X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-we0-f180.google.com ([74.125.82.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTPS id 5452993 for flyrotary@lancaironline.net; Thu, 22 Mar 2012 20:42:10 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.82.180; envelope-from=msteitle@gmail.com Received: by werf3 with SMTP id f3so2233056wer.25 for ; Thu, 22 Mar 2012 17:41:35 -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=r0V7mO2PjiAKaWgxCU+KmI54tVSDIJcbkMExG40BWYA=; b=LPVEI+Q9M5nuzdRbyO7000e/gtDF3sSCYR7UuJKJYYXQkspOz/NwLK+4azb3nKL98D bGbzA7KcjleN7pVMMaQXvgjFMCbO63FnKo9loIukZaGsc/Kb59T7FFSrb5IQ732vEbc3 KI0S1HHCpskWqRaEVPCDy8ccFcpKIbJ2SOnt3dpqsLjVY6HGlfBI9AMVUOW6+wyRsxIb bEPW3h1ePKBW1D+36NfbrqQfkvi7gDvVO/T7n2Aiqp95isO+4Z7C1x0BnmdwHC8A5gAe OXR+ynwZ3N+JnOYl2XbHQQAXjkxaVO0uUj8P8uu87D+9ipVcaf7ptFNqefA2CGbH1NLh Ba/g== MIME-Version: 1.0 Received: by 10.180.80.9 with SMTP id n9mr1976958wix.4.1332463295251; Thu, 22 Mar 2012 17:41:35 -0700 (PDT) Received: by 10.223.104.13 with HTTP; Thu, 22 Mar 2012 17:41:35 -0700 (PDT) In-Reply-To: References: Date: Thu, 22 Mar 2012 19:41:35 -0500 Message-ID: Subject: Re: [FlyRotary] Re: #1 rotor cutting out From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=f46d0418254463c3f104bbde49b9 --f46d0418254463c3f104bbde49b9 Content-Type: text/plain; charset=ISO-8859-1 Ernest, I seriously doubt it. Do you have a picture, or can you explain your design? Mark On Thu, Mar 22, 2012 at 8:54 AM, Ernest Christley wrote: > The first iteration of my manifold exhibited similar symptoms to what you > describe. The EGTs of the #1 rotor wouldn't come off the peg until I hit > 3000rpm, and then would stay way below #2. I determined that the way I had > arranged it, the intake was creating a venturi vacuum in front of the #1 > rotor. Could you have a similar imbalance? > > Mark Steitle wrote: > > >Tracy, > > > >OUCH, that hurts! OK, here's the rest of the story. I've changed my > >intake manifold and changed injector sizes, so I'm back to the tuning > >phase. The B controller won't run right now as I haven't copied A to > >B yet. I'll have to do that before I can try the B controller. > >Thanks for reminding me that I typically do things the hard way. > > > >Mark > > > >On 3/21/12, Tracy wrote: > >> Trying the B controller should always be the FIRST thing to try since > it is > >> the easiest. This needs to be ingrained in all EC2/3 users mental (or > >> preferably written) engine failure check list. Everything including > the > >> coil & injector drivers are swapped out when selecting B controller. > Based > >> on the number of time I have asked if the B controller was tried when > called > >> about an engine anomally I have concluded that very few builders are > even > >> aware it it there : ). > >> > >> Tracy > >> > >> Sent from my iPad > >> > >> On Mar 21, 2012, at 3:58 PM, Mark Steitle wrote: > >> > >>> I have been chasing a problem with my p-port 3-rotor where the #1 > >>> rotor cuts out at around 3800 rpm, but comes back at around 5000 rpm. > >>> When this happens, I can hear a change in the exhaust, and I see the > >>> EGT on #1 drop way down to around 500*, so that's how I determined > >>> that it was the #1 rotor. The other two rotors continue to run > >>> normally. > >>> > >>> I have tried swapping coils, replacing the #1 rotor's plugs & coil > >>> wires, and swapping injectors. I have not tried the B controller, but > >>> that sounds like what I should try next. My suspicion is there may be > >>> a defective coil driver circuit in the EC-2. I have borrowed another > >>> 20B EC-2 to try, but won't be able to do the swap until this coming > >>> weekend. > >>> > >>> Since things have been so quiet on the list, I thought I would post > >>> this strange problem and see what suggestions others may have. > >>> > >>> Mark S. > >>> > >>> -- > >>> Homepage: http://www.flyrotary.com/ > >>> Archive and UnSub: > >>> http://mail.lancaironline.net:81/lists/flyrotary/List.html > >> > >> -- > >> Homepage: http://www.flyrotary.com/ > >> Archive and UnSub: > >> http://mail.lancaironline.net:81/lists/flyrotary/List.html > >> > > > >-- > >Homepage: http://www.flyrotary.com/ > >Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --f46d0418254463c3f104bbde49b9 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Ernest,

I seriously doubt it. =A0Do you have a picture, = or can you explain your design?

Mark=A0

On Thu, Mar 22, 2012 at 8:54 AM, Ernest Christley <= span dir=3D"ltr"><echristley@att.n= et> wrote:
The first iteration of my manifold exhibited= similar symptoms to what you describe. =A0The EGTs of the #1 rotor wouldn&= #39;t come off the peg until I hit 3000rpm, and then would stay way below #= 2. =A0I determined that the way I had arranged it, the intake was creating = a venturi vacuum in front of the #1 rotor. =A0Could you have a similar imba= lance?

Mark Steitle <msteitle@gmail.com> wrote:

>Tracy,
>
>OUCH, that hurts! =A0OK, here's the rest of the story. =A0I've = changed my
>intake manifold and changed injector sizes, so I'm back to the tuni= ng
>phase. =A0The B controller won't run right now as I haven't cop= ied A to
>B yet. =A0I'll have to do that before I can try the B controller. >Thanks for reminding me that I typically do things the hard way.
>
>Mark
>
>On 3/21/12, Tracy <rwstracy@gm= ail.com> wrote:
>> Trying the B controller should always be the FIRST thing to try si= nce it is
>> the easiest. =A0 This needs to be ingrained in all EC2/3 users men= tal (or
>> preferably written) engine failure check list. =A0 Everything incl= uding the
>> coil & injector drivers are swapped out when selecting B contr= oller. =A0 Based
>> on the number of time I have asked if the B controller was tried w= hen called
>> about an engine anomally I have concluded that very few builders a= re even
>> aware it it there : ).
>>
>> Tracy
>>
>> Sent from my iPad
>>
>> On Mar 21, 2012, at 3:58 PM, Mark Steitle <msteitle@gmail.com> wrote:
>>
>>> I have been chasing a problem with my p-port 3-rotor where the= #1
>>> rotor cuts out at around 3800 rpm, but comes back at around 50= 00 rpm.
>>> When this happens, I can hear a change in the exhaust, and I s= ee the
>>> EGT on #1 drop way down to around 500*, so that's how I de= termined
>>> that it was the #1 rotor. =A0The other two rotors continue to = run
>>> normally.
>>>
>>> I have tried swapping coils, replacing the #1 rotor's plug= s & coil
>>> wires, and swapping injectors. =A0I have not tried the B contr= oller, but
>>> that sounds like what I should try next. =A0My suspicion is th= ere may be
>>> a defective coil driver circuit in the EC-2. =A0I have borrowe= d another
>>> 20B EC-2 to try, but won't be able to do the swap until th= is coming
>>> weekend.
>>>
>>> Since things have been so quiet on the list, I thought I would= post
>>> this strange problem and see what suggestions others may have.=
>>>
>>> Mark S.
>>>
>>> --
>>> Homepage: =A0http://www.flyrotary.com/
>>> Archive and UnSub:
>>> http://mail.lancaironline.net:81/lists/flyrotary= /List.html
>>
>> --
>> Homepage: =A0http://www.flyrotary.com/
>> Archive and UnSub:
>> http://mail.lancaironline.net:81/lists/flyrotary/Lis= t.html
>>
>
>--
>Homepage: =A0ht= tp://www.flyrotary.com/
>Archive and UnSub: =A0 http://mail.lancaironline.net:81/l= ists/flyrotary/List.html

--
Homepage: =A0http:/= /www.flyrotary.com/
Archive and UnSub: =A0 http://mail.lancaironline.net:81/lists= /flyrotary/List.html

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