; b=LS+/34MGK8oAEZJry/y1MJc8KXSkpjogHwz2m8OXCHFQjXp2t+bhgLli/m/CoA60qVJf//QyH+flUX1UcuVuM2I0ZJqEkREGIklfDYfaYUL+2m8PVg2wOKcqAHqlPIdgLSqRHsJ1QpJUw3wkRuAlmAMvLN50j9phgukk96+SSvs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=vKqLr6sWatNQ1PKRtcFC4fYdpkI28ZTUDumN5ymciT+8EbixLFYGcvUYKJw3syKLTOtehEBFZuFg1BdCTVCK88SQm4wP265oFOylqne6i5UZsNBX2/NG+H7R8AbpYlKImadCkTVpebFjawXGMj1mJYjg6BtPd7LL/dvN6V38SPk= Received: by 10.70.42.18 with SMTP id p18mr6160918wxp.59.1209946774872; Sun, 04 May 2008 17:19:34 -0700 (PDT) Received: by 10.70.94.10 with HTTP; Sun, 4 May 2008 17:19:34 -0700 (PDT) Message-ID: <5cf132c0805041719ga013c8fo2e22051baf8a0be2@mail.gmail.com> Date: Sun, 4 May 2008 19:19:34 -0500 From: "Mark Steitle" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Jet-A In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_18506_25237464.1209946774860" References: ------=_Part_18506_25237464.1209946774860 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Dave, Well, actually I've been there, done that. Not a rotary, but I have a twin cylinder 18 hp riding mower that I unknowingly refueled with a few gallons of diesel two years back. I didn't want to drain it all out, so I tried to run it. It actually ran pretty good, although it was a little down on power. I don't recall how much fuel was in the tank when I poured in the diesel, but it would start cold and would run well enough to mow the yard. The diesel would settle out during periods on non-use. When I went out to start it again, it would be a little more difficult to start than usual, and it would smoke like crazy for the first few minutes and cloud up the neighborhood (my own mosquito abatement project). I ran all the diesel out and refilled it with auto fuel and all is back to normal now. So, I would surmise that if it would run in a piston lawnmower engine, it would probably run in a Wankel. Mark On Sun, May 4, 2008 at 11:04 AM, David Leonard wrote: > Ok, so who is brave enough to go out there and do it and tell us all what > happens?? > > I might be willing to put in a couple gallons of jet-a into one of the > tanks just to see what happens. I could program computer B to be more jet-a > friendly. I assume that means lean and retarded timing. Anyone have any > specifics? (ie. how lean should it be?) > > Dave Leonard > > On Sun, May 4, 2008 at 8:53 AM, wrote: > > > I love that scientific talk. > > > > Mistral is working on the JetA for fuel idea. Since in normally > > aspirated trim the rotary is difficult to detonate, it is insensitive to a > > fuels octane rating. So if it already ran on jet A and motor fuel as well, > > it couldn't be affected by a misfueling situation. > > > > During W.W.II auto fuel tanks held coal oil, or kerosene. An add on > > little tank of gasoline was rigged up on the fire wall with some plumbing to > > switch between the two. The car would be started and warmed up on gasoline > > and then switched to coal oil for the trip to the defense plant. When the > > destination was in sight, the switch was made back to gasoline so the engine > > would start for the trip home. Even at 7:1 compression the engines would > > knock (detonate) and smoke, and timing changes may have been involved, but > > it worked. > > > > Fuel injection with its forced atomization, would make the transition > > even easier. > > > > Lynn e. Hanover > > > > > > > > In a message dated 5/4/2008 6:51:02 AM Pacific Daylight Time, > > eanderson@carolina.rr.com writes: > > > > OK, here's a question out of left field. A Lancair recently went down > > in AZ right after being refueled. On the Lancair list, the speculation is > > that it was fueled with Jet-A. I was curious, if this happened to a rotary, > > would it run (continue to produce power) on jet-a or would the engine quit? > > I speculate that due to the fuel pumps continuously circulating the fuel to > > the fuel rails and back to the tank, it probably wouldn't even start, but if > > it did, would it continue to run on the mix of jet-a and mogas? I guess it > > depends on the ratio of mogas to jet-a. Assuming that the fuel was almost > > 100% jet-A, would it still run? > > > > Ed, you've pretty much had everything happen to you that can possibly > > happen in an airplane, what-you-say? > > > > > > Mark S. > > > > > > > > > > ------------------------------ > > Wondering what's for Dinner Tonight? Get new twists on family favorites > > at AOL Food > > . > > > > > > -- > David Leonard > > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net ------=_Part_18506_25237464.1209946774860 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Dave,
Well, actually I've been there, done that.  Not a rotary, but I have a twin cylinder 18 hp riding mower that I unknowingly refueled with a few gallons of diesel two years back.  I didn't want to drain it all out, so I tried to run it.  It actually ran pretty good, although it was a little down on power.  I don't recall how much fuel was in the tank when I poured in the diesel, but it would start cold and would run well enough to mow the yard.  The diesel would settle out during periods on non-use.  When I went out to start it again, it would be a little more difficult to start than usual, and it would smoke like crazy for the first few minutes and cloud up the neighborhood (my own mosquito abatement project).  I ran all the diesel out and refilled it with auto fuel and all is back to normal now.  So, I would surmise that if it would run in a piston lawnmower engine, it would probably run in a Wankel. 

Mark


On Sun, May 4, 2008 at 11:04 AM, David Leonard <wdleonard@gmail.com> wrote:
Ok, so who is brave enough to go out there and do it and tell us all what happens??

I might be willing to put in a couple gallons of jet-a into one of the tanks just to see what happens.  I could program computer B to be more jet-a friendly.  I assume that means lean and retarded timing.  Anyone have any specifics?  (ie. how lean should it be?)

Dave Leonard

On Sun, May 4, 2008 at 8:53 AM, <Lehanover@aol.com> wrote:
I love that scientific talk.
 
Mistral is working on the JetA for fuel idea. Since in normally aspirated trim the rotary is difficult to detonate, it is insensitive to a fuels octane rating. So if it already ran on jet A and motor fuel as well, it couldn't be affected by a misfueling situation.
 
During W.W.II auto fuel tanks held coal oil, or kerosene. An add on little tank of gasoline was rigged up on the fire wall with some plumbing to switch between the two. The car would be started and warmed up on gasoline and then switched to coal oil for the trip to the defense plant. When the destination was in sight, the switch was made back to gasoline so the engine would start for the trip home. Even at 7:1 compression the engines would knock (detonate) and smoke, and timing changes may have been involved, but it worked.
 
Fuel injection with its forced atomization, would make the transition even easier.
 
Lynn e. Hanover
 
 
 
In a message dated 5/4/2008 6:51:02 AM Pacific Daylight Time, eanderson@carolina.rr.com writes:
OK, here's a question out of left field.  A Lancair recently went down in AZ right after being refueled.  On the Lancair list, the speculation is that it was fueled with Jet-A.  I was curious, if this happened to a rotary, would it run (continue to produce power) on jet-a or would the engine quit?  I speculate that due to the fuel pumps continuously circulating the fuel to the fuel rails and back to the tank, it probably wouldn't even start, but if it did, would it continue to run on the mix of jet-a and mogas?   I guess it depends on the ratio of mogas to jet-a.  Assuming that the fuel was almost 100% jet-A, would it still run? 

Ed, you've pretty much had everything happen to you that can possibly happen in an airplane, what-you-say? 


Mark S.



Wondering what's for Dinner Tonight? Get new twists on family favorites at AOL Food.



--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net

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