X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Received: from mx05.syd.iprimus.net.au ([210.50.30.235] verified) by logan.com (CommuniGate Pro SMTP 5.1.4) with ESMTP id 1710861 for flyrotary@lancaironline.net; Sun, 24 Dec 2006 06:22:45 -0500 Received-SPF: pass receiver=logan.com; client-ip=210.50.30.235; envelope-from=daval@iprimus.com.au Received: from unknown (HELO [192.168.1.8]) ([58.179.209.35]) by mx05.syd.iprimus.net.au with ESMTP; 24 Dec 2006 22:21:46 +1100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgAAAB/yjUU6s9Ej/2dsb2JhbAAN X-IronPort-AV: i="4.12,208,1165150800"; d="scan'208"; a="22634190:sNHT23264591" Mime-Version: 1.0 (Apple Message framework v624) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-6--322895482 Message-Id: <5301d2f56c337a247d47ec5119e4adaf@iprimus.com.au> From: david mccandless Subject: Re: [FlyRotary] Re: Dead Rotor at 3000ft Date: Sun, 24 Dec 2006 20:21:05 +0800 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.624) --Apple-Mail-6--322895482 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=WINDOWS-1252; format=flowed Hi Joe, Right, but how many hours does this engine have on it since overhaul?=20 It is not like you were hard on a new engine, is it? Of course I am glad you are here to tell the tale; Just asking, BR, Dave McC On 24, Dec , at 4:27 PM, Todd Bartrim wrote: > Hi Joe; > =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Glad you got back on the = ground safely. =46rom the=20 > compression results I=92d say your prognosis is accurate. How was the=20= > other rotor? > This is another good testament to the rotaries ability to continue=20 > running under duress. > =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 I can understand your = disappointment at yet another=20 > little surprise in the air, however it=92s important to remember that=20= > even though there are a number who have forged a path ahead of you=20 > making your installation easier, you still are blazing a trail of your=20= > own. This is an experimental hobby and each installation is unique,=20 > demanding that we are always in tune with the engine and ready for=20 > anything that fate can throw at us. > =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Before each flight you = gotta ask yourself =93Am I ready=20 > to be a hairy chested hero today=94 > =A0 > S. Todd Bartrim > C-FSTB > Turbo13B RV9 > http://www3.telus.net/haywire/RV-9/C-FSTB.htm > http://members.cox.net/rogersda/rotary/configs.htm#C-FSTB > =A0 > =A0 > =A0 > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]=20= > On Behalf Of Joe Hull > Sent: Saturday, December 23, 2006 8:16 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Dead Rotor at 3000ft > =A0 > The weather today in the Seattle area was marginal for flying =96 but = a=20 > nice hole opened around my home airport (KAWO) and I was there=20 > tinkering with the plane anyway (re-torqueing the prop)=96 so up I = went.=20 > I did 4 touch and goes just for a wee bit of practice and then=20 > departed the pattern toward a bigger hole that would be legal to climb=20= > through VFR. I flew about 30 miles northwest of the airport out to the=20= > edge of the Puget Sound and enjoyed just being in the air. Power=20 > setting was about 4400RPM and I was loping along at a lazy 135kts.=A0 = I=20 > turned around and headed back for Arlington and decided to ramp up the=20= > power to ramming speed =96 errr I mean cruising speed. In a few = minutes=20 > I was cruising along at 170kts at about 5500RPM. Then all of a sudden=20= > BAM =96 the engine stumbled and RPM=92s dropped to 2300RPM.=A0 I = immediately=20 > throttled back and switched tanks while turning toward the airport.=20 > Altitude was 3200FT (about 3000AGL) and I was maybe 7 miles from the=20= > airport. The engine was running real rough and wouldn=92t give me more=20= > than 2300RPM. Even with that little bit of power I ended up entering=20= > the 45 to the pattern at about 800 above pattern altitude. It was=20 > pretty slow at the airport so I easily made a normal landing and was=20= > able to taxi back to the hanger under power. > =A0 > At the hangar I double checked everything I could from the cockpit =96=20= > fuel pressure good at 36PSI, oil pressure good at 55PSI at 2300 RPM,=20= > MicroTech ECM showed =93OK=94 for the size major areas it monitors. = So, I=20 > shut it down and pulled the cowl. I pulled the prop through a number=20= > of times and it seemed that there was a couple places where I should=20= > have been hearing a =93pop=94 in the exhaust but didn=92t. I also = notice=20 > that there is a nice ding in the prop that is about an inch long =96=20= > that wasn=92t there when I left (remember I=92m a pusher). > =A0 > I got the engine compression gage and proceeded to take the spark plug=20= > out of the front rotor =96 top =96 BR9EQ-14. Hmmm =96 I don=92t = remember there=20 > being a casing around the electrode =96 and why is that casing = sliding?=A0=20 > Apparently the casing around the electrode broke somewhere inside the=20= > sparkplug and into two halves long ways down the electrode. Each half=20= > slides freely up and down the electrode and even sticks out a little=20= > from the end. > =A0 > I put the compression gage on and it looks like I get 30-30-70 when I=20= > turn the engine over. I tried this several times and there is=20 > definitely a couple of places where it only goes to 30. So I double=20 > check the location of that ding in the prop =96 hmmm it=92s exactly = even=20 > with the bottom of the exhaust =96 right about where an apex seal = would=20 > come out. > =A0 > I put two new BR9EQ-14=92s in both rotors and did a quick run =96 = 2300RPM=20 > rough is the best I could get. > =A0 > Some time this week I=92ll go up and yank the exhaust so I can see the=20= > apex seals =96 my guess is I=92m missing at least one. Bummer. > =A0 > Joe Hull (getting tired of little surprises in the air). > Redmond/Seattle WA, Cozy-Mazda Rotary 71hrs > =A0 --Apple-Mail-6--322895482 Content-Transfer-Encoding: quoted-printable Content-Type: text/enriched; charset=WINDOWS-1252 Hi Joe, Right, but how many hours does this engine have on it since overhaul? It is not like you were hard on a new engine, is it? Of course I am glad you are here to tell the tale;=20 Just asking,=20 BR, Dave McC On 24, Dec , at 4:27 PM, Todd Bartrim wrote: 1F1F,4949,7D7DHi Joe; = 1F1F,4949,7D7D=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0 Glad you got back on the ground safely. =46rom the compression results I=92d say your prognosis is accurate. How was the other = rotor? 1F1F,4949,7D7DThis is another good testament to the rotaries ability to continue running under duress. = 1F1F,4949,7D7D=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0 I can understand your disappointment at yet another little surprise in the air, however it=92s important to remember that even though there are a number who have forged a path ahead of you making your installation easier, you still are blazing a trail of your own. This is an experimental hobby and each installation is unique, demanding that we are always in tune with the engine and ready for anything that fate can throw at us. = 1F1F,4949,7D7D=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0 Before each flight you gotta ask yourself =93Am I ready to be a hairy chested hero today=94 = 1F1F,4949,7D7D=A0 = 1F1F,4949,7D7DS. Todd = Bartrim = 1F1F,4949,7D7DC-FSTB 1F1F,4949,7D7DTurbo13B = RV9 = 1F1F,4949,7D7Dhttp://www3.telu= s.net/haywire/RV-9/C-FSTB.htm = 0000,0000,FFFFhttp://members.c= ox.net/rogersda/rotary/configs.htm#C-FSTB<= /excerpt> = 1F1F,4949,7D7D=A0 = 1F1F,4949,7D7D=A0 = 1F1F,4949,7D7D=A0 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Joe Hull Sent: Saturday, December 23, 2006 8:16 PM To: Rotary motors in aircraft Subject: [FlyRotary] Dead Rotor at 3000ft Times New = Roman=A0 ArialThe weather today in the Seattle area was marginal for flying =96 but a nice hole opened around my home airport (KAWO) and I was there tinkering with the plane anyway (re-torqueing the prop)=96 so up I went. I did 4 touch and goes just for a wee bit of practice and then departed the pattern toward a bigger hole that would be legal to climb through VFR. I flew about 30 miles northwest of the airport out to the edge of the Puget Sound and enjoyed just being in the air. Power setting was about 4400RPM and I was loping along at a lazy 135kts.=A0 I turned around and headed back for Arlington and decided to ramp up the power to ramming speed =96 errr I mean cruising speed. In a few minutes I was cruising along at 170kts at about 5500RPM. Then all of a sudden BAM =96 the engine stumbled and RPM=92s dropped to 2300RPM.=A0 I immediately throttled back and switched tanks while turning toward the airport. Altitude was 3200FT (about 3000AGL) and I was maybe 7 miles from the airport. The engine was running real rough and wouldn=92t give me more than 2300RPM. Even with that little bit of power I ended up entering the 45 to the pattern at about 800 above pattern altitude. It was pretty slow at the airport so I easily made a normal landing and was able to taxi back to the hanger under power. = Arial=A0 ArialAt the hangar I double checked everything I could from the cockpit =96 fuel pressure good at 36PSI, oil pressure good at 55PSI at 2300 RPM, MicroTech ECM showed =93OK=94 for the size major areas it monitors. So, I shut it down and pulled the cowl. I pulled the prop through a number of times and it seemed that there was a couple places where I should have been hearing a =93pop=94 in the exhaust but didn=92t. I also notice that there is a = nice ding in the prop that is about an inch long =96 that wasn=92t there when = I left (remember I=92m a pusher). = Arial=A0 ArialI got the engine compression gage and proceeded to take the spark plug out of the front rotor =96 top =96 BR9EQ-14. Hmmm =96 I don=92t remember there being a = casing around the electrode =96 and why is that casing sliding?=A0 Apparently = the casing around the electrode broke somewhere inside the sparkplug and into two halves long ways down the electrode. Each half slides freely up and down the electrode and even sticks out a little from the = end. = Arial=A0 ArialI put the compression gage on and it looks like I get 30-30-70 when I turn the engine over. I tried this several times and there is definitely a couple of places where it only goes to 30. So I double check the location of that ding in the prop =96 hmmm it=92s exactly even with the bottom of the exhaust = =96 right about where an apex seal would come = out. = Arial=A0 ArialI put two new BR9EQ-14=92s in both rotors and did a quick run =96 2300RPM rough is the best I could get. = Arial=A0 ArialSome time this week I=92ll go up and yank the exhaust so I can see the apex seals =96 my guess is I=92m missing at least one. Bummer. = Arial=A0 ArialJoe Hull (getting tired of little surprises in the air). ArialRedmond/Seattle WA, Cozy-Mazda Rotary 71hrs Times New = Roman=A0 = --Apple-Mail-6--322895482--