Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Wed, 30 Apr 2003 07:26:53 -0400 Message-ID: X-Original-Return-Path: Received: from [199.185.220.222] (HELO priv-edtnes12-hme0.telusplanet.net) by logan.com (CommuniGate Pro SMTP 4.1b4) with ESMTP id 2152318 for flyrotary@lancaironline.net; Tue, 29 Apr 2003 23:19:37 -0400 Received: from Endurance ([209.52.209.104]) by priv-edtnes12-hme0.telusplanet.net (InterMail vM.5.01.05.17 201-253-122-126-117-20021021) with SMTP id <20030430031934.DASP2199.priv-edtnes12-hme0.telusplanet.net@Endurance> for ; Tue, 29 Apr 2003 21:19:34 -0600 From: "Haywire" X-Original-To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Turbo info X-Original-Date: Tue, 29 Apr 2003 20:19:22 -0700 X-Original-Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C30E8C.9F558C60" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C30E8C.9F558C60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi Bill; When I first looked at my wastegate I was shocked at how small it was. I remembered Rusty previously commenting on this as well, as he had mentioned discussion of it on the RX-7 forum. /so I joined the forum at www.rx7club.com/forum/ to gain access to the archives. There I found alot of info on the problem of boost creep on the earlier turbochargers. I used some toolmakers ink (paint would work just as well) to spray on the closed wastegate, then opened it and the outline of the gate was clear. I then used a die grinder to open up to within 1/32 of this line. I also ported the inside of this passage to open up as large as possible and provide a smoother flow path. Control is something I am dealing with now. I've bought 2 books on turbocharging, which I'm currently reading before making any decisions. I'm just finishing the first book - "Turbochargers" by Hugh MacInnes. It was well recomended, however while it is enlightning, it is also raising more questions than it answers. It is also dated back to 1984 so it isn't exactly current info. Second book I've yet to get into is "Maximum Boost" by Corky Bell. It is dated 1997, so is much more current and at a glance seems much more detailed. Currently my thinking is to go with an absolute pressure actuator with a 15 psi spring, for wastegate control to SL. However an initial Google search has not turned up a source. I really want to limit my boost to normalization only, as the RV-9 doesn't require any additional ponys, but as I choose the "9" for mountain flying on short strips, I want to ensure that it gets all the ponys that it's rated for working at all times. When I know more I will post it. Been real busy latly, but I'd better get at it if want to claim first rotary RV-9 to fly as I see that Bernie Kerr is getting close as well. S. Todd Bartrim Turbo 13B RV-9Endurance C-FSTB http://www3.telus.net/haywire/RV-9/C-FSTB.htm "Whatever you vividly imagine, Ardently desire, Sincerly believe in, Enthusiastically act upon, Must inevitably come to pass". ------=_NextPart_000_0007_01C30E8C.9F558C60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi = Bill;

When I first=20 looked at my wastegate I was shocked at how small it was. I remembered = Rusty=20 previously commenting on this as well, as he had mentioned discussion of = it on=20 the RX-7 forum. /so I joined the forum at www.rx7club.com/forum/ to = gain access=20 to the archives. There I found alot of info on the problem of boost = creep on the=20 earlier turbochargers.

=20 I used some toolmakers ink (paint would work = just as=20 well) to spray on the closed wastegate, then opened it and the outline = of the=20 gate was clear. I then used a die grinder to open up to within 1/32 of = this=20 line. I also ported the inside of this passage to open up as large as = possible=20 and provide a smoother flow path.

Control is something I am dealing with now. = I've=20 bought 2 books on turbocharging, which I'm currently reading before = making any=20 decisions. I'm just finishing the first book - "Turbochargers" by Hugh = MacInnes.=20 It was well recomended, however while it is enlightning, it is also = raising more=20 questions than it answers. It is also dated back to 1984 so it isn't = exactly=20 current info. Second book I've yet to get into is "Maximum Boost" = by Corky=20 Bell. It is dated 1997, so is much more current and at a glance seems = much more=20 detailed.

=20 Currently my thinking is to go with an = absolute pressure=20 actuator with a 15 psi spring, for wastegate control to SL. However an = initial=20 Google search has not turned up a source. I really want to limit my = boost=20 to normalization only, as the RV-9 doesn't require any additional ponys, = but as=20 I choose the "9" for mountain flying on short strips, I want to ensure = that it=20 gets all the ponys that it's rated for working at all=20 times.

=20 When I know more I will post it.=20

Been real busy latly, but I'd better get at it if want to claim = first=20 rotary RV-9 to fly as I see that Bernie Kerr is getting close as=20 well.

S. Todd Bartrim
Turbo 13B = RV-9Endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm

= =20 "Whatever you vividly imagine, Ardently desire, Sincerly believe in,=20 Enthusiastically act upon, Must inevitably come to pass".=20

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