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 5.4.0) with ESMTP id 5048940 for flyrotary@lancaironline.net; Tue, 12 Jul 2011 01:23:42 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.78.142; envelope-from=Bktrub@aol.com Received: from imo-da04.mx.aol.com (imo-da04.mx.aol.com [205.188.169.202]) by imr-ma06.mx.aol.com (8.14.1/8.14.1) with ESMTP id p6C5N06v005961 for ; Tue, 12 Jul 2011 01:23:00 -0400 Received: from Bktrub@aol.com by imo-da04.mx.aol.com (mail_out_v42.9.) id q.1060.9c742cf (43962) for ; Tue, 12 Jul 2011 01:22:55 -0400 (EDT) Received: from smtprly-me01.mx.aol.com (smtprly-me01.mx.aol.com [64.12.95.102]) by cia-dd02.mx.aol.com (v129.10) with ESMTP id MAILCIADD023-b2924e1bda2a131; Tue, 12 Jul 2011 01:22:55 -0400 Received: from webmail-m001 (webmail-m001.sim.aol.com [64.12.101.83]) by smtprly-me01.mx.aol.com (v129.10) with ESMTP id MAILSMTPRLYME012-b2924e1bda2a131; Tue, 12 Jul 2011 01:22:50 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: Fwd: RD-1B failure Date: Tue, 12 Jul 2011 01:22:50 -0400 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_8CE0E6AE0F0AB90_1CB8_FA67_webmail-m001.sysops.aol.com" X-Mailer: AOL Webmail 33953-STANDARD Received: from 69.84.254.253 by webmail-m001.sysops.aol.com (64.12.101.83) with HTTP (WebMailUI); Tue, 12 Jul 2011 01:22:50 -0400 Message-Id: <8CE0E6AE0EBE8CC-1CB8-6E3B@webmail-m001.sysops.aol.com> X-Spam-Flag:NO X-AOL-SENDER: Bktrub@aol.com ----------MB_8CE0E6AE0F0AB90_1CB8_FA67_webmail-m001.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Ask Tracy about using Hylomar as a sealant.=20 Brian Trubee -----Original Message----- From: David Leonard To: Rotary motors in aircraft Sent: Mon, Jul 11, 2011 10:15 pm Subject: [FlyRotary] Re: Fwd: RD-1B failure I tried to get into the gear box today, but ran into an impasse trying to= get the bell housing off the adapter plate... I think I am done using RT= V there. Will probably use a non-adhesive sealant - as long as Tracy says= we don't need the adhesion from the RTV. I did find another issue. In addition to a likely fin failure inside the= gear box, the flex plate is coming apart. I found a piece of it in my co= wl and it is tearing in several places. Still seems to be tracking OK. You know, I wouldn't mind the weight penalty of using the manual flywheel.= Would have to drill some holes to attach Tracy's torque plate, but it sh= ould otherwise be an improvement for idle and pulse dampening. But maybe= gyroscopic loads would be unacceptably high? Maybe have to move and/or= replace the starter. Will try to get some pictures tomorrow. --=20 David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net On Mon, Jul 11, 2011 at 11:51 AM, Mark Steitle wrote: Al,=20 =20 My gearbox failure was approx. 1-1/2 years ago. I attributed the failure= to a very rough running engine which was cured with a mod to the EC-2 and= CAS. I was lucky that it happened on the ground. (Ed can keep his "King= of Dead Stick Landings" plaque, thank you!) =20 =20 If I am correct, Tracy installed a 3/8" pin in my input shaft. No failure= s since. I now have approx. 200 hours on the engine/gearbox. =20 Mark On Mon, Jul 11, 2011 at 10:23 AM, David Leonard wrot= e: From: Al Gietzen Date: Mon, Jul 11, 2011 at 8:17 AM Subject: RD-1B failure To: Dave Leonard Hi; Dave, =20 I=E2=80=99m very thankful to hear that this occurred after landing. =20 I=E2=80=99ve been unable to post on the rotary engine list for months due= to blocking by Cox. Perhaps you=E2=80=99d post this message on my behalf= : =20 ---The shear pin on the sun gear is the most likely candidate since it was= sized for a normally aspirated 13B. After the failure on Marks 20B, I= have changed the pin diameter =20 Tracy; =20 Doesn=E2=80=99t this suggest that all 20B and 13B turbo should be upgraded= to the larger pin? When was the failure on Mark=E2=80=99s 20B? =20 Al ---=20 ----------MB_8CE0E6AE0F0AB90_1CB8_FA67_webmail-m001.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"
Ask  Tracy about using Hylomar as a sealant.
 
Brian Trubee



-----Original Message-----
From: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Mon, Jul 11, 2011 10:15 pm
Subject: [FlyRotary] Re: Fwd: RD-1B failure

I tried to get= into the gear box today, but ran into an impasse trying to get the bell= housing off the adapter plate...  I think I am done using RTV there.=   Will probably use a non-adhesive sealant - as long as Tracy says we= don't need the adhesion from the RTV.

I did find another issue.  In addition to a likely fin failure inside= the gear box, the flex plate is coming apart.  I found a piece of it= in my cowl and it is tearing in several places. Still seems to be trackin= g OK.

You know, I wouldn't mind the weight penalty of using the manual flywheel.=   Would have to drill some holes to attach Tracy's torque plate, but= it should otherwise be an improvement for idle and pulse dampening. = But maybe gyroscopic loads would be unacceptably high?  Maybe have= to move and/or replace the starter.

Will try to get some pictures tomorrow.

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.Rota= ryRoster.net
http://RotaryRoster.n= et

On Mon, Jul 11, 2011 at 11:51 AM, Mark Steitle <msteitle@gmail.com= > wrote:
Al,
 
My gearbox failure was approx. 1-1/2 years ago.  I attributed&nb= sp;the failure to a very rough running engine which was cured&nb= sp;with a mod to the EC-2 and CAS.  I was lucky that it happened on= the ground.  (Ed can keep his "King of Dead Stick Landings" plaque,= thank you!) 
 
If I am correct, Tracy installed a 3/8" pin in my input shaft. &= nbsp;No failures since.  I now have approx. 200 hours on the engine/g= earbox.
 
Mark
On Mon, Jul 11, 2011 at 10:23 AM, David Leonard= <wdleonard@gmai= l.com> wrote:
From: Al Gietzen= <ALVentures@cox.= net>
Date: Mon, Jul 11, 2011 at 8:17 AM
Subject: RD-1B failure
To: Dave Leonard <wdleonard@gmai= l.com>


Hi; Dave,
 
I=E2=80=99m very thankful to hear that th= is occurred after landing.
 
I=E2=80=99ve been unable to post on the= rotary engine list for months due to blocking by Cox.  Perhaps you= =E2=80=99d post this message on my behalf:
 
---The shear pin on the sun gear is the most likely= candidate since it was sized for a normally aspirated 13B.   After= the failure on Marks 20B, I have changed the pin diameter
 
Tracy;
 
Doesn=E2=80=99t= this suggest that all 20B and 13B turbo should be upgraded to the larger= pin? When was the failure on Mark=E2=80=99s 20B?
 
Al
--- 




----------MB_8CE0E6AE0F0AB90_1CB8_FA67_webmail-m001.sysops.aol.com--