X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-ma06.mx.aol.com ([64.12.78.142] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTP id 5452350 for flyrotary@lancaironline.net; Thu, 22 Mar 2012 10:58:24 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.78.142; envelope-from=bktrub@aol.com Received: from mtaomg-db01.r1000.mx.aol.com (mtaomg-db01.r1000.mx.aol.com [172.29.51.199]) by imr-ma06.mx.aol.com (8.14.1/8.14.1) with ESMTP id q2MEvaPB006297 for ; Thu, 22 Mar 2012 10:57:36 -0400 Received: from core-due004a.r1000.mail.aol.com (core-due004.r1000.mail.aol.com [172.29.67.77]) by mtaomg-db01.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id 91339E000095 for ; Thu, 22 Mar 2012 10:57:36 -0400 (EDT) References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: #1 rotor cutting out In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: bktrub@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CED65340AAB530_28A0_4EA_webmail-d148.sysops.aol.com" X-Mailer: AOL Webmail 35810-STANDARD Received: from 50.46.146.205 by webmail-d148.sysops.aol.com (149.174.18.38) with HTTP (WebMailUI); Thu, 22 Mar 2012 10:57:36 -0400 Message-Id: <8CED6534092E73E-28A0-139@webmail-d148.sysops.aol.com> X-Originating-IP: [50.46.146.205] Date: Thu, 22 Mar 2012 10:57:36 -0400 (EDT) x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1332428256; bh=stcId8in4OXA8vUmOu+Yb+B/NM5317GIzSaf/h2fpbY=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=l2hwkoD6hXj51uF1hE6w1yBG5nTN1WdFzXebSOOHLEnLgDv5Rpbpdo0kCAPyOm94n RqVAzGI+mLfLGobzRrUg5ivPp2HTJAZKLAlSRqFG2LusvnvoUDgr7mErOo0UCBZucN g5FSy3nQIKwXdAxgFJGdOCGKuarjt7iLokl7DeUc= X-AOL-SCOLL-SCORE: 0:2:517618688:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d33c74f6b3de03bbb This is a multi-part message in MIME format. ----------MB_8CED65340AAB530_28A0_4EA_webmail-d148.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="us-ascii" Yes, that change certainly did the trick. I've only flown once since due to= weather, but the engine runs great. First thing I did after tuning A was t= o copy to B before flying. Now I'm re- doing the cooling air scoop so that = it doesn't look like a hideous wart underneath the fuselage. The cooling sy= stem works great, but it was kludged together while trying to arrive at a w= orkable configuration.=20 Brian Trubee -----Original Message----- From: Tracy To: Rotary motors in aircraft Sent: Thu, Mar 22, 2012 6:14 am Subject: [FlyRotary] Re: #1 rotor cutting out Sorry Mark, that came out a bit harsher than I intended! BTW, the curre= nt=20 ersion of the EC2/3 software (since about two months ago) now programs both= A &=20 when you tune A. You can still program B differently when running on B i= f=20 esired as changes to B do not affect A. =20 On your rotor 1 symptoms between 3800 and 5000, I was wondering if you stil= l had=20 he resistor between CAS and EC2 that you were using to try and make the Ren= esis=20 AS work. If so, you might try eliminating it since you are using the origi= nal=20 AS. That's one reason I was anxious to hear if B had the same symptom. Sounds like the CAS sensor circuit change I installed in (Brian's ?) EC2 13= -BREW =20 ixed the high rpm breakup problem so anyone having similar symptoms on BREW= or=20 enesis engines using the EC2 should have that change too. Tracy Sent from my iPad On Mar 21, 2012, at 4:56 PM, Mark Steitle wrote: > Tracy, =20 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. =20 Mark =20 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. Ba= sed > on the number of time I have asked if the B controller was tried when cal= led > about an engine anomally I have concluded that very few builders are even > aware it it there : ). >=20 > Tracy >=20 > Sent from my iPad >=20 > On Mar 21, 2012, at 3:58 PM, Mark Steitle wrote: >=20 >> 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. >>=20 >> 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. >>=20 >> Since things have been so quiet on the list, I thought I would post >> this strange problem and see what suggestions others may have. >>=20 >> Mark S. >>=20 >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html >=20 =20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List= .html -- omepage: http://www.flyrotary.com/ rchive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.h= tml ----------MB_8CED65340AAB530_28A0_4EA_webmail-d148.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii"
Yes, that change certainly did the trick. I've only flown once since d= ue to weather, but the engine runs great. First thing I did after tuning A = was to copy to B before flying. Now I'm re- doing the cooling air scoop so = that it doesn't look like a hideous wart underneath the fuselage. The cooli= ng system works great, but it was kludged together while trying to arrive a= t a workable configuration.
Brian Trubee


= -----Original Message-----
From: Tracy <rwstracy@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, Mar 22, 2012 6:14 am
Subject: [FlyRotary] Re: #1 rotor cutting out

Sorry =
Mark, that came out a bit harsher than I intended!   BTW,   the current=20
version of the EC2/3 software (since about two months ago) now programs bot=
h A &=20
B when you tune A.   You can still program B differently when running on B =
if=20
desired as changes to B do not affect A.  =20

On your rotor 1 symptoms between 3800 and 5000, I was wondering if you stil=
l had=20
the resistor between CAS and EC2 that you were using to try and make the Re=
nesis=20
CAS work.  If so, you might try eliminating it since you are using the orig=
inal=20
CAS.   That's one reason I was anxious to hear if B had the same symptom.

Sounds like the CAS sensor circuit change I installed in (Brian's ?) EC2 13=
-BREW =20
fixed the high rpm breakup problem so anyone having similar symptoms on BRE=
W or=20
Renesis engines using the EC2 should have that change too.

Tracy

Sent from my iPad

On Mar 21, 2012, at 4:56 PM, Mark Steitle <msteitle@gmail.com> wrote:

> Tracy,
>=20
> 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.
>=20
> Mark
>=20
> On 3/21/12, Tracy <rwstracy@g=
mail.com> wrote:
>> Trying the B controller should always be the FIRST thing to try si=
nce it is
>> the easiest.   This needs to be ingrained in all EC2/3 users menta=
l (or
>> preferably written) engine failure check list.   Everything includ=
ing the
>> coil & injector drivers are swapped out when selecting B contr=
oller.   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 : ).
>>=20
>> Tracy
>>=20
>> Sent from my iPad
>>=20
>> On Mar 21, 2012, at 3:58 PM, Mark Steitle <msteitle@gmail.com> wrote:
>>=20
>>> 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 determ=
ined
>>> that it was the #1 rotor.  The other two rotors continue to ru=
n
>>> normally.
>>>=20
>>> I have tried swapping coils, replacing the #1 rotor's plugs &a=
mp; coil
>>> wires, and swapping injectors.  I have not tried the B control=
ler, but
>>> that sounds like what I should try next.  My suspicion is ther=
e 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 c=
oming
>>> weekend.
>>>=20
>>> Since things have been so quiet on the list, I thought I would=
 post
>>> this strange problem and see what suggestions others may have.
>>>=20
>>> Mark S.
>>>=20
>>> --
>>> Homepage:  http://www.flyrotary.com/
>>> Archive and UnSub:
>>> http://mail.lancaironline.net:81/lists/flyrotary/L=
ist.html
>>=20
>> --
>> Homepage:  h=
ttp://www.flyrotary.com/
>> Archive and UnSub:
>> http://mail.lancaironline.net:81/lists/flyrotary/List.=
html
>>=20
>=20
> --
> Homepage:  http:=
//www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net:81/list=
s/flyrotary/List.html

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