X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from EXHUB003-4.exch003intermedia.net ([207.5.74.111] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTPS id 3553791 for flyrotary@lancaironline.net; Fri, 20 Mar 2009 11:00:52 -0400 Received-SPF: none receiver=logan.com; client-ip=207.5.74.111; envelope-from=jwhaley@datacast.com Received: from EXVMBX003-5.exch003intermedia.net ([207.5.74.45]) by EXHUB003-4.exch003intermedia.net ([207.5.74.111]) with mapi; Fri, 20 Mar 2009 08:00:14 -0700 From: Jeff Whaley To: Rotary motors in aircraft Date: Fri, 20 Mar 2009 08:00:13 -0700 Subject: RE: [FlyRotary] Gasket [FlyRotary] Re: It's Quiet Thread-Topic: [FlyRotary] Gasket [FlyRotary] Re: It's Quiet Thread-Index: Acmpai8BZS6teWrVT0KquqKexT2cwAAAdoKg Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_C03ABB0A7362B84BB53D544B3C305E0ED1498DCA20EXVMBX0035exc_" MIME-Version: 1.0 --_000_C03ABB0A7362B84BB53D544B3C305E0ED1498DCA20EXVMBX0035exc_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Thanks Ed, yes I have a tail-dragger and situation is as you stated ... wil= l reconsider the gasket. I have a new tube of Ultra-Grey. Any comments on the aluminum Front Cover thread repair? Jeff From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Beh= alf Of Ed Anderson Sent: Friday, March 20, 2009 10:38 AM To: Rotary motors in aircraft Subject: [FlyRotary] Gasket [FlyRotary] Re: It's Quiet Hi Jeff, If your aircraft is perhaps a taildragger (I can't 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. I have a "Plugs U" installation with a sump be= low 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 would eventua= lly become saturated with the oil and after a time began a slow dripping le= ak. Very slow, but a little oil on the bottom of the cowling goes a long w= ays. 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 drippin= g oil. Don't know if this could apply to your set up but thought I would m= ention 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] On Beh= alf 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. S= ince I've already paid for the gasket (can't return it) I'll use it if not = too thick. Originally I put the pan on with bolts just snug, allowed silicone to set f= or 24 hours then tightened them. My oil pan is modified - with the indentat= ion for inner mounting bolt removed and an external cover panel allowing fo= r more oil. It is leaking just behind the two large (10mm?) mounting bolts = and not at the rear edge ... maybe there is a slight warp or imperfection f= rom the modification. Jeff From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Beh= alf 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 bloc= k 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 ligh= t cotton string in the Ultra-Grey on both sides of the mounting plate. Thi= s allowed me to tighten the oil pan bolts without squeezing out all the sea= lant from the joint. This would be somewhat similar to the use of a silk t= hread between the case halves on a conventional aircraft engine. I realiz= e 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 __________ 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 --_000_C03ABB0A7362B84BB53D544B3C305E0ED1498DCA20EXVMBX0035exc_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Thanks Ed, yes I have a tail-dragger and situation is as you= stated … will reconsider the gasket.

I have a new tube of Ultra-Grey.

Any comments on the aluminum Front Cover thread repair?=

Jeff

 

From: Rotary motors= in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anders= on
Sent: Friday, March 20, 2009 10:38 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Gasket [FlyRotary] Re: It's Quiet

 

Hi Jeff,

 

If your aircraft is perhaps a taildragger (I can’t 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.  I have a “Plugs U” installation with a sump below the block, so the oil flows over the pan/blo= ck interface before flowing into my sump.  When I used a gasket, I found = that the gasket would 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 brand I believe) make for oil tolerance and that solve my problem= of the dripping oil.  Don’t know if this could apply to your set up= but thought I would mention it.

 

Ed

From: Rotary motors= in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Whal= ey
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’ve already paid for the gasket (can’t return i= t) I’ll use it 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?) moun= ting bolts and not at the rear edge … maybe there is a slight warp or imperfection from the modification.

Jeff

 

From: Rotary motors= in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Steven Bo= ese
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, af= ter cleaning all the mating surfaces several times with brake cleaner, I embedd= ed 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

 



__________ 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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