X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qw-out-2122.google.com ([74.125.92.24] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3553855 for flyrotary@lancaironline.net; Fri, 20 Mar 2009 11:47:04 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.92.24; envelope-from=rwstracy@gmail.com Received: by qw-out-2122.google.com with SMTP id 3so573040qwe.25 for ; Fri, 20 Mar 2009 08:46:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type; bh=cSurJafO0noshnB5GYw/Tem4o/boeWnSJlfTJxLPLoY=; b=LLnWRqz3H1fejuuIUfg/2+Fqv7AfFMEnZ69VI0U8lq5L2RroWOmCVK/04fxk3S9Pk+ jn8HEl+ilrBrg3Nn+znoPE+UJCkzjYNmU4Ustz2QCLKTa8uMyc3Eq9rI/pkDoRExNvbr Tk3L7N936Fl9/K2KUdGQRykEsT7zg9NTYBx74= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=ciADqoFSMdEPzMz++Clo1ZFgpRE9FLIW4efkC2cqCKBCWY+YRdbt6z/J+NeVaagRf+ RJuz5208/0oeeVOMWdMY+VcZEWU4sumu59Rv7R2X3s3isxoTItTJ5W7ibeS1Ax3pHg25 o/rWJFaRgC0jcO7KGbAd4JHBHcpmL7YP52fvk= MIME-Version: 1.0 Sender: rwstracy@gmail.com Received: by 10.224.67.130 with SMTP id r2mr382025qai.284.1237563988543; Fri, 20 Mar 2009 08:46:28 -0700 (PDT) In-Reply-To: References: Date: Fri, 20 Mar 2009 11:46:28 -0400 X-Google-Sender-Auth: 91ec0b20ad29f1b9 Message-ID: <1b4b137c0903200846o5af7e159m468eb06de7e82584@mail.gmail.com> Subject: Re: [FlyRotary] Gasket [FlyRotary] Re: It's Quiet From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015175cb888ec884204658ed136 --0015175cb888ec884204658ed136 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Just FWIW, Mazda sells the gaskets but they don't install them in their own factory engines. I use Ultra Gray sealant (same as Mazda does) and not ha= d a problem so far. Tracy On Fri, Mar 20, 2009 at 10:38 AM, Ed Anderson wr= ote: > Hi Jeff, > > > > If your aircraft is perhaps a taildragger (I can=92t recall) and sits so = that > the oil at the back of the pan is over the pan/block seal, you may want t= o > reconsider using a gasket. I have a =93Plugs U=94 installation with a su= mp > below the block, so the oil flows over the pan/block interface before > flowing into my sump. When I used a gasket, I found that the gasket woul= d > eventually become saturated with the oil and after a time began a slow > dripping leak. Very slow, but a little oil on the bottom of the cowling > goes a long ways. > > > > I stopped using the gasket and use the Grey Silicon sealant (Permatex bra= nd > I believe) make for oil tolerance and that solve my problem of the drippi= ng > oil. Don=92t know if this could apply to your set up but thought I would > mention it. > > > > Ed > > Ed Anderson > > Rv-6A N494BW Rotary Powered > > Matthews, NC > > eanderson@carolina.rr.com > > http://www.andersonee.com > > http://www.dmack.net/mazda/index.html > > http://www.flyrotary.com/ > > http://members.cox.net/rogersda/rotary/configs.htm#N494BW > > http://www.rotaryaviation.com/Rotorhead%20Truth.htm > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Jeff Whaley > *Sent:* Friday, March 20, 2009 8:09 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: It's Quiet > > > > Steve, the string idea is a good tip. > > Sounds like no one is voting for the gasket, favoring Ultra-Grey sealant. > Since I=92ve already paid for the gasket (can=92t return it) I=92ll use i= t if not > too thick. > > > > Originally I put the pan on with bolts just snug, allowed silicone to set > for 24 hours then tightened them. My oil pan is modified - with the > indentation for inner mounting bolt removed and an external cover panel > allowing for more oil. It is leaking just behind the two large (10mm?) > mounting bolts and not at the rear edge =85 maybe there is a slight warp = or > imperfection from the modification. > > Jeff > > > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Steven Boese > *Sent:* Thursday, March 19, 2009 10:17 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: It's Quiet > > > > All, > > > > For what it is worth, I had a slow oil leak between the oil pan or the > block and the mounting plate the first time I assembled it in spite of > cleaning the surfaces well. The second time I put things together, after > cleaning all the mating surfaces several times with brake cleaner, I > embedded a light cotton string in the Ultra-Grey on both sides of the > mounting plate. This allowed me to tighten the oil pan bolts without > squeezing out all the sealant from the joint. This would be somewhat > similar to the use of a silk thread between the case halves on a > conventional aircraft engine. I realize that this is a limited data set > (one instance) but at least I don=92t have oil leaks in this area so far. > > > > Steve Boese > > RV6A, 13B NA, EC2, RD1A > > > > > > __________ Information from ESET NOD32 Antivirus, version of virus > signature database 3267 (20080714) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > --0015175cb888ec884204658ed136 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Just FWIW, Mazda sells the gaskets but they don't install them in their= own factory engines.=A0 I use Ultra Gray sealant (same as Mazda does)=A0 a= nd not had a problem so far.

Tracy

On Fri, Mar 20, 2009 at 10:38 AM, Ed Anderson <eanderson@carolina.rr.com> wrote:

Hi Jeff,

=A0

If your aircraft is perhaps a tail= dragger (I can=92t recall) and sits so that the oil at the back of the pan is over the pan/block seal, you may want to reconsider using a gasket.=A0 I have a = =93Plugs U=94 installation with a sump below the block, so the oil flows over the pan/block interface before flowing into my sump.=A0 When I used a gasket, I found that the gasket would eventually become saturated with the oil and af= ter a time began a slow dripping leak.=A0 Very slow, but a little oil on the bottom of the cowling goes a long ways.=A0

=A0

I stopped using the gasket and use= the Grey Silicon sealant (Permatex brand I believe) make for oil tolerance and = that solve my problem of the dripping oil.=A0 Don=92t know if this could apply to your set up but thought I would mention it.

=A0

Ed

From: Ro= tary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Jeff Whaley
Sent: Friday, March 20, 20= 09 8:09 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: I= t's Quiet

=A0

Steve, the stri= ng idea is a good tip.

Sounds like no = one is voting for the gasket, favoring Ultra-Grey sealant. Since I=92ve already paid for the gasket (can=92t return it) I=92ll use it if not too thick.

=A0

Originally I pu= t the pan on with bolts just snug, allowed silicone to set for 24 hours then tightened them. My oil pan is modified - with the indentation for inner mounting bolt removed and an external cover panel allowing for more oil. It= is leaking just behind the two large (10mm?) mounting bolts and not at the rea= r edge =85 maybe there is a slight warp or imperfection from the modification.

Jeff

=A0

From: Ro= tary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Steven Boese
Sent: Thursday, March 19, = 2009 10:17 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: I= t's Quiet

=A0

All,

=A0

For what it is worth, I had a slow oil leak between the oil pan or the block and the mount= ing plate the first time I assembled it in spite of cleaning the surfaces well.=A0 The second time I put things together, after cleaning all the mating surfaces several times with brake cleaner, I embedded a light cotton string in the Ultra-Grey on both sides of the mounting plate.=A0 This allowed me to tighten the oil pan bolts without squeezing out all the seala= nt from the joint.=A0 This would be somewhat similar to the use of a silk thread between the case halves on a conventional =A0aircraft engine.=A0 I realize that this is a limited data set (one instance) but at least I don=92t have oil leaks in this area so far.

=A0

Steve Boese

RV6A, 13B NA, E= C2, RD1A

=A0



__________ Information from ESET NOD32 Antivirus, version of virus signatur= e database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com


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