Return-Path: Received: from fed1rmmtao10.cox.net ([68.230.241.29] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 525677 for flyrotary@lancaironline.net; Wed, 10 Nov 2004 01:13:47 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.29; envelope-from=ALVentures@cox.net Received: from BigAl ([68.107.116.221]) by fed1rmmtao10.cox.net (InterMail vM.6.01.04.00 201-2131-117-20041022) with ESMTP id <20041110061317.DKTP18545.fed1rmmtao10.cox.net@BigAl> for ; Wed, 10 Nov 2004 01:13:17 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: EWP Date: Tue, 9 Nov 2004 22:13:18 -0800 Message-ID: <000001c4c6ec$5fa44880$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C4C6A9.51810880" 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_01C4C6A9.51810880 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Subject: [FlyRotary] Re: EWP =20 Al,=20 Good data, but for clarification, aren't you running a 13B pump on your = 20B? Are you running stock main pulley or an undersized pulley? The 20B pump should flow more gpm due to a slightly larger impeller. Also, comparing = a 20B eccentric pulley with a 13B from an 89 n/a engine, the 20B pulley is larger, which should also increase flow, up to the point of cavitation. Mark S. Mark; =20 Yes, I have a 13B pump housing; I'm not sure what impeller. All I know = is Dave Atkins billed it as "high performance". The pump pulley and the e-shaft pulley are the same size, which I believe is 11 - 12 cm. I = can't confirm right now because I'd have to take the cowl off to check. =20 Al =20 ------=_NextPart_000_0001_01C4C6A9.51810880 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Subject: [FlyRotary] Re: EWP

Al,
Good data, but for clarification, aren't you running a 13B pump on your 20B? Are you running stock main pulley or an undersized = pulley? The 20B pump should flow more gpm due to a slightly larger impeller. = Also, comparing a 20B eccentric pulley with a 13B from an 89 n/a engine, the = 20B pulley is larger, which should also increase flow, up to the point of cavitation.

Mark S.

Mark;

Yes, I have a 13B pump housing; = I’m not sure what impeller. All I know is Dave Atkins billed it as = “high performance”. The pump pulley and the e-shaft pulley are the = same size, which I believe is 11 - 12 cm. I can’t confirm right = now because I’d have to take the cowl off to check.

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