Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.93.67.84] verified) by logan.com (CommuniGate Pro SMTP 4.1) with ESMTP id 2510864 for flyrotary@lancaironline.net; Mon, 04 Aug 2003 08:18:09 -0400 Received: from o7y6b5 (clt78-221.carolina.rr.com [24.93.78.221]) by ms-smtp-03.southeast.rr.com (8.12.5/8.12.2) with SMTP id h74CGB3N020319 for ; Mon, 4 Aug 2003 08:16:11 -0400 (EDT) Message-ID: <002201c35a83$aa827d80$1702a8c0@WorkGroup> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Tachs other stuff Date: Mon, 4 Aug 2003 08:26:44 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01C35A62.2347AAA0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_001F_01C35A62.2347AAA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message ----- Original Message -----=20 From: Haywire=20 To: Rotary motors in aircraft=20 Sent: Monday, August 04, 2003 4:36 AM Subject: [FlyRotary] Tachs other stuff Hi Rusty & All; SNIP . What should I expect for a static RPM with a 76" 3 blade prop set = at approx. mid range (60"). I can get 5000 RPM with about 2-3psi boost. = This is not quite full throttle, but I don't really want to boost much = at this altitude as I'm running the 9.4:1 rotors. Also the plane starts = dragging at this, so I don't really want to push it any harder. Reading = the archives I find Ed reports a static of 5200-5400 RPM, but that's a 2 = blade ( ? X ? ). Tommy reported 4350 RPM with a 3 blade ( ? X 60) = @30"MAP. 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, Sincerely believe = in, Enthusiastically act upon, Must inevitably come to pass".=20 Todd, my prop is a 68x72 two blade if that helps. Tracy Crook has = the same prop and gets static rpm in the same range as I do 5200-5400 = rpm Ed Anderson ------=_NextPart_000_001F_01C35A62.2347AAA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
 
----- Original Message -----
From:=20 Haywire
Sent: Monday, August 04, 2003 = 4:36=20 AM
Subject: [FlyRotary] Tachs = other=20 stuff

Hi=20 Rusty & All;
  SNIP
 
.
    What should I expect for a static RPM with = a 76" 3=20 blade prop set at approx. mid range (60"). I can get 5000 RPM with = about=20 2-3psi boost. This is not quite full throttle, but I don't really want = to=20 boost much at this altitude as I'm running the 9.4:1 rotors. Also the = plane=20 starts dragging at this, so I don't really want to push it any harder. = Reading=20 the archives I find Ed reports a static of 5200-5400 RPM, but that's a = 2 blade=20 ( ? X ? ). Tommy reported 4350 RPM with a 3 blade ( ? X 60)=20 @30"MAP.

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, Sincerely believe in,=20 Enthusiastically act upon, Must inevitably come to pass".

Todd, my prop is a 68x72 two blade = if that=20 helps.  Tracy Crook has the same prop and gets static rpm in = the same=20 range as I do 5200-5400 rpm
 
Ed=20 Anderson
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