X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-fx0-f42.google.com ([209.85.161.42] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5052245 for flyrotary@lancaironline.net; Thu, 14 Jul 2011 21:25:08 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.161.42; envelope-from=msteitle@gmail.com Received: by fxe23 with SMTP id 23so1546537fxe.1 for ; Thu, 14 Jul 2011 18:24:33 -0700 (PDT) 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=vxrNuf2Am7N8Y8+rZPizL9axi9eq3oHI1QDHZBBdJHM=; b=pKHuWKnV/dbkp0zPUpXj36idd16uZJcToXy5nPYoctYa+NSAXY4aZuz8NKh9ZIldHv H4CpCluWwqxysyzJvAmqrlXKI3l7zHO2WSyvZqplnsKv7HgT7SpFl6FIcfJrOCATUVCA hgyPr/QlrZ64lATRiS5Oh2/X8B8tgJ1tRxG6g= MIME-Version: 1.0 Received: by 10.223.75.139 with SMTP id y11mr4565555faj.133.1310693073674; Thu, 14 Jul 2011 18:24:33 -0700 (PDT) Received: by 10.223.73.208 with HTTP; Thu, 14 Jul 2011 18:24:33 -0700 (PDT) In-Reply-To: References: Date: Thu, 14 Jul 2011 20:24:33 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Oil Pressure Again From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015174c406610e40d04a8118369 --0015174c406610e40d04a8118369 Content-Type: text/plain; charset=ISO-8859-1 Chris, I have done this myself, only with the rear bearing/gear. Before removing the bearing/gear, position the front rotor so that the apex seal is pointed straight down. That will help keep the eccentric shaft aligned. The front rotor is held by the front eccentric lobe, so it can't go anywhere. If you don't turn the eccentric or the rotor, it should go right back together. When putting the gear/bearing carrier back in the front iron, make sure the teeth mesh properly (don't force it). My guess is the pressure regulator is bad, or possibly the oil pump itself. You can check the pump while you have the front cover off. Lynn, please step in here if this breaks some rotary cardinal rule. Mark S. On Thu, Jul 14, 2011 at 7:41 PM, Kelly Troyer wrote: > Chris, > > Certainly hope the front bearing is not the culprit but check with > Lynn Hanover about > the possibilty of pulling front stationary gear without disassembling > engine...........I think > it is possible as long as engine is not rotated before > reassembly........... > > Kelly Troyer > *"DYKE DELTA JD2" (Eventually)* > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold > "TURBONETICS"_TO4E50 Turbo > > *From:* Chris Barber > *To:* Rotary motors in aircraft > *Sent:* Thursday, July 14, 2011 6:51 PM > *Subject:* [FlyRotary] Re: Oil Pressure Again > > I am running 40 weight. I am letting the oil warm up but > hesitate running too long since the pressure is low. > > Chris > *From:* Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf > of Chris Barber [cbarber@texasattorney.net] > *Sent:* Thursday, July 14, 2011 6:46 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Oil Pressure Again > > I hesitate asking about this again, but I am too close to possibly > flying to drop the ball too much now. I have a drop in oil pressure again. > It has dropped from the high 60's or so to between 20 psi to 40 psi (20 to > 30 at lower RPM and only up to around 40+ as I increase power). > > My first thought was that it was the front o-ring and silicone ring in the > front cover. So, I pulled the front pan and replaced it. I also was able to > check the front pressure port and the oil pump chain/key/washer etc and all > was good. > > I am about to have to pull the engine to check the bottom of the engine for > the oil pick up and rear port (after checking the hoses, but I would > thinking a blockage, depending on where it is, would increase pressure). > One of the disadvantages of the Conversion Concepts mount is that I pretty > much have to pull the engine to check the bottom end. > > My question is, other than the mentioned items, what else could cause this > sort of drop. I have hooked up a mechanical pressure gage (instead of > the RWS EM2). My concern is that it may be the front bearing as it was > the only part I recall being closer to being out of spec. I hate the idea > of having to tear down the engine again to replace this part especiallysince the engine is running all but perfectly and I was doing squawks > preparing for my DAR inspection before this issue crept up. > > Also, even though I can't think of a way, is there any way to replace the > front stationary gear/bearing without cracking the engine...just had to > ask as I am not really liking the idea of cracking open the engine again, > even though I am getting a bit too good at it....but apparently not well > enough to make it actually work right. > > As opposed to mucking around with red hearings and wild goose chases, I > figured I would just ask again. And yes, I have been reviewing the archivesalready. > > > TIA > > Thanks > > Chris Barber > Houston. > > > --0015174c406610e40d04a8118369 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Chris,=A0

I have done this myself, only with the rear be= aring/gear. =A0Before removing the bearing/gear, position the front rotor s= o that the apex seal is pointed straight down. =A0That will help keep the e= ccentric shaft aligned. =A0The front rotor is held by the front eccentric l= obe, so it can't go anywhere. =A0If you don't turn the eccentric or= the rotor, it should go right back together. =A0When putting the gear/bear= ing carrier back in the front iron, make sure the teeth mesh properly (don&= #39;t force it). =A0=A0

My guess is the pressure regulator is bad, or possibly = the oil pump itself. =A0You can check the pump while you have the front cov= er off. =A0

Lynn, please step in here if this brea= ks some rotary cardinal rule.

Mark S. =A0

On Thu, J= ul 14, 2011 at 7:41 PM, Kelly Troyer <keltro@att.net> wrote:
Chris,
=A0
=A0=A0=A0 Certainly hope the front bearing is not the= culprit but check with Lynn Hanover about
the possibilty of pulling front stationary gear without disassem= bling engine...........I think
it is possible as long as engine is not rotated before reassembl= y...........
=A0
Kelly Troyer
"DYKE DELTA JD2" = (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
&quo= t;MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

From: Chris Barber <= ;cbarber@tex= asattorney.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thursday, July 14, 201= 1 6:51 PM
Subject: [FlyRo= tary] Re: Oil Pressure Again
I am running 40 weight.=A0 I am letting the oil warm up but hesitate= =A0running too long since the pressure is low.
=A0
Chris
From: Rotary motors in aircraft [flyrotary@lancaironline.net] on beha= lf of Chris Barber [cbarber@texasattorney.net]
Sent: Thursday, July 14, 2011 6:46 PM
To: Rotary motors in= aircraft
Subject: [FlyRotary] Oil Pressure Again

<= /div>
I hesitate asking about this again, but I am too close to possibly fly= ing to drop the ball too much now.=A0 I have a drop in oil pressure again.= =A0 It has dropped from the high=A060's or so to between 20 psi to 40 ps= i (20 to 30 at lower RPM and only up to around 40+ as I increase power).
=A0
My first thought was that it was the front o-ring and silicone ring in= the front cover. So, I pulled the front pan and replaced it.=A0 I also was= able to check the front pressure port and the oil pump chain/key/washer et= c and all was good.
=A0
I am about to have to pull the engine to check the bottom of the engin= e for the oil pick up and rear port (after checking the hoses, but I=A0woul= d=A0thinking a blockage, de= pending on where it is, would increase pressure).=A0 One of the disadvantag= es of the Conversion Concepts mount is that I pretty much have to pull the = engine to check the bottom end.
=A0
My question is, other than the mentioned items, what else could cause = this sort of drop.=A0 I have hooked up a=A0mechanical pressure gage (instead of the=A0RWS EM2).=A0 My concer= n is that it may be the front bearing as it was the only part I recall bein= g closer to being out of spec.=A0 I hate the idea of having to tear down th= e engine again to replace this part=A0especially since the engine is running all but perfectly and I w= as doing squawks preparing for my DAR inspection before this issue=A0crept<= a rel=3D"nofollow"> up.
=A0
Also, even though I can't think of a way, is there any way to repl= ace the front=A0stationary = gear/bearing without cracking the engine...just had to ask as I am not real= ly liking the idea of cracking open the engine again, even though I am gett= ing a bit too good at it....but=A0apparently not well enough to make it actually work right.
=A0
As=A0opposed to muckin= g around with red hearings and wild goose chases, I figured I would just as= k again.=A0 And yes, I have been reviewing the=A0archives already.
=A0
TIA
=A0
Thanks
=A0
Chris Barber
Houston.


=

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