X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost05.isp.att.net ([204.127.217.105] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5039133 for flyrotary@lancaironline.net; Thu, 30 Jun 2011 23:42:58 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.105; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-108-10.mco.bellsouth.net[98.85.108.10]) by isp.att.net (frfwmhc05) with SMTP id <20110701034221H05001nk0ie>; Fri, 1 Jul 2011 03:42:22 +0000 X-Originating-IP: [98.85.108.10] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [Bulk] [FlyRotary] Re: GSL393/74028 Fuel Pump Replacement/Fuel Leak Date: Thu, 30 Jun 2011 23:42:22 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0015_01CC377F.5C62B9D0" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Acw3kFeELkCN+T1ITKO9Y6k5uXgJ+wAD9+BA X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0015_01CC377F.5C62B9D0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Scott, The GSL292 is a lot of overkill unless you are going to be making a heck of a lot of HP! It produces about 65 gallons per hour! The one Tracy sells, the GSL293, is good for about 40 gal per hour. It will be difficult to burn more than about 20 gal per with a rotary. Maybe as much as 30 gal with a turbocharged 20b. Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Scott Sent: Thursday, June 30, 2011 9:43 PM To: Rotary motors in aircraft Subject: [Bulk] [FlyRotary] Re: GSL393/74028 Fuel Pump Replacement/Fuel Leak Yeah Ed I remember the whole saginaw thing now. It was an odd thread and I could never find the exact fitting at the usual hydraulic supply places. Someone mentioned the 10mmx1.0 working so I tried them and they seemed to work. Funny thing is when I went out tonight no leak, ran the engine up to 3400rpm still no leak( well at least not fuel )... Thank you everyone for the info on your pumps. I think I am going to try the GSL392's( http://www.summitracing.com/parts/VPN-GSL392/ ) as their spec's call for the 10x1.0 so they should seal without too much problem... --- On Wed, 6/29/11, Mark Steitle wrote: From: Mark Steitle Subject: [FlyRotary] Re: GSL393/74028 Fuel Pump Replacement/Fuel Leak To: "Rotary motors in aircraft" Date: Wednesday, June 29, 2011, 10:30 PM Hi Scott, I am using an Aeeromotive fuel pump that looks like the MSD pump Ed uses, except for the MSD label. I did a google search and one popped up for $136. Mark S. On Wed, Jun 29, 2011 at 9:20 PM, Ed Anderson wrote: Hi Scott, I have used the MDS inline fuel pump (very similar to the ones Tracy sells). I have used them for over 10 years and never had them leak. They use (what used to be called "Saginaw fittings - I think because they were metric and used in Automobile fuel systems" - with the small "O" ring. In fact, it looks exactly like the summit racing part. There is always the possibility you got a defective fitting or an old "O" ring. Ed From: Scott Sent: Wednesday, June 29, 2011 9:56 PM To: Rotary motors in aircraft Subject: [FlyRotary] GSL393/74028 Fuel Pump Replacement/Fuel Leak I have inline fuel pumps from Tracy from a while back. They were from Napa and were the 74028 flavor( http://www.summitracing.com/parts/CRT-P74028/?rtype=10 seems most like them currently ) Tracy used to provide. The fixed hose barb side of course does not leak, but on the screw fitting side I have a 10mmx1.0( http://www.summitracing.com/parts/RUS-670480/ ) with an o-ring and everytime I think I have the fuel drip fixed and start the pump without the engine it doesn't leak. But, after a short engine run the drip returns. As I burned out one of the pumps already( important safety note make sure the fuel selector valve is not off while you have the pump turned on and are checking for leaks ) and will need to replace it what other inline pumps have folks been using? The 74028 flavor fuel pumps, the 10mm fits but does not seal. I did not use thread tape or other thread sealer. And no amount of tightening seems to keep it from leaking again. Thoughts on a fuel pump substitute? Way to seal that fitting to the existing 74028 pump? Thank You. -Scott http://n820wa.blogspot.com/2011/06/engine-runs.html -----Inline Attachment Follows----- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0015_01CC377F.5C62B9D0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Scott,

The GSL292 is a lot of overkill = unless you are going to be making a heck of a lot of HP!  It produces about 65 gallons per hour!  The one Tracy sells, the GSL293, is good for about 40 gal per hour.  It will be difficult to burn more than about 20 gal per with a rotary.  Maybe = as much as 30 gal with a turbocharged 20b.

 

Bill B

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Scott
Sent: Thursday, June 30, = 2011 9:43 PM
To: Rotary motors in aircraft
Subject: [Bulk] = [FlyRotary] Re: GSL393/74028 Fuel Pump Replacement/Fuel = Leak

 

Yeah Ed I remember the whole saginaw thing now.  It was an = odd thread and I could never find the exact fitting at the usual hydraulic = supply places.  Someone mentioned the 10mmx1.0 working so I tried them = and they seemed to work.  Funny thing is when I went out tonight no leak, = ran the engine up to 3400rpm still no leak( well at least not fuel )...

Thank you everyone for the info on your pumps.  I think I am = going to try the GSL392's( http://www.summitracing.com/parts/VPN-GSL392/ ) as = their spec's call for the 10x1.0 so they should seal without too much = problem...

--- On Wed, 6/29/11, Mark Steitle = <msteitle@gmail.com><= /b> wrote:


From: Mark Steitle <msteitle@gmail.com>
Subject: [FlyRotary] Re: GSL393/74028 Fuel Pump Replacement/Fuel = Leak
To: "Rotary motors in = aircraft" <flyrotary@lancaironline.net>
Date: Wednesday, June 29, 2011, 10:30 PM

Hi = Scott, 

 

I am using an Aeeromotive fuel pump that = looks like the MSD pump Ed uses, except for the MSD label.  I did a google = search and one popped up for $136.  

 

Mark = S.

On Wed, Jun 29, 2011 at 9:20 PM, Ed = Anderson <eanderson@carolina.rr.com> wrote:

Hi Scott,

 

I have used the MDS inline fuel pump (very similar = to the ones Tracy sells).  I have used them for over 10 years and never had them leak.  They use (what used to be called "Saginaw fittings - I think because = they were metric and used in Automobile fuel systems" - with the small "O" ring.  In fact, it looks exactly like the summit = racing part.   There is always the possibility you got a defective = fitting or an old  "O" ring.

 

Ed

 

Sent: Wednesday, June 29, 2011 9:56 PM

Subject: [FlyRotary] GSL393/74028 Fuel Pump Replacement/Fuel = Leak

 

I have = inline fuel pumps from Tracy from a while back.  They were from Napa and were the 74028 flavor( http://www.summitracing.com/parts/CRT-P74028/?rtype=3D10 seems most like them currently ) Tracy used to provide.

The fixed hose barb side of course does not leak, but on the screw = fitting side I have a 10mmx1.0( http://www.summitracing.com/parts/RUS-670480/ ) with an o-ring and everytime I think I have the fuel drip fixed = and start the pump without the engine it doesn't leak.  But, after a = short engine run the drip returns. 

As I burned out one of the pumps already( important safety note make = sure the fuel selector valve is not off while you have the pump turned on = and are checking for leaks ) and will need to replace it what other = inline pumps have folks been using?  The 74028 flavor fuel pumps, the = 10mm fits but does not seal.  I did not use thread tape or other = thread sealer.  And no amount of tightening seems to keep it from = leaking again.

Thoughts on a fuel pump substitute?  Way to seal that fitting = to the existing 74028 pump?

Thank You.
-Scott
http://n820wa.blogspot.com/2011/06/engine-runs.html=

 


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