X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-da02.mx.aol.com ([205.188.105.144] verified) by logan.com (CommuniGate Pro SMTP 5.4c2o) with ESMTP id 4892778 for flyrotary@lancaironline.net; Sun, 06 Mar 2011 13:49:10 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.105.144; envelope-from=Bktrub@aol.com Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-da02.mx.aol.com (8.14.1/8.14.1) with ESMTP id p26ImUTi027036 for ; Sun, 6 Mar 2011 13:48:30 -0500 Received: from Bktrub@aol.com by imo-da03.mx.aol.com (mail_out_v42.9.) id q.c5f.724442ba (55728) for ; Sun, 6 Mar 2011 13:48:25 -0500 (EST) Received: from smtprly-de03.mx.aol.com (smtprly-de03.mx.aol.com [205.188.249.170]) by cia-md03.mx.aol.com (v129.9) with ESMTP id MAILCIAMD033-b2454d73d6f711a; Sun, 06 Mar 2011 13:48:25 -0500 Received: from webmail-m017 (webmail-m017.sim.aol.com [64.12.101.101]) by smtprly-de03.mx.aol.com (v129.9) with ESMTP id MAILSMTPRLYDE034-b2454d73d6f711a; Sun, 06 Mar 2011 13:48:23 -0500 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: Miss above staging point. Date: Sun, 06 Mar 2011 13:48:22 -0500 X-AOL-IP: 69.84.254.253 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_8CDAA46342D4879_1D28_40C57_webmail-m017.sysops.aol.com" X-Mailer: AOL Webmail 33356-STANDARD Received: from 69.84.254.253 by webmail-m017.sysops.aol.com (64.12.101.101) with HTTP (WebMailUI); Sun, 06 Mar 2011 13:48:22 -0500 Message-Id: <8CDAA4634262453-1D28-1E111@webmail-m017.sysops.aol.com> X-Spam-Flag:NO X-AOL-SENDER: Bktrub@aol.com ----------MB_8CDAA46342D4879_1D28_40C57_webmail-m017.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" I"m starting to think that it may be spark related, maybe something to do= with the wiring to the coils, maybe inductance, or how the plug wires run= near the coil wiring, I'll do some experimentation. Brian Trubee -----Original Message----- From: Mark Steitle To: Rotary motors in aircraft Sent: Sun, Mar 6, 2011 6:03 am Subject: [FlyRotary] Re: Miss above staging point. Bill,=20 Maybe Lynn can comment on this, but personally I don't sandblast plugs. = My suggestion is to replace the plugs with new ones. Most of my mis-fire= problems have been cured by either tuning or new spark plugs.=20 Mark P.S. Its a beautiful Spring day in Austin and I'm heading to the airport= (will fly, assuming everything checks out).=20 On Sun, Mar 6, 2011 at 7:14 AM, Bill Bradburry = wrote: Mark, The car the engine came from had about 1400 miles on it. I have run about= 40 gallons of gas thru it. I will have to check the coils for darkening.= Also same for plug wires. I am using the stock Renesis plugs. I might= try cleaning them. =20 On a previous occasion, I flooded the engine and it would not start till= I sand blasted the plugs. After that it started normally. =20 This problem just happened on the second takeoff. The engine was running= smoothly at all rpms till I made the second takeoff. It started to miss= and pop and the rpm would only go to about 6300. after I got in the air,= I dialed the prop back and the rpm was around 6000 and the engine smoothe= d out again and was ok the rest of the flight. Now it is missing on the= ground above the staging point. I have mine set at 16 inches. I watched the mixture and it seems fine on both sides of the staging point= and also on up in the higher rpms. The only difference is that the engin= e starts to miss.erratically. I didn=E2=80=99t notice the EGT as Tracy su= ggested. I need to switch to the page that shows the temp of both of them= and check that today. =20 Bill =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Be= half Of Mark Steitle Sent: Saturday, March 05, 2011 9:50 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Miss above staging point. =20 Bill,=20 =20 How do the coils look (underneath)? Are there dark areas in the potting= material where they have gotten hot? There is a history of coil failures= in the RX-8's after about 30k miles. =20 =20 How many hours on the plugs/wires? How do they look? =20 Mark =20 On Sat, Mar 5, 2011 at 8:36 PM, Bill Bradburry = wrote: Mark, =20 I have the stock Renesis coils. =20 Bill B =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Be= half Of Mark Steitle Sent: Saturday, March 05, 2011 6:19 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Miss above staging point. =20 Bill,=20 =20 Which coils are you running? I chased an intermittent miss which occurred= in the 6000 -7000 range. I upgraded to the LS2 "Yukon" coils and the mis= s was gone. =20 =20 Mark S. On Sat, Mar 5, 2011 at 4:56 PM, Bill Bradburry = wrote: I have developed a miss above the staging point. The fuel pressure seems= ok, the mixture also seems ok. I am at a loss. =20 To try and troubleshoot, I am considering getting above the staging point= and disabling the primaries and secondaries to see if I can identify whic= h is the cause. Since it runs ok below the stage, I assume it is not the= primaries. =20 I recently changed my fuel filters and installed a large canister filter.= There seems a possibility that I introduced some contamination that clo= gged an injector. Other wise it seems it must be spark related. This jus= t happened one flight ago. The engine was running fine, till that last ta= keoff. It was missing and would only get about 6300 rpm. After take off,= I turned the prop back and slowed the engine down to below that number an= d it smoothed out and ran fine the res of the flight. Today while taxiing= around, I noticed that the miss was back. =20 Opinions welcomed. =20 Bill B =20 =20 =20 =20 ----------MB_8CDAA46342D4879_1D28_40C57_webmail-m017.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"
I"m starting to think that it may be spark related, maybe something= to do with the wiring to the coils, maybe inductance, or how the plug wir= es run near the coil wiring, I'll do some experimentation.
 
Brian Trubee



-----Original Message-----
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sun, Mar 6, 2011 6:03 am
Subject: [FlyRotary] Re: Miss above staging point.

Bill, 
Maybe Lynn can comment on this, but personally I don't sandblast plug= s.  My suggestion is to replace the plugs with new ones.  Most= of my mis-fire problems have been cured by either tuning or new spark plu= gs. 

Mark

P.S.  Its a beautiful Spring day in Austin and I'm heading to th= e airport (will fly, assuming everything checks out). 


On Sun, Mar 6, 2011 at 7:14 AM, Bill Bradburry <bbradburry@b= ellsouth.net> wrote:
Mark,=
The car the engine= came from had about 1400 miles on it.  I have run about 40 gallons= of gas thru it.  I will have to check the coils for darkening. = Also same for plug wires.  I am using the stock Renesis plugs. = I might try cleaning them.
 
On a previous occas= ion, I flooded the engine and it would not start till I sand blasted the= plugs.  After that it started normally.
 
This problem just= happened on the second takeoff.  The engine was running smoothly at= all rpms till I made the second takeoff.  It started to miss and pop= and the rpm would only go to about 6300.  after I got in the air, I= dialed the prop back and the rpm was around 6000 and the engine smoothed= out again and was ok the rest of the flight.  Now it is missing on= the ground above the staging point.  I have mine set at 16 inches.
I watched the mixtu= re and it seems fine on both sides of the staging point and also on up in= the higher rpms.  The only difference is that the engine starts to= miss.erratically.  I didn=E2=80=99t notice the EGT as Tracy suggeste= d.  I need to switch to the page that shows the temp of both of them= and check that today.
 
Bill<= /div>
 
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Saturday, March 05,= 2011 9:50 PM
To: Rotary motors in aircr= aft
Subject: [FlyRotary] Re:= Miss above staging point.
 
Bill, 
 
How do the coils look (underneath)?  Are there= dark areas in the potting material where they have gotten hot?  Ther= e is a history of coil failures in the RX-8's after about 30k miles.  = ;  
 
How many hours on the plugs/wires?  How do they= look?
 
Mark  
On Sat, Mar 5, 2011 at 8:36 PM, Bill Bradburry <bbradburry@bellsouth.net>= wrote:
Mark,=
 
I have the stock Re= nesis coils.
 
Bill B
 
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Saturday, March 05,= 2011 6:19 PM
To: Rotary motors in aircr= aft
Subject: [FlyRotary] Re:= Miss above staging point.
 
Bill, 
 
Which coils are you running?  I chased an interm= ittent miss which occurred in the 6000 -7000 range.  I upgraded to th= e LS2 "Yukon" coils and the miss was gone.  
 
Mark S.=
On Sat, Mar 5, 2011 at 4:56 PM, Bill Bradburry <bbradburry@bellsouth.net>= wrote:
I have developed a= miss above the staging point.  The fuel pressure seems ok, the mixtu= re also seems ok.  I am at a loss.
 
To try and troubles= hoot, I am considering getting above the staging point and disabling the= primaries and secondaries to see if I can identify which is the cause.&nb= sp; Since it runs ok below the stage, I assume it is not the primaries.
 
I recently changed= my fuel filters and installed a large canister filter.  There seems= a possibility  that I introduced some contamination that clogged an= injector.  Other wise it seems it must be spark related.  This= just happened one flight ago.  The engine was running fine, till tha= t last takeoff.  It was missing and would only get about 6300 rpm.&nb= sp; After take off, I turned the prop back and slowed the engine down to= below that number and it smoothed out and ran fine the res of the flight.=   Today while taxiing around, I noticed that the miss was back.
 
Opinions welcomed.<= /SPAN>
 
Bill B
 
 
 
 

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