X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-yw0-f52.google.com ([209.85.213.52] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5049662 for flyrotary@lancaironline.net; Tue, 12 Jul 2011 15:08:51 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.213.52; envelope-from=rwstracy@gmail.com Received: by ywo7 with SMTP id 7so2618311ywo.25 for ; Tue, 12 Jul 2011 12:08:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=subject:references:from:content-type:x-mailer:in-reply-to :message-id:date:to:content-transfer-encoding:mime-version; bh=RmYjk0klRcpvWie25DVgj0rKy0uLolJnXJqHsiKPqyo=; b=E5NBpFGbkEvYA6NcT9DVzuVgYSQvUEYFpsbsH5aIiijVUtKQma9HMXrFUkf609bWoJ ufNc1UVbNvPppkcpOu7PfHg5+bbRG/RnNmeBDBcCc42J07kl7ZwXUGFOtyPgJ3QX9DJN SDm7Xfchw4LqWT35XdA0n8hnsFu5SLom7yjqU= Received: by 10.236.156.2 with SMTP id l2mr451726yhk.169.1310497693827; Tue, 12 Jul 2011 12:08:13 -0700 (PDT) Return-Path: Received: from [10.0.1.3] (99-197-145-127.cust.wildblue.net [99.197.145.127]) by mx.google.com with ESMTPS id z28sm4624823yhn.77.2011.07.12.12.08.03 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 12 Jul 2011 12:08:12 -0700 (PDT) Subject: Re: [FlyRotary] Re: Fwd: RD-1B failure References: From: Tracy Content-Type: multipart/alternative; boundary=Apple-Mail-9--669475808 X-Mailer: iPad Mail (8F191) In-Reply-To: Message-Id: Date: Tue, 12 Jul 2011 15:07:53 -0400 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (iPad Mail 8F191) --Apple-Mail-9--669475808 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Other than the added 20+ pounds it should work fine. But I would want to k= now the exact mode and reason the flex plate failed. I have a collection o= f them that had cracks around the mounting holes at the counterweight when I= received them from the salvage yard. It is possible yours was bad from the= start. =20 20 additional pounds is a deal killer for me. Any news on the drive failure? =20 Tracy Sent from my iPad On Jul 12, 2011, at 11:24 AM, David Leonard wrote: > Tracy, > What say you about using the heavy manual transmission flywheel if I can g= et it milled and fitting? >=20 > -=20 > David Leonard >=20 > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net >=20 > On Tue, Jul 12, 2011 at 5:31 AM, Tracy wrote: > I don't think Hylomar is a sealant and would not recommend it for use on t= he RD-1x drive. Current instructions for the drive describe a recommended p= rocedure for separating the drive from adapter plate. It also helps to put a= light coat of oil and wipe off excess before assembly of the drive to adapt= er plate. >=20 > Tracy >=20 > Sent from my iPad >=20 > On Jul 12, 2011, at 1:22 AM, bktrub@aol.com wrote: >=20 >> Ask Tracy about using Hylomar as a sealant. >> =20 >> Brian Trubee >>=20 >>=20 >>=20 >> -----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 >>=20 >> 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 t= here. Will probably use a non-adhesive sealant - as long as Tracy says we d= on't need the adhesion from the RTV. >>=20 >> 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 tracking OK. >>=20 >> 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 sho= uld otherwise be an improvement for idle and pulse dampening. But maybe gyr= oscopic loads would be unacceptably high? Maybe have to move and/or replace= the starter. >>=20 >> Will try to get some pictures tomorrow. >>=20 >> --=20 >> David Leonard >>=20 >> Turbo Rotary RV-6 N4VY >> http://N4VY.RotaryRoster.net >> http://RotaryRoster.net >>=20 >> On Mon, Jul 11, 2011 at 11:51 AM, Mark Steitle wrote= : >> Al, >> =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 C= AS. I was lucky that it happened on the ground. (Ed can keep his "King of D= ead Stick Landings" plaque, thank you!)=20 >> =20 >> If I am correct, Tracy installed a 3/8" pin in my input shaft. No failur= es since. I now have approx. 200 hours on the engine/gearbox. >> =20 >> Mark >>=20 >> On Mon, Jul 11, 2011 at 10:23 AM, David Leonard wro= te: >> From: Al Gietzen >> Date: Mon, Jul 11, 2011 at 8:17 AM >> Subject: RD-1B failure >> To: Dave Leonard >>=20 >>=20 >> 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 wa= s sized for a normally aspirated 13B. After the failure on Marks 20B, I ha= ve changed the pin diameter >> =20 >> Tracy; >> =20 >> Doesn=E2=80=99t this suggest that all 20B and 13B turbo should be upgrade= d to the larger pin? When was the failure on Mark=E2=80=99s 20B? >> =20 >> Al >> ---=20 >>=20 >>=20 >>=20 >>=20 >=20 >=20 >=20 > - --Apple-Mail-9--669475808 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
Other than the added 20+ pounds it shou= ld work fine.   But I would want to know the exact mode and reason the f= lex plate failed.   I have a collection of them that had cracks around t= he mounting holes at the counterweight when I received them from the salvage= yard.  It is possible yours was bad from the start.   
=

20 additional pounds is a deal killer for me.
=
Any news on the drive failure?  

Tracy

Sent from my iPad

On Jul 12, 2011, at 11:24 AM,= David Leonard <wdleonard@gmail.co= m> wrote:

Trac= y,
What say you about using the heavy manual transmission flywheel if I c= an get it milled and fitting?

-
David Leonard

Turbo Rotary= RV-6 N4VY
http://N4VY.RotaryRoster.net
http= ://RotaryRoster.net

On Tue, Jul 12= , 2011 at 5:31 AM, Tracy <rwstracy@gmail.com>= ; wrote:
I don't think Hylomar is a sealant and would not recommend it for= use on the RD-1x drive.   Current instructions for the drive describe a= recommended procedure for separating the drive from adapter plate.  It= also helps to put a light coat of oil and wipe off excess before assembly o= f the drive to adapter plate.

Tracy

Sent from my iPad

On Jul 12, 2011, at 1:22 AM, bktrub@aol.com= wrote:

Ask  Tracy about using Hylomar as a sealant.
 
Brian Trubee



= -----Original Message-----
From: David Leonard <wdleonard@gmail.com><= br> To: Rotary motors in aircraft <flyrot= ary@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 t= o get the bell housing off the adapter plate...  I think I am done usin= g RTV there.  Will probably use a non-adhesive sealant - as long as Tra= cy says we don't need the adhesion from the RTV.

I did find another issue.  In addition to a likely fin failure inside t= he gear box, the flex plate is coming apart.  I found a piece of it in m= y cowl 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.&n= bsp; Would have to drill some holes to attach Tracy's torque plate, but it s= hould otherwise be an improvement for idle and pulse dampening.  But ma= ybe gyroscopic loads would be unacceptably high?  Maybe have to move an= d/or replace the starter.

Will try to get some pictures tomorrow.

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
htt= p://RotaryRoster.net

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 = ;the failure to a very rough running engine which was cured w= ith a mod to the EC-2 and CAS.  I was lucky that it happened on the gro= und.  (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. &nb= sp;No failures since.  I now have approx. 200 hours on the engine/gearb= ox.
 
Mark
On Mon, Jul 11, 2011 at 10:23 AM, David Leonard <= span dir=3D"ltr"><wdleonard@gmail.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@gmail.com>


Hi; Dave,
 
I=E2=80=99m very thankful to hear that= this occurred after landing.
 
I=E2=80=99ve been unable to post on th= e 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 c= andidate since it was sized for a normally aspirated 13B.   After the f= ailure 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 large= r pin? When was the failure on Mark=E2=80=99s 20B?
 
Al<= /font>
--- <= /span>







-
= --Apple-Mail-9--669475808--