Mailing List flyrotary@lancaironline.net Message #45544
From: Jeff Whaley <jwhaley@datacast.com>
Subject: RE: Oil Leaks and cotton string ... was RE: It's quiet
Date: Mon, 30 Mar 2009 05:35:04 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

Hi Steve, I was wondering where you imbedded the string … inside the bolt holes, outside the bolt holes or weaved in and out around the bolt holes in an “S” or snake pattern? I redid my oil pan with Ultra-grey but no string; however, if I ever take it all apart again I’d consider your method.

Jeff

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Friday, March 20, 2009 7:24 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: It's Quiet

 

Thanks for the tip Steve.

Mark

On Thu, Mar 19, 2009 at 9:16 PM, Steven Boese <sboese@uwyo.edu> wrote:

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’t have oil leaks in this area so far.

 

Steve Boese

RV6A, 13B NA, EC2, RD1A

 

 

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