Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2b3) with ESMTP id 84290 for flyrotary@lancaironline.net; Sat, 22 May 2004 10:55:39 -0400 Received: from EDWARD (clt25-78-058.carolina.rr.com [24.25.78.58]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i4MEsaVw009442 for ; Sat, 22 May 2004 10:54:37 -0400 (EDT) Message-ID: <002001c4400c$b6274a70$2402a8c0@EDWARD> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Fiberglass Help! Date: Sat, 22 May 2004 10:54:40 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01C43FEB.2ED2D510" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_001D_01C43FEB.2ED2D510 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks, Bill That seems to be consensus as the better way to avoid a heavy lay-up = and less Ugh mess {:>). I'll give it a try, certainly better than my = "old" method. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: William=20 To: Rotary motors in aircraft=20 Sent: Saturday, May 22, 2004 10:30 AM Subject: [FlyRotary] Re: Fiberglass Help! You probably only need 2-3 layers of BID, buy it as sheet,=20 The technique I use to avoid too heavy a layup is: Buy some 2 mil plastic material, cut out a sheet twice the size of = your layup, fold in half, mark the shape of what you want the finished = piece to look like with felt tip marker, weigh the plastic, turn the = plastic over, lay down number of plies of BID desired, fold the plastic = over the bid (make a sandwich of plastic, cloth, plastic) weigh the = plastic/cloth combo, subtract the weight of plastic to get the weight of = cloth, mix an equal weight of epoxy and pour onto cloth. Lower the = plastic back into place, and squeegee / roll the sandwich until you can = see the marker through the sandwich. squeegee out the excess epoxy and = then cut with a rotary wheel cutter on the lines. Now you can peel off = ONE side of the plastic, carry it to your tape covered foam piece, = position it, and peel off the other side. Apply sheet peel-ply and = brush it down using a hair dryer to remove excess epoxy and let cure. Bill Schertz KIS Cruiser # 4045 ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Saturday, May 22, 2004 8:51 AM Subject: [FlyRotary] Fiberglass Help! Ok, you fiberglass types. I need some guidance. I can (and have) = slapped resin on glass cloth and obtained a functional (if heavy) item. = However, I am about to start work on my new radiator ducts and I would = like to do better. My ducts will be approx. 4"x4" at the inlet and = approx. 9"x10" at the core. There might be as much as 1 psi pressure on = the walls (if I should ever be so lucky to go that fast).=20 There a some semi compound curves at the corners of the duct as it = slopes inward from the top and bottom from the core to the inlet. =20 I need your recommendation about the weight and weave of the cloth. = I have previously used the cloth tape as it was easy to manage, but it = required several layers and it is a bit heavy. Like I said functional = but not pretty nor light. I would like your guidance on how best to apply the sheet to the = mold. In the past, I basically wrap the foam mold in duct tape and the = lay resin on it followed by raps of the cloth tape and more resine. I = am told that using sheet rather than the tape and first laying it out on = aluminum foil to wet it and then cut it in sizes say to fit a side of = the 4 side foam mold with a bit for overlap with the adjacent sides was = one way to go. Any suggestions would be appreciated. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ------=_NextPart_000_001D_01C43FEB.2ED2D510 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks, Bill
    That seems to be = consensus as=20 the better way to avoid a heavy lay-up and less Ugh mess {:>).  = I'll=20 give it a try, certainly better than my "old" method.
 
Ed
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 William=20
Sent: Saturday, May 22, 2004 = 10:30=20 AM
Subject: [FlyRotary] Re: = Fiberglass=20 Help!

You probably only need 2-3 layers of = BID, buy it=20 as sheet,
 
The technique I use to avoid too = heavy a layup=20 is:
Buy some 2 mil plastic material, cut = out a sheet=20 twice the size of your layup, fold in half, mark the shape of what you = want=20 the finished piece to look like with felt tip marker, weigh the = plastic, turn=20 the plastic over, lay down number of plies of BID desired, fold the = plastic=20 over the bid (make a sandwich of plastic, cloth, plastic) weigh = the=20 plastic/cloth combo, subtract the weight of plastic to get the weight = of=20 cloth, mix an equal weight of epoxy and pour onto cloth. Lower the = plastic=20 back into place, and squeegee / roll the sandwich until you can see = the marker=20 through the sandwich. squeegee out the excess epoxy and then cut with = a rotary=20 wheel cutter on the lines.  Now you can peel off ONE side of the = plastic,=20 carry it to your tape covered foam piece, position it, and peel off = the other=20 side.  Apply sheet peel-ply and brush it down using a hair dryer = to=20 remove excess epoxy and let cure.
Bill Schertz
KIS Cruiser # 4045
----- Original Message -----
From:=20 Ed Anderson
To: Rotary motors in = aircraft=20
Sent: Saturday, May 22, 2004 = 8:51=20 AM
Subject: [FlyRotary] = Fiberglass=20 Help!

Ok, you fiberglass types.  I = need some=20 guidance. I can (and have) slapped resin on glass cloth=20 and obtained a functional (if heavy) item.  However, I am = about to=20 start work on my new radiator ducts and I would like to=20 do better.  My ducts will be approx. 4"x4" at the inlet = and=20 approx. 9"x10" at the core.  There might be as much as 1 psi = pressure=20 on the walls (if I should ever be so lucky to go that fast). =
 
There a some semi compound curves = at the=20 corners of the duct as it slopes inward from the top and bottom from = the=20 core to the inlet. 
 
I need your recommendation about = the weight and=20 weave of the cloth.  I have previously used the cloth tape as = it was=20 easy to manage, but it required several layers and it is a bit = heavy. =20 Like I said functional but not pretty nor light.
 
I would like your guidance on how = best to apply=20 the sheet to the mold. In the past, I basically wrap the foam = mold in=20 duct tape and the lay resin on it followed by raps of the cloth tape = and=20 more resine.  I am told that using sheet rather than the tape = and first=20 laying it out on aluminum foil to wet it and then cut it in sizes = say to fit=20 a side of the 4 side foam mold with a bit for overlap with the = adjacent=20 sides was one way to go.
 
Any suggestions would be=20 appreciated.
 
Ed
 
 
Ed Anderson
RV-6A N494BW Rotary=20 Powered
Matthews, = NC
------=_NextPart_000_001D_01C43FEB.2ED2D510--