X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-iy0-f180.google.com ([209.85.210.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.2) with ESMTPS id 5293955 for flyrotary@lancaironline.net; Tue, 06 Dec 2011 09:01:47 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.210.180; envelope-from=wdleonard@gmail.com Received: by iahk25 with SMTP id k25so2220424iah.25 for ; Tue, 06 Dec 2011 06:01:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=xQpi8hgKR9jOzoaNGKXxC38f16g5ULS8xonT8zGDsyI=; b=G23SzccxThb3j5cRkLBItHc9mPM+4GiTryrT02q4G03C8SlwoyU6lEI+3OMpwhMjaj ET7Nar1NzbacvpP4cfjfk5Jx2bMxp6inuEkmzh0CUfvOfdCS+jAOMVtZs9mitvEh0uY1 4XcCOJIB9qJ5Fn6+muBOXL+0MnB3LVx1hnUyQ= MIME-Version: 1.0 Received: by 10.42.76.66 with SMTP id d2mr14623084ick.7.1323180072245; Tue, 06 Dec 2011 06:01:12 -0800 (PST) Received: by 10.231.109.9 with HTTP; Tue, 6 Dec 2011 06:01:12 -0800 (PST) In-Reply-To: References: Date: Tue, 6 Dec 2011 06:01:12 -0800 Message-ID: Subject: Re: [FlyRotary] Re: Lube for RD1B - Full Inspection Report From: David Leonard To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=90e6ba3fd25d2e1b5704b36cde1b --90e6ba3fd25d2e1b5704b36cde1b Content-Type: text/plain; charset=ISO-8859-1 Hi Tom, That will do very nicely! ;-) Dave Leonard On Mon, Dec 5, 2011 at 12:47 PM, Thomas Giddings wrote: > Dave: I don't have a Rotary Powered Lancair, but I do have a 20B > Supercharged Questair Venture.Airframe is nearing completion. Hoping to > Race it in a couple of years. Hope The Reno Races will exist when I am > ready. > > Tom Giddings > > > On Dec 5, 2011, at 1:58 PM, David Leonard wrote: > > Hi Kelly, > > I finally got around to taking apart my gear box the rest of the way > (removing the prop shaft. It was not easy because it had frozen in there > pretty well. There is bearing around where the oil comes into the box. It > is a split bearing. The old that flows aft (away from the prop) lubes the > aft part of that bearing then flow into the main gallery and bathes the > planet gears and the rest of the gear drive. > > The part that was seized was the aft part of that bearing. When it seized > the prevented oil from flowing aft into the main gallery. > > So as far as fixing the lube for the upper planet gears, I don't think > that we have any evidence that there is a issue. The damage to my planet > gears was probably more from oil starvation causing overheating.. > > As to the reason for the bearing failure, your guess is as good as mine. > Very high duty use with continuous gyroscopic loads and possibly less than > ideal oil flow are the likely culprits. > > It is very likely that we will never know. I continue to have no second > thoughts about flying with the RD-1B, though I likely will not race my > plane again. Partly because of the gear box issue but mostly because I > don't feel comfortable going that much faster than Vne without making some > serious mods to my airframe. Wouldn't mind having a nice rotary powered > lancair to race though :-) > -- > David Leonard > > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net > > On Wed, Nov 30, 2011 at 4:58 PM, Kelly Troyer wrote: > >> Dave, >> Any further thoughts about the cause and fix for the lube problem >> you encountered with your RD1B >> at Reno beyond having a dedicated oil supply to the Redrive not shared by >> the Turbo ?............Any >> input from Tracy about the problem ?................ >> >> >> Kelly Troyer >> *"DYKE DELTA JD2" (Eventually)* >> "13B ROTARY"_ Engine >> "RWS"_RD1C/EC2/EM2 >> "MISTRAL"_Backplate/Oil Manifold >> "TURBONETICS"_TO4E50 Turbo >> >> *From:* David Leonard >> *To:* Rotary motors in aircraft >> *Sent:* Saturday, November 26, 2011 12:41 PM >> *Subject:* [FlyRotary] Plugs not for Airplanes.. >> >> Funny thing, >> I was just installing a new set of spark plugs and noticed that there is >> a set of installation pictures on the stock NGT spark plug.. the last >> picture is a big red X through a picture of an airplane. Specifically, we >> should apparently not use these spark plugs with motor gliders or >> ultralights. So I think regular experimental airplanes should be OK. :-) >> >> -- >> David Leonard >> >> Turbo Rotary RV-6 N4VY >> http://N4VY.RotaryRoster.net >> http://RotaryRoster.net >> >> >> >> >> > > > -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net --90e6ba3fd25d2e1b5704b36cde1b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Tom,

That will do very nicely!=A0=A0 ;-)

Dave Leonard
<= br>
On Mon, Dec 5, 2011 at 12:47 PM, Thomas Giddi= ngs <tom@mi= dwestaviation.net> wrote:
Dave: I = don't have a Rotary Powered Lancair, but I do have a 20B Supercharged Q= uestair Venture.Airframe is nearing completion. Hoping to Race it in a coup= le of years. Hope The Reno Races will exist when I am ready.=A0

Tom Giddings


On Dec 5, 2011, at 1:58 PM, David Leonard wrote:

Hi Kelly,

I finally got around to= taking apart my gear box the rest of the way (removing the prop shaft. =A0= It was not easy because it had frozen in there pretty well. =A0There is bea= ring around where the oil comes into the box. =A0It is a split bearing. =A0= The old that flows aft (away from the prop) lubes the aft part of that bear= ing then flow into the main gallery and =A0bathes the planet gears and the = rest of the gear drive. =A0

The part that was=A0seized=A0was the aft part of that b= earing. =A0When it seized the prevented oil from flowing aft into the main = gallery. =A0

So as far as fixing the lube for the = upper planet gears, I don't think that we have any evidence that there = is a issue. =A0The damage to my planet gears was probably more from oil=A0s= tarvation=A0causing overheating..

As to the reason for the bearing failure, your guess is= as good as mine. =A0Very high duty use with continuous gyroscopic loads an= d possibly less than ideal oil flow are the likely culprits. =A0

It is very likely that we will never know. =A0I continue to = have no second thoughts about flying with the RD-1B, though I likely will n= ot race my plane again. =A0Partly because of the gear box issue but mostly = because I don't feel=A0comfortable=A0going that much faster than Vne wi= thout making some serious mods to my airframe. =A0Wouldn't mind having = a nice rotary powered lancair to race though =A0:-)
--=A0
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net<= /a>
http://Rotary= Roster.net

On Wed, Nov 30, 2011 at 4:58 PM, Kelly Troyer <keltro@att.net> = wrote:
Dave,
=A0Any further thoughts=A0about the cause and fix for=A0the lube= problem you encountered with your RD1B
at Reno beyond having a dedicated oil supply to the Redrive not = shared by the Turbo ?............Any
input from Tracy about the problem ?...............= .
=A0
=A0
Kelly Troyer
"DYKE DELTA JD2" = (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
&quo= t;MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

From: David Leonard &l= t;wdleonard@gmail.= com>
To: Rotary mo= tors in aircraft <flyrotary@lancaironline.net>
Sent: Saturday, November 26,= 2011 12:41 PM
Subject: [= FlyRotary] Plugs not for Airplanes..

Funny thing,
I was just installing a new set of spark plugs and noticed that there = is a set of installation pictures on the stock NGT spark plug.. =A0the last= picture is a big red X through a picture of an airplane. =A0Specifically, = we should apparently not use these spark plugs with motor gliders or ultral= ights. =A0So I think regular experimental airplanes should be OK. =A0:-)

--
David Leonard

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










--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
--90e6ba3fd25d2e1b5704b36cde1b--