X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [65.54.250.79] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 982986 for flyrotary@lancaironline.net; Mon, 13 Feb 2006 11:56:00 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.54.250.79; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 13 Feb 2006 08:55:11 -0800 Message-ID: Received: from 4.171.129.62 by BAY115-DAV7.phx.gbl with DAV; Mon, 13 Feb 2006 16:55:11 +0000 X-Originating-IP: [4.171.129.62] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Another rotary failure Date: Mon, 13 Feb 2006 11:55:08 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0102_01C63094.565FA680" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Mon, 13 Feb 2006 11:55:08 -0500 X-OriginalArrivalTime: 13 Feb 2006 16:55:11.0725 (UTC) FILETIME=[40E421D0:01C630BE] This is a multi-part message in MIME format. ------=_NextPart_000_0102_01C63094.565FA680 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Same apparent problem but not the second without explanation. The first = one was clearly due to ingestion of the actuating pin in the modified = barrel valve (furnished by Pineapple Racing I think). The pin should = have been removed since it serves no purpose in our application.=20 We'll be very interested in the results of teardown on second one. Tracy Subject: [FlyRotary] Re: Another rotary failure Wow Chuck, Very sorry to hear. I certainly know what you are going = through. I think it is even more worrisome that it just happened out of = the blue like that. It was more justifiable for me because of coolant = issues. But for you to have the same problem twice, without a known = cause - and not even running a turbo. That troubles me.=20 I wish I was in a position to offer some help - other than recent = experience in tearing apart a rotary... Dave Leonard =20 On 2/11/06, Chuck Dunlap = > wrote:=20 Sorry I didn't make to Bill Eslick's for the Rotorfest, I missed by = about one hour. About 30 miles north of San Angelo TX the RPM suddenly = dropped and I could not restore it with any of my emergency procedures. = GPS told me nearest airport was Robert Lee about 15 miles away. I headed = there and landed without incident.=20 Turning the prop by hand shows almost zero compression in one rotor, = indicating bad/broken apex seals, quite similar to my engine-out = experience 2 1/2 years ago which caused a forced landing near the Grand = Canyon. This time the vibration was not quite as bad, and the RPM = dropped to around 4300 which was still not enough to maintain altitude. = I called my friend with a Glasair and he cam got me and took me home. I = will have to find some time to build another motor and drive 12 hours = back there and swap motors. Or I might drive there, remove the wings and = trailer it back, have not decided yet.=20 My good friend/mentor/flight instructor is trying to talk me into = going back to a Lycosaurus, and I have to think of some good reasons not = to. Until I get the motor back and torn apart, I wont know what caused = the failure, but I will post anything that I find.=20 Regards Chuck Dunlap RV-6 13B 535 hours --=20 Dave Leonard Turbo Rotary RV-6 N4VY = http://members.aol.com/_ht_a/rotaryroster/index.html = http://members.aol.com/_ht_a/vp4skydoc/index.html ------=_NextPart_000_0102_01C63094.565FA680 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Same apparent problem but not the second without explanation.  = The=20 first one was clearly due to ingestion of the actuating pin in the = modified=20 barrel valve (furnished by Pineapple Racing I think).  The pin = should have=20 been removed since it serves no purpose in our application. 
 
We'll be very interested in the results of teardown on second=20 one.
 
Tracy
 
 
Subject: [FlyRotary] Re: Another rotary failure

Wow Chuck, Very sorry to hear.  I certainly know what you = are going=20 through.  I think it is even more worrisome that it just happened = out of=20 the blue like that.  It was more justifiable for me because of = coolant=20 issues.  But for you to have the same problem twice, without a = known=20 cause - and not even running a turbo.  That troubles me.
 
I wish I was in a position to offer some help - other than recent = experience in tearing apart a rotary...
 
Dave Leonard

 
On 2/11/06, Chuck=20 Dunlap <crayd@cableone.net> = wrote:=20
Sorry I didn't make to Bill = Eslick's for=20 the Rotorfest, I missed by about one hour. About 30 miles north of = San=20 Angelo TX the RPM suddenly dropped and I could not restore it with = any of my=20 emergency procedures. GPS told me nearest airport was Robert Lee = about 15=20 miles away. I headed there and landed without incident. =
Turning the prop by hand = shows almost=20 zero compression in one rotor, indicating bad/broken apex seals, = quite=20 similar to my engine-out experience 2 1/2 years ago which caused a = forced=20 landing near the Grand Canyon. This time the vibration was not quite = as bad,=20 and the RPM dropped to around 4300 which was still not enough to = maintain=20 altitude.  I called my friend with a Glasair and he cam got me = and took=20 me home. I will have to find some time to build another motor and = drive 12=20 hours back there and swap motors. Or I might drive there, remove the = wings=20 and trailer it back, have not decided yet.
My good friend/mentor/flight = instructor=20 is trying to talk me into going back to a Lycosaurus, and I have to = think of=20 some good reasons not to. Until I get the motor back and torn = apart, I=20 wont know what caused the failure, but I will post anything that I = find.=20
 
Regards
Chuck = Dunlap
RV-6 13B 535=20 hours



--=20
Dave Leonard
Turbo Rotary RV-6 N4VY
http://memb= ers.aol.com/_ht_a/rotaryroster/index.html
http://members= aol.com/_ht_a/vp4skydoc/index.html=20
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