Return-Path: <13brv3@bellsouth.net> Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2910747 for flyrotary@lancaironline.net; Tue, 30 Dec 2003 10:21:55 -0500 Received: from rad ([68.155.98.142]) by imf20aec.mail.bellsouth.net (InterMail vM.5.01.06.05 201-253-122-130-105-20030824) with ESMTP id <20031230152153.OVHU1881.imf20aec.mail.bellsouth.net@rad> for ; Tue, 30 Dec 2003 10:21:53 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: aluminum hose bungs/fittings, evap core mounting Date: Tue, 30 Dec 2003 09:21:54 -0600 Message-ID: <004c01c3cee8$a8c5dda0$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004D_01C3CEB6.5E2B6DA0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_004D_01C3CEB6.5E2B6DA0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable > This is a job for a TIG machine only. Weld three tacks 120 degrees = apart > and quench the welds with a wet rag. Let everything cool down to room temp. > Weld between two of the tacks and quench again. And so on until = finished. =20 Thanks again for the tips. What if I filled the core with water prior = to welding? Maybe I could change the water periodically as it heats up? = Would the water vapor be a problem with TIG welding? At least I'd know if I reached the kit stage :-) > You are about to rigidly attach a heavy aluminum cooler to (in effect) > an engine that can ring it's own case bolts hard enough to fatigue = them to > death. The brackets are what?=20 The brackets are 6061-T6, and they could be steel if needed. Weren't = the broken case bolts a matter of harmonic vibration at certain rpms? = That's not likely to be a problem with these brackets, unless I'm really = unlucky. =20 OK, there are a number of you out there that have cores mounted to the engine. Do you have them solidly mounted, or are they on an effective cushion of some type? Can you post some pics? Has vibration been an = issue with any of your mounting methods? =20 Thanks, Rusty (shaken, not stirred) ------=_NextPart_000_004D_01C3CEB6.5E2B6DA0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

>  This is a job for a TIG machine only.  = Weld=20 three tacks 120 degrees apart
> and quench the welds with a wet = rag. Let=20 everything cool down to room temp.
> Weld between two of the tacks = and=20 quench again. And so on until finished.

 
Thanks = again for the=20 tips.  What if I filled the core with water prior to welding?  = Maybe I=20 could change the water periodically as it heats up?  Would the = water vapor=20 be a problem with TIG welding?  At least I'd know if I reached the = kit=20 stage :-)


> You are about to rigidly attach a heavy aluminum cooler to = (in=20 effect)
> an engine that can ring it's own case bolts hard enough = to=20 fatigue them to
> death. The brackets are what?

The brackets are 6061-T6, = and they=20 could be steel if needed.  Weren't the broken case bolts a = matter of=20 harmonic vibration at certain rpms?  That's not likely to be a = problem with=20 these brackets, unless I'm really unlucky. 

OK, there are a number of = you out there=20 that have cores mounted to the engine.  Do you have them solidly = mounted,=20 or are they on an effective cushion of some type?  Can you = post some=20 pics?  Has vibration been an issue with any of your mounting = methods? =20  

Thanks,
Rusty (shaken, not=20 stirred)
 ------=_NextPart_000_004D_01C3CEB6.5E2B6DA0--