X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao10.cox.net ([68.230.241.29] verified) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 612745 for flyrotary@lancaironline.net; Sat, 23 Jul 2005 15:14:16 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.29; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao10.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050723191319.NZGH1860.fed1rmmtao10.cox.net@BigAl> for ; Sat, 23 Jul 2005 15:13:19 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: fiberglass runners Date: Sat, 23 Jul 2005 12:13:28 -0700 Message-ID: <000001c58fba$9b634370$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C58F7F.EF06DC70" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C58F7F.EF06DC70 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Chris; =20 I've made all kinds of FG special parts for my project, and considered = doing the intake manifold. It's just a question of figuring how to make the = mold (and get the part off), mating to flanges; etc. Given in-cowl temps up = to possibly about 200F, you'd want an epoxy good to 250F+. My = configuration for the 20B was a bit complex, and I wanted it to carry the fairly heavy 3-barrel TWM throttle body so I decided to go to aluminum. I had a very skilled welder, and still it was a considerable challenge for him.=20 =20 No reason why composite won't work if done right. =20 Al -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Christopher Barber Sent: Friday, July 22, 2005 10:12 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: fiberglass runners =20 I have seen some postings over the few years I have been on this list regarding making fiberglass runners for an intake manifold, however, I = am unsure if anyone has actually made any and if not why not. If I = understand it correctly they are paths for air and would not require any = "structural strength, just need to be resistant to the heat in the area they are = placed and direct the air properly. If this is true, and please correct me = where I am wrong, why would fiberglass runners not work. Is it that there are = not that many composite guys on the list (just Mr. Slade and myself?) and as = a result are resistant or not skilled in working with fiberglass. Seems = they would be light, easy to form and get into tighter places and do the job well. However, I am not an engineer and am concerned about obvious = stuff I could easily miss. I am not skilled with any welding (even though my = build partner, David Staten, just bought a welder for us to learn with) so = like the idea of having alternatives. =20 I am in the final stages of my Velocity airframe construction (now in = the micro, sand repeat stage) and feel VERY confident in my abilities with fiberglass. What obvious stuff am I missing regarding using high temp = epoxy to make well formed runners out of fiberglass. Y'alls input/insight is greatly appreciated. TIA. =20 All the best, =20 Chris Barber Houston, GSOT LoneStarVelocity.com ------=_NextPart_000_0001_01C58F7F.EF06DC70 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Chris;

I’ve made all kinds of FG = special parts for my project, and considered doing the intake manifold. = It’s just a question of figuring how to make the mold (and get the part off), = mating to flanges; etc. Given in-cowl temps up to possibly about 200F, you’d = want an epoxy good to 250F+. My configuration for the 20B was a bit = complex, and I wanted it to carry the fairly heavy 3-barrel TWM throttle body so = I decided to go to aluminum. I had a very skilled welder, and still = it was a considerable challenge for him.

No reason why composite = won’t work if done right.

Al

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Christopher Barber
Sent: Friday, July 22, 2005 10:12 = PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: fiberglass runners

I have seen some = postings over the few years I have been on this list regarding making fiberglass = runners for an intake manifold, however, I am unsure if anyone has actually made = any and if not why not. If I understand it correctly they are paths = for air and would not require any "structural strength, just need to be = resistant to the heat in the area they are placed and direct the air properly. = If this is true, and please correct me where I am wrong, why would fiberglass = runners not work. Is it that there are not that many composite guys on the = list (just Mr. Slade and myself?) and as a result are resistant or not = skilled in working with fiberglass. Seems they would be light, easy to form = and get into tighter places and do the job well. However, I am not an = engineer and am concerned about obvious stuff I could easily miss. I am not skilled with any welding (even though my build partner, David Staten, just bought a welder for us to learn with) so like the idea of = having alternatives.

I am in the = final stages of my Velocity airframe construction (now in the micro, sand = repeat stage) and feel VERY confident in my abilities with fiberglass. = What obvious stuff am I missing regarding using high temp epoxy to = make well formed runners out of fiberglass. Y'alls input/insight is greatly appreciated. TIA.

All the = best,

Chris = Barber

Houston, = GSOT

LoneStarVelocity.= com

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