X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-fx0-f52.google.com ([209.85.161.52] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTPS id 5113041 for flyrotary@lancaironline.net; Sat, 03 Sep 2011 20:25:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.161.52; envelope-from=msteitle@gmail.com Received: by fxd18 with SMTP id 18so2397118fxd.25 for ; Sat, 03 Sep 2011 17:24:28 -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=z925zPqvSbLlVl2Jv/erETqfgNoCfCMTg0N5o2hLRFs=; b=n8CDkcDtJKbAzxwJ+cZpiJVE16IguAt/WsfZBihMWGwp0hxGt6bcFgcPTpYR0xj9Xh 6g392VrBWHs8As9+MS2aTXbq0eHmDw/GtoTep/ofp/301SNju9pm757Hmby5z00xcPrQ +te+zyTDS/wKOMYZo8tlm7d28UTH3zIbwGWY0= MIME-Version: 1.0 Received: by 10.223.100.71 with SMTP id x7mr746453fan.18.1315095868110; Sat, 03 Sep 2011 17:24:28 -0700 (PDT) Received: by 10.223.101.133 with HTTP; Sat, 3 Sep 2011 17:24:28 -0700 (PDT) In-Reply-To: References: Date: Sat, 3 Sep 2011 19:24:28 -0500 Message-ID: Subject: Re: [FlyRotary] Update - oil pressure. From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00151747333e10770604ac129e38 --00151747333e10770604ac129e38 Content-Type: text/plain; charset=ISO-8859-1 Chris, Thanks for providing the group with a status report. I, for one, have been wondering how you were progressing on your semi-rebuild. I was wondering what you might find to account for the low oil pressure (don't know why I didn't think of the front cover o-ring). Good find on that! It all makes sense now, damaged thrust bearings, low oil pressure, etc. One caveat; with the new thrust bearings, be sure to re-check your eccentric end-play. The weather is about to start cooling off (yes, its got to happen sooner or later), so test runs, ground runs, etc. should be easier on all the systems. Keep us posted on your progress. Mark S. On Sat, Sep 3, 2011 at 5:52 PM, Chris Barber wrote: > To recap, I had lower oil pressure than I felt comfortable with even > though the engine was running strong. I tried to check/replace the pesky > front housing o-ring while in the plane to bad resutls. > > > > Apparantly what happened is that when I tried to replace the o-ring, the > roller bearing slipped off its little lip and got a little chewed up in the > minute or two I ran the engine to see if oil pressure was up. Since > pressure was not up, I decided to remove then engine and have a closer > look. When I did I found the bearing. So, I tore down most the engine and > had a closer look. While apart I also replaced the front main bearing which > was questionable and as y'all may recall, it was bad. > > > > Upon closer inspection I determined that my front housing was the later > type that also needed the little plastic (silicone) o-ring support. No, > not really sure how I missed this as I was aware of the change but only had > the o-ring installed > > > > I have not been out at the hangar much this month (too many single women > relying on me ;-)), however, I was able to flush the parts/system, replace > the front bearing, both front roller bearings and o-ring and support ring > (everything else looks really good) got it all together...again.... added > fresh oil and filter and last night cranked her up. She fired right up > (gee, after several times doing this I am starting to get everything lined > up and timed pretty well). > > > > Low and behold the oil pressure is the highest I have ever seen on my > engine. That makes sense since I was apparently forcing oil past the > unsupported o-ring. I did not go WOT, but only to about 5000 rpm, I > think, and I was getting to the high 80's PSI on a mechanical gage. > Finally. > > > > Ok, tomorrow starts my weekend so now hopefully to button everything back > up properly and maybe actually make some progress. > > > > Chris > > Houston EFD > > Velocity N17010 > > 13b turbo with Tracy's stuff > --00151747333e10770604ac129e38 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Chris,=A0

Thanks for providing the group with a status r= eport. =A0I, for one, have been wondering how you were progressing on your = semi-rebuild. =A0I was wondering what you might find to account for the low= oil pressure (don't know why I didn't think of the front cover o-r= ing). =A0Good find on that! =A0It all makes sense now, damaged thrust beari= ngs, low oil pressure, etc. =A0One caveat; with the new thrust bearings, be= sure to re-check your eccentric end-play.=A0

The weather is about to start cooling off (yes, its got= to happen sooner or later), so test runs, ground runs, etc. should be easi= er on all the systems. =A0Keep us posted on your progress.

Mark S.

On Sat, Sep 3, 2011 at= 5:52 PM, Chris Barber <cbarber@texasattorney.net> wrote:

To recap, I had lower oil pressure than I felt comfortable with even tho= ugh the engine was running strong.=A0 I tried to check/replace the pesky fr= ont housing o-ring while in the plane to bad resutls.<= /p>

=A0

Apparantly=A0what happened is that when I tried to = replace the o-ring, the roller bearing slipped off its little lip and got a= little chewed up in the minute or two I ran the engine to see if oil press= ure was up.=A0 Since pressure was not up, I decided to remove then engine and have a closer look.=A0 When I did = I found the bearing.=A0 So, I tore down most the engine and had a closer lo= ok.=A0 While apart I also replaced the front main bearing which was=A0quest= ionable and as y'all may recall, it was bad.=A0

=A0

Upon closer inspection I determined that my front housing was the later = type that also needed the little plastic (silicone) o-ring support.= =A0 No, not really sure how I missed this as I was aware of the change but = only had the o-ring installed

=A0

I have not been out at the hangar much this month (too many single women= relying on me ;-)), however, I was able to flush the parts/system, replace= the front bearing, both front roller bearings and o-ring and support ring = (everything else looks really good) got it all together...again....=A0added fresh oil and filter and last nigh= t cranked her up.=A0 She fired right up (gee, after several times doing thi= s I am starting to get=A0everything lined up and timed pretty well).= =A0

=A0

Low and behold the oil pressure is the=A0highest I have ever seen= on my engine.=A0 That makes sense=A0since I was=A0apparently forcin= g oil past the unsupported o-ring. =A0I did not go WOT= , but only to about 5000 rpm, I think, =A0and I was getting to the high=A080's PSI on a= =A0mechanical gage.=A0 Finally.

=A0

Ok, tomorrow starts my weekend so now hopefully to button=A0everything back up properly and maybe actually make some progress.

=A0

Chris

Houston EFD

Velocity N17010

13b=A0turbo with Tracy's stuff


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