Return-Path: Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2577920 for flyrotary@lancaironline.net; Sat, 13 Sep 2003 01:24:57 -0400 Received: from TOSHIBAjhr ([209.214.14.176]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with SMTP id <20030913052455.BUCI17943.imf17aec.mail.bellsouth.net@TOSHIBAjhr> for ; Sat, 13 Sep 2003 01:24:55 -0400 From: "John Slade" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: turbo wastegate requirements Date: Sat, 13 Sep 2003 01:24:54 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01C37995.D6156440" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 In-reply-to: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C37995.D6156440 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit > I really wish I knew how much boost the 9.7 rotors would tolerate. If 6 psi is safe, then I'd be tempted to just set the relief valve there, and try to adjust the throttle for 5 psi. I just asked my engine guy (Japtrix) this question. He feels that the engine (9.7 rotors) will be fully protected with a 6psi popoff valve and the stock wastegate. He seems to think that manual wastegate control is unnecessary. He once drove an RX7 up a 12,000ft mountain in Peru. As they neared the top he felt the boost drop off. It came back as they came back down the other side. For what it's worth. John Slade ------=_NextPart_000_0006_01C37995.D6156440 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
 > I = really wish I=20 knew how much boost the 9.7 rotors would tolerate.  If 6 psi is = safe, then=20 I'd be tempted to just set the relief valve there, and try to adjust the = throttle for 5 psi.   
I just asked my engine guy (Japtrix) this = question. He=20 feels that the engine (9.7 rotors) will be fully protected with a 6psi = popoff=20 valve and the stock wastegate.  He seems to think that manual=20 wastegate control is unnecessary. He once drove an RX7 up a 12,000ft = mountain in=20 Peru. As they neared the top he felt the boost drop off. It came back as = they=20 came back down the other side.
For what it's worth.
John=20 Slade
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